This document summarizes a study that used computational fluid dynamics (CFD) analysis to evaluate heat transfer performance in a tube with twisted tape inserts using different working fluids. The CFD simulations modeled fluid flow and heat transfer in the tube domain using water as the base fluid and then two types of nanofluids (Al2O3/water and CuO/water) at various volume fractions and inlet velocities. Key results found that the Al2O3/water nanofluid provided the best heat transfer enhancement compared to the other fluids, with up to a 43.7% increase in heat transfer over water. The study demonstrates the effectiveness of nanofluids for improving heat transfer characteristics in pipes.
IRJET- Thermal Analysis of Corrugated Plate Heat Exchanger by using Ansys...IRJET Journal
This document discusses thermal analysis of a corrugated plate heat exchanger using ANSYS software through finite element analysis. It summarizes previous research on using nanofluids like Al2O3 in water to improve heat transfer in these types of heat exchangers. The document then outlines the methodology that will be used, which involves studying the corrugated plate heat exchanger with counterflow configuration and varying parameters like volume flow rate and corrugation angle to determine the optimal heat transfer results.
SPEECH EMOTION RECOGNITION SYSTEM USING RNNIRJET Journal
1. The document discusses using computational fluid dynamics (CFD) to analyze heat transfer in a tube-in-tube helical coil heat exchanger with different nanofluid materials.
2. Simulations were run with Al2O3/water and CuO/water nanofluids at various inlet velocities to analyze parameters like temperature, pressure drop, and heat transfer coefficient.
3. The results showed that using Al2O3/water nanofluids improved heat transfer compared to using water alone, while CuO/water nanofluids decreased heat transfer. Higher inlet velocities also improved heat transfer due to increased turbulence.
Experimental Study of Heat Transfer Enhancement in Triple Tube Heat Exchanger...IRJET Journal
The document describes an experimental study of heat transfer enhancement in a triple tube heat exchanger using CuO and Al2O3 nanofluids. A triple tube heat exchanger was tested with hot water flowing through the intermediate tube and cold water flowing through the inner and outer tubes. Nanofluids of CuO and Al2O3 with a 0.033% volumetric concentration were used. The heat transfer rate and effectiveness of the triple tube heat exchanger were evaluated experimentally for different flow rates of the hot fluid, with the cold fluid flow rate held constant. The results showed that use of nanofluids increased the heat transfer rate and effectiveness compared to using plain water as the working fluid.
IRJET- Heat Exchanger based on Nano FluidIRJET Journal
The document discusses using nanofluids to improve heat transfer in a heat exchanger. It begins by introducing nanofluids and their potential to increase heat transfer rates compared to conventional fluids. It then describes the experimental setup to test a heat exchanger using water and metal-based nanofluids. Temperature sensors will measure the inlet and outlet temperatures of the two fluids while flow control valves regulate flow rates. The goal is to study the effect of mass flow rates on heat exchanger efficiency. CAD software was used to model the design. Experimental testing will obtain results and conclusions on the heat exchanger's performance using nanofluids versus just water.
CFD Investigation of Compact Heat Exchanger Having Different Fins with Nanofl...IRJET Journal
This document summarizes research on using computational fluid dynamics (CFD) to investigate heat transfer in a compact heat exchanger with different fin types and titanium dioxide nanofluid. It discusses past research on various techniques for enhancing heat transfer and reducing pressure losses in heat exchangers. The document then outlines the objectives, methodology, and potential implications of research using CFD and limited experimental data to develop new heat transfer and pressure drop correlations for plain, offset strip, and wavy fins, which are common in applications like cryogenics and aerospace. These new correlations could provide more accurate and broadly applicable insights for heat exchanger design compared to existing correlations.
CFD Analysis for Heat Transfer Enhancement of a Corrugated Plate Heat Exchang...ijtsrd
The flow properties of heat transfer across such corrugated channels are very distinct from parallel plate channels. The primary flow direction is parallel to the waviness of the channel of the corrugated channel, although the local flow direction is still changed due to the waviness of the channel. By flow recirculation, separation and re attachment, the thermal boundary layer formed on its walls is regularly disrupted and the convective heat transfer coefficient is thus increased. In this work, in corrugated channels, the convective heat transfer and pressure drop characteristics of flow have been tested numerically. On channels of uniform heat flux and fixed corrugation over a Reynolds number spectrum, 10000 = Re = 30000, numerical research was conducted. The impacts of channel configuration, variation in Reynold’s number, and concentration variations of nanoparticles in base fluid on heat transfer are discussed. As opposed to the traditional corrugated channel, a major heat transfer gain was associated with the proposed corrugated channel. Based on the nanofluid concentration, Reynold number and channel configuration of the corrugated channel, the average Nusselt number increased by a factor of 2.2 up to 2.8 compared to that of the semi circular corrugated channel. Compared with the effect of channel configuration variation, triangular corrugated channel was the best Nusselt numbers, followed by the shape Semi circular Triangular , and Semi circular corrugated channel with the lowest results. Prof. Pushparaj Singh | Rishi Kesh Jha "CFD Analysis for Heat Transfer Enhancement of a Corrugated Plate Heat Exchanger using Different Corrugated Channel Configurations" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-6 , October 2020, URL: https://www.ijtsrd.com/papers/ijtsrd35706.pdf Paper Url: https://www.ijtsrd.com/engineering/mechanical-engineering/35706/cfd-analysis-for-heat-transfer-enhancement-of-a-corrugated-plate-heat-exchanger-using-different-corrugated-channel-configurations/prof-pushparaj-singh
IRJET- Experimental Investigation of Pipe in Pipe Tube Heat Exchanger using S...IRJET Journal
This document presents an experimental investigation of a pipe-in-pipe tube heat exchanger using silica (SiO2) nanofluid. The heat exchanger consists of an outer steel pipe and inner aluminum pipe. SiO2 nanofluid with 2% volume concentration and 100nm nanoparticle size is used and compared to water as the base fluid. Test results show that the nanofluid improves heat transfer characteristics and heat transfer coefficient compared to water. Specifically, the effectiveness of the heat exchanger increased by 23.1% when using nanofluid versus water. Varying the mass flow rate was also found to impact the heat transfer rate and effectiveness.
Computational analysis for different characteristics of the circular microcha...IRJET Journal
This document summarizes research on computational analysis of flow characteristics in circular microchannels under low Reynolds number conditions. It discusses how a variable diameter design can improve flow rate and heat dissipation from electronic chips. The document reviews several past studies on microchannel flow and heat transfer. It is found that increasing the microchannel diameter increases heat dissipation rate, with a proposed design improving flow rate and heat removal for chip cooling.
IRJET- Thermal Analysis of Corrugated Plate Heat Exchanger by using Ansys...IRJET Journal
This document discusses thermal analysis of a corrugated plate heat exchanger using ANSYS software through finite element analysis. It summarizes previous research on using nanofluids like Al2O3 in water to improve heat transfer in these types of heat exchangers. The document then outlines the methodology that will be used, which involves studying the corrugated plate heat exchanger with counterflow configuration and varying parameters like volume flow rate and corrugation angle to determine the optimal heat transfer results.
SPEECH EMOTION RECOGNITION SYSTEM USING RNNIRJET Journal
1. The document discusses using computational fluid dynamics (CFD) to analyze heat transfer in a tube-in-tube helical coil heat exchanger with different nanofluid materials.
2. Simulations were run with Al2O3/water and CuO/water nanofluids at various inlet velocities to analyze parameters like temperature, pressure drop, and heat transfer coefficient.
3. The results showed that using Al2O3/water nanofluids improved heat transfer compared to using water alone, while CuO/water nanofluids decreased heat transfer. Higher inlet velocities also improved heat transfer due to increased turbulence.
Experimental Study of Heat Transfer Enhancement in Triple Tube Heat Exchanger...IRJET Journal
The document describes an experimental study of heat transfer enhancement in a triple tube heat exchanger using CuO and Al2O3 nanofluids. A triple tube heat exchanger was tested with hot water flowing through the intermediate tube and cold water flowing through the inner and outer tubes. Nanofluids of CuO and Al2O3 with a 0.033% volumetric concentration were used. The heat transfer rate and effectiveness of the triple tube heat exchanger were evaluated experimentally for different flow rates of the hot fluid, with the cold fluid flow rate held constant. The results showed that use of nanofluids increased the heat transfer rate and effectiveness compared to using plain water as the working fluid.
IRJET- Heat Exchanger based on Nano FluidIRJET Journal
The document discusses using nanofluids to improve heat transfer in a heat exchanger. It begins by introducing nanofluids and their potential to increase heat transfer rates compared to conventional fluids. It then describes the experimental setup to test a heat exchanger using water and metal-based nanofluids. Temperature sensors will measure the inlet and outlet temperatures of the two fluids while flow control valves regulate flow rates. The goal is to study the effect of mass flow rates on heat exchanger efficiency. CAD software was used to model the design. Experimental testing will obtain results and conclusions on the heat exchanger's performance using nanofluids versus just water.
CFD Investigation of Compact Heat Exchanger Having Different Fins with Nanofl...IRJET Journal
This document summarizes research on using computational fluid dynamics (CFD) to investigate heat transfer in a compact heat exchanger with different fin types and titanium dioxide nanofluid. It discusses past research on various techniques for enhancing heat transfer and reducing pressure losses in heat exchangers. The document then outlines the objectives, methodology, and potential implications of research using CFD and limited experimental data to develop new heat transfer and pressure drop correlations for plain, offset strip, and wavy fins, which are common in applications like cryogenics and aerospace. These new correlations could provide more accurate and broadly applicable insights for heat exchanger design compared to existing correlations.
CFD Analysis for Heat Transfer Enhancement of a Corrugated Plate Heat Exchang...ijtsrd
The flow properties of heat transfer across such corrugated channels are very distinct from parallel plate channels. The primary flow direction is parallel to the waviness of the channel of the corrugated channel, although the local flow direction is still changed due to the waviness of the channel. By flow recirculation, separation and re attachment, the thermal boundary layer formed on its walls is regularly disrupted and the convective heat transfer coefficient is thus increased. In this work, in corrugated channels, the convective heat transfer and pressure drop characteristics of flow have been tested numerically. On channels of uniform heat flux and fixed corrugation over a Reynolds number spectrum, 10000 = Re = 30000, numerical research was conducted. The impacts of channel configuration, variation in Reynold’s number, and concentration variations of nanoparticles in base fluid on heat transfer are discussed. As opposed to the traditional corrugated channel, a major heat transfer gain was associated with the proposed corrugated channel. Based on the nanofluid concentration, Reynold number and channel configuration of the corrugated channel, the average Nusselt number increased by a factor of 2.2 up to 2.8 compared to that of the semi circular corrugated channel. Compared with the effect of channel configuration variation, triangular corrugated channel was the best Nusselt numbers, followed by the shape Semi circular Triangular , and Semi circular corrugated channel with the lowest results. Prof. Pushparaj Singh | Rishi Kesh Jha "CFD Analysis for Heat Transfer Enhancement of a Corrugated Plate Heat Exchanger using Different Corrugated Channel Configurations" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-6 , October 2020, URL: https://www.ijtsrd.com/papers/ijtsrd35706.pdf Paper Url: https://www.ijtsrd.com/engineering/mechanical-engineering/35706/cfd-analysis-for-heat-transfer-enhancement-of-a-corrugated-plate-heat-exchanger-using-different-corrugated-channel-configurations/prof-pushparaj-singh
IRJET- Experimental Investigation of Pipe in Pipe Tube Heat Exchanger using S...IRJET Journal
This document presents an experimental investigation of a pipe-in-pipe tube heat exchanger using silica (SiO2) nanofluid. The heat exchanger consists of an outer steel pipe and inner aluminum pipe. SiO2 nanofluid with 2% volume concentration and 100nm nanoparticle size is used and compared to water as the base fluid. Test results show that the nanofluid improves heat transfer characteristics and heat transfer coefficient compared to water. Specifically, the effectiveness of the heat exchanger increased by 23.1% when using nanofluid versus water. Varying the mass flow rate was also found to impact the heat transfer rate and effectiveness.
Computational analysis for different characteristics of the circular microcha...IRJET Journal
This document summarizes research on computational analysis of flow characteristics in circular microchannels under low Reynolds number conditions. It discusses how a variable diameter design can improve flow rate and heat dissipation from electronic chips. The document reviews several past studies on microchannel flow and heat transfer. It is found that increasing the microchannel diameter increases heat dissipation rate, with a proposed design improving flow rate and heat removal for chip cooling.
Numerical and CFD Analysis of Heat Transfer Enhancement Technique in Shell an...IRJET Journal
This document reviews computational fluid dynamics (CFD) modeling of heat transfer enhancement techniques in shell and tube heat exchangers using nanofluids. It begins with an introduction of heat exchangers, nanofluids, and CFD modeling. The review then examines literature on applications of nanofluids in various heat exchangers and effects on heat transfer and fluid flow characteristics. Key findings include nanofluids increasing heat transfer rates but also increasing viscosity. The review discusses challenges with CFD modeling of nanofluids and potential solutions. It aims to synthesize research to identify knowledge gaps and guide future work on analyzing heat exchangers with nanofluids.
Enhancing Heat Transfer Efficiency: Nanofluid Integration in Diverse Systems ...IRJET Journal
This document discusses research on enhancing heat transfer efficiency through the integration of nanofluids in various systems and coiled heat exchangers. It investigates the effects of nanofluids on cooling towers, car radiators, refrigeration systems, and shell and helical coiled tube heat exchangers. The study models a double helix coiled tube heat exchanger using computational fluid dynamics and compares its performance when water and nanofluids are used. Nanofluids with 0.75% volume fraction and added surfactants for stability are tested. The results are analyzed based on heat transfer rate, effectiveness, and other thermal properties to evaluate the potential advantages of using hybrid nanofluids in coiled heat exchangers
IRJET- A Review on Improvement of Heat Transfer Rate by Passive MethodsIRJET Journal
This document reviews research on improving heat transfer rates through passive methods. It discusses how adding nanoparticles to fluids to create nanofluids can improve heat transfer efficiency in heat exchangers. Several studies are summarized that found adding metal oxide nanoparticles like CuO and Al2O3 to water and ethylene glycol increased heat transfer rates compared to the base fluids alone. Corrugated plate heat exchangers in particular saw higher effectiveness with nanofluid use. However, more research is still needed to determine optimum nanoparticle concentrations for different nanofluids and applications. The aim of this review is to analyze how lower concentrations of Al2O3/water nanofluid could impact performance in plate heat exchangers.
Computational Fluid Dynamic Analysis for Optimization of Helical Coil Heat Ex...IRJET Journal
This document analyzes computational fluid dynamic (CFD) optimization of a helical coil heat exchanger. It compares CFD analysis results to experimental results and finds that decreasing the pitch length of the helical coil and relative velocity of fluids increases heat transfer rate. The document also describes an experimental setup used to study a helical coil heat exchanger and discusses previous research analyzing factors that affect heat transfer in helical coil exchangers, such as pitch length, tube diameter, and fluid velocity.
CFD investigation on heat transfer enhancement in shell and tube heat exchang...IRJET Journal
The document discusses a computational fluid dynamics (CFD) investigation of heat transfer enhancement in a shell and tube heat exchanger using graphene oxide (GO) nanofluid. A 3D model of a shell and tube heat exchanger is developed and GO nanofluid is introduced. Governing equations are solved numerically to analyze heat transfer performance. Results show that incorporating GO nanofluid leads to enhanced heat transfer compared to traditional fluids due to GO's higher thermal conductivity and its ability to disrupt thermal boundary layers and promote mixing. Heat transfer rate increased 42% and convective heat transfer coefficient increased 62% with GO nanofluid. This suggests GO nanofluid can significantly improve heat exchanger efficiency for applications like power plants and HVAC systems. Further
IRJET- Double Pipe Heat Exchanger with Spiral FlowIRJET Journal
This document summarizes research on heat exchangers with parallel and counter flow configurations. It discusses how performance varies based on fluid properties and operating conditions. The document also outlines the experimental setup and procedure used to study a double pipe heat exchanger with a spiral inner tube. Tests were conducted with both parallel and counter flow arrangements to compare performance under different flow rates and inlet temperatures. Key findings from previous research on factors affecting heat transfer coefficients and effectiveness are also summarized.
IRJET- Experimental Investigation on the Performance of V.C.R. System using R...IRJET Journal
The document describes an experimental investigation of the performance of a vapor compression refrigeration system using different diameter capillary tubes. The study compares the refrigeration performance under different load conditions for capillary tubes of varying diameters. Specifically, it measures the effect on coefficient of performance and mass flow rate of the refrigerant. The experimental setup uses a domestic refrigerator with modifications to allow connection of different test capillary tubes between the evaporator inlet and compressor suction ports. Parameters like temperature, pressure, and system performance are measured for each capillary tube diameter under varying heat loads. The results are used to determine the optimal capillary tube size for maximum efficiency.
IRJET- Study of Flow and Heat Transfer Analysis in Shell and Tube Heat Exchan...IRJET Journal
This document discusses a study of flow and heat transfer analysis in a shell and tube heat exchanger using computational fluid dynamics (CFD). An experimental shell and tube heat exchanger was fabricated and tested, then modeled and analyzed using CFD software. The experimental results were found to correlate well with negligible error compared to the CFD analysis. Simulating the heat exchanger digitally using CFD provided insights into temperature distribution, pressure drop, and fluid flow patterns to optimize heat transfer performance.
Study of Flow and Heat Transfer Analysis in Shell and Tube Heat Exchanger usi...SuginElankaviR
Heat exchangers are used to transfer heat from fluid at high temperature to fluid at lower temperature. Heat exchangers are used in industrial purposes in chemical industries, nuclear power plants, refineries, food processing, etc. Sizing of heat exchangers plays very significant role for cost optimization. Also, efficiency and effectiveness of heat exchangers is an important parameter while selection of industrial heat exchangers. Methods for improvement on heat transfer have been worked upon for many years in order to obtain high efficiency with optimum cost. In this research work, design of shell & tube heat exchanger with single segmented baffles and analyze the flow and temperature field inside the shell using Autodesk Simulation CFD 2015. When comparing the CFD analysis with experimental results, it was well correlation with negligible percentage of error. Thus, the series of baffles results in a significant increase in heat transfer coefficient per unit pressure drop in the heat exchanger.
IRJET - Analysis of Solar Flat Plate Collector using Heat Transfer Enhancer A...IRJET Journal
This document analyzes the performance of a solar flat plate collector with an absorber tube containing a heat transfer enhancer. Two types of heat transfer enhancers are tested - rectangular and square designs. The rectangular enhancer provides higher efficiency than the square design by increasing the convective heat transfer coefficient with minimal increase in pumping power. A theoretical model is developed and validated against experimental results from other studies. Analysis shows that the rectangular enhancer generates less entropy and exergy destruction than the square enhancer or plain tube. It also provides higher thermal efficiency, as it increases the surface area in contact with the absorbing fluid flow.
A REPORT ON HEAT TRANSFER OPTIMIZATION OFSHELL AND TUBE HEAT EXCHANGER USING ...IRJET Journal
The document presents a study on optimizing heat transfer in a shell and tube heat exchanger using different fluids through computational fluid dynamics (CFD) analysis. A shell and tube heat exchanger model was created in CATIA software and CFD analysis was performed in Solidworks Flow Simulation. Water and two types of nanofluids (SiO2 and Al2O3 nanoparticles mixed with water) were analyzed as fluids flowing through the heat exchanger tubes at varying velocities from 0.2 m/s to 1 m/s. The results found that increasing fluid velocity improved heat transfer effectiveness and overall heat transfer while decreasing friction factor. Heat transfer performance was highest for the nanofluids compared to water alone.
IRJET- Design and Computational Analysis of Shell and Tube Heat Exchanger Con...IRJET Journal
This document describes a computational fluid dynamics (CFD) analysis of a shell and tube heat exchanger considering various parameters. The analysis models and simulates the geometry of a shell and tube heat exchanger using ANSYS to study the temperature and pressure fields inside the shell. Variables analyzed include mass flow rate, baffle inclination angle, outlet temperature, and pressure drop. The results show increased heat exchanger performance with a helical baffle design compared to a conventional segmental baffle design.
Analysis of Heat Transfer in Spiral Plate Heat Exchanger Using Experimental a...ijsrd.com
Heat transfer is the key to several processes in industrial application. In a present days maximum efficient heat transfer equipment are in demand due to increasing energy cost. For achieving maximum heat transfer, the engineers are continuously upgrading their knowledge and skills by their past experience. Present work is a skip in the direction of demonstrating the use of the computational technique as a tool to substitute experimental techniques. For this purpose an experimental set up has been designed and developed. Analysis of heat transfer in spiral plate heat exchanger is performed and same Analysis of heat transfer in spiral plate heat exchanger can be done by commercially procurable computational fluid dynamic (CFD) using ANSYS CFX and validated based on this forecasting. Analysis has been carried out in parallel and counter flow with inward and outward direction for achieving maximum possible heat transfer. In this problem of heat transfer involved the condition where Reynolds number again and again varies as the fluid traverses inside the section of flow from inlet to exit, mass flow rate of working fluid is been modified with time. By more and more analysis and experimentation and systematic data degradation leads to the conclusion that the maximum heat transfer rates is obtained in case of the inward parallel flow configuration compared to all other counterparts, which observed to vary with small difference in each section. Furthermore, for the increase heat transfer rate in spiral plate heat exchanger is obtain by cascading system.
ANALYSIS OF HEAT TRANSFER CHARACTERISTICS IN CROSS FLOW PLATE FIN TYPE HEAT E...IRJET Journal
This document summarizes an analysis of heat transfer characteristics in a cross-flow plate fin heat exchanger using non-Newtonian fluids. The study used a cross-flow plate fin heat exchanger constructed of aluminum with corrugated fins to transfer heat between hot water and cold fluids of varying concentrations of carboxy methyl cellulose (CMC). Experiments were conducted at different flow rates and CMC concentrations to determine parameters such as heat transfer coefficients, effectiveness, and heat transfer performance. Results showed that increasing CMC concentration and flow rate affected these parameters.
Critical heat flux enhancement in pool boiling with al2 o3 water nanofluideSAT Journals
Abstract Boiling is an important phase change phenomena as it plays a crucial role in the design of high heat flux system like boilers, heat exchangers, microscopic heat transfer devices. However boiling phenomenon is limited by critical heat flux. At critical heat flux material of heated surface suffers physical damage due to lower heat transfer resulting from thin film formed over the surface. Now a days Nanofluid which is colloidal suspension of nanoparticle in base fluid is highlighted as innovative techniques to enhance critical heat flux. In the present study Al2O3 nanoparticles were characterized by using SEM and XRD analysis. From SEM images it was seen that nanoparticle has spherical morphology, and from XRD analysis average nanoparticle size determined was 29.48 nm. Five different nanofluids of concentration range from 3 gram/liter to 15 gram/liter were prepared. Critical heat flux (CHF) of each Al2O3-water nanofluid in pool boiling is determined on NiCr wire of SWG 28. The minimum critical heat flux enhancement is 30.53% at 3 gram/liter nanofluid compared to critical heat flux of distilled water. The highest critical heat flux enhancement is 72.70 % at 12 gram/liter nanofluid. Critical heat flux of nanofluid increases with increase in concentration of Al2O3 nanoparticle in distilled water up to 12 gram/liter nanofluid. Surface roughness of bare wire was 0.126 μm. Surface roughness of wire sample used in pool boiling of 3 gram/liter nanofluid is 0.299μm and highest surface roughness was 0.715 μm of heater used in pool boiling of 12 gram/liter nanofluid. The Surface roughness measurement results show the evidence of nanoparticle deposition on wire surface and its effect on Critical Heat Flux enhancement. Keywords: Critical heat flux, Nanoparticle, Nanofluid, Concentration, Surface roughness.
IRJET-Numerical Investigation of Heat Performance Enhancement for a Double-Pi...IRJET Journal
This document presents a numerical investigation of heat transfer enhancement in a double-pipe heat exchanger with continuous helical baffles in the annulus and either water or alumina nanofluid as the working fluid. The study varies baffle spacing, mass flow rate, and nanofluid concentration to analyze their effects on heat transfer rate, pressure drop, and thermal performance. Results show that adding helical baffles increases the fluid flow path and turbulence, enhancing heat transfer. Replacing water with nanofluid further improves heat transfer while also increasing pressure drop. Graphs comparing the different configurations are presented and agree with previous research findings. The goal is to optimize baffle design and nanofluid parameters to maximize heat transfer rate and performance for practical
IRJET- A Review on Basics of Heat ExchangerIRJET Journal
This document reviews the basics of heat exchangers. It discusses that heat exchangers are used to transfer heat between two or more fluids for heating and cooling processes. The three main types of heat exchangers are shell and tube, plate, and double pipe heat exchangers. It also discusses computational fluid dynamics as a method to analyze fluid flow and heat transfer in heat exchangers numerically. The document then reviews the basic design methods for two fluid heat exchangers, including the log-mean temperature difference method, effectiveness-NTU method, and other graphical methods.
This document summarizes an experimental study on enhancing heat transfer in a corrugated plate heat exchanger by adding aluminum oxide (Al2O3) microparticles to water. The study used a 3-channel heat exchanger with sinusoidal corrugated plates at a 45 degree angle. Hot water was flowed through the central channel while water with varying concentrations of Al2O3 microparticles was flowed through the outer channels. Tested parameters included hot water inlet temperature from 40-70°C, Al2O3 volume concentration from 0-1.275%, and parallel vs counter flow configurations. Results showed adding Al2O3 microparticles increased heat exchanger effectiveness substantially, with counter flow seeing up to 0.96 effectiveness
Experimental Investigation of Brazed Plate Heat Exchanger for Small Temperatu...IRJET Journal
1) The document presents an experimental investigation of a brazed plate heat exchanger (BPHE) for applications requiring a small temperature difference between hot and cold fluids.
2) The experiment varies the flow rate of hot water from 2 liters/minute to 6 liters/minute while keeping the inlet temperature and flow rate of cold water constant.
3) The results show that increasing the flow rate of hot water increases the heat transfer, due to increased turbulence from the corrugated plate design at higher velocities.
International Journal of Engineering Research and Applications (IJERA) is a team of researchers not publication services or private publications running the journals for monetary benefits, we are association of scientists and academia who focus only on supporting authors who want to publish their work. The articles published in our journal can be accessed online, all the articles will be archived for real time access.
Our journal system primarily aims to bring out the research talent and the works done by sciaentists, academia, engineers, practitioners, scholars, post graduate students of engineering and science. This journal aims to cover the scientific research in a broader sense and not publishing a niche area of research facilitating researchers from various verticals to publish their papers. It is also aimed to provide a platform for the researchers to publish in a shorter of time, enabling them to continue further All articles published are freely available to scientific researchers in the Government agencies,educators and the general public. We are taking serious efforts to promote our journal across the globe in various ways, we are sure that our journal will act as a scientific platform for all researchers to publish their works online.
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...IRJET Journal
1) The document discusses the Sungal Tunnel project in Jammu and Kashmir, India, which is being constructed using the New Austrian Tunneling Method (NATM).
2) NATM involves continuous monitoring during construction to adapt to changing ground conditions, and makes extensive use of shotcrete for temporary tunnel support.
3) The methodology section outlines the systematic geotechnical design process for tunnels according to Austrian guidelines, and describes the various steps of NATM tunnel construction including initial and secondary tunnel support.
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTUREIRJET Journal
This study examines the effect of response reduction factors (R factors) on reinforced concrete (RC) framed structures through nonlinear dynamic analysis. Three RC frame models with varying heights (4, 8, and 12 stories) were analyzed in ETABS software under different R factors ranging from 1 to 5. The results showed that displacement increased as the R factor decreased, indicating less linear behavior for lower R factors. Drift also decreased proportionally with increasing R factors from 1 to 5. Shear forces in the frames decreased with higher R factors. In general, R factors of 3 to 5 produced more satisfactory performance with less displacement and drift. The displacement variations between different building heights were consistent at different R factors. This study evaluated how R factors influence
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This document reviews research on improving heat transfer rates through passive methods. It discusses how adding nanoparticles to fluids to create nanofluids can improve heat transfer efficiency in heat exchangers. Several studies are summarized that found adding metal oxide nanoparticles like CuO and Al2O3 to water and ethylene glycol increased heat transfer rates compared to the base fluids alone. Corrugated plate heat exchangers in particular saw higher effectiveness with nanofluid use. However, more research is still needed to determine optimum nanoparticle concentrations for different nanofluids and applications. The aim of this review is to analyze how lower concentrations of Al2O3/water nanofluid could impact performance in plate heat exchangers.
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This document analyzes computational fluid dynamic (CFD) optimization of a helical coil heat exchanger. It compares CFD analysis results to experimental results and finds that decreasing the pitch length of the helical coil and relative velocity of fluids increases heat transfer rate. The document also describes an experimental setup used to study a helical coil heat exchanger and discusses previous research analyzing factors that affect heat transfer in helical coil exchangers, such as pitch length, tube diameter, and fluid velocity.
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The document discusses a computational fluid dynamics (CFD) investigation of heat transfer enhancement in a shell and tube heat exchanger using graphene oxide (GO) nanofluid. A 3D model of a shell and tube heat exchanger is developed and GO nanofluid is introduced. Governing equations are solved numerically to analyze heat transfer performance. Results show that incorporating GO nanofluid leads to enhanced heat transfer compared to traditional fluids due to GO's higher thermal conductivity and its ability to disrupt thermal boundary layers and promote mixing. Heat transfer rate increased 42% and convective heat transfer coefficient increased 62% with GO nanofluid. This suggests GO nanofluid can significantly improve heat exchanger efficiency for applications like power plants and HVAC systems. Further
IRJET- Double Pipe Heat Exchanger with Spiral FlowIRJET Journal
This document summarizes research on heat exchangers with parallel and counter flow configurations. It discusses how performance varies based on fluid properties and operating conditions. The document also outlines the experimental setup and procedure used to study a double pipe heat exchanger with a spiral inner tube. Tests were conducted with both parallel and counter flow arrangements to compare performance under different flow rates and inlet temperatures. Key findings from previous research on factors affecting heat transfer coefficients and effectiveness are also summarized.
IRJET- Experimental Investigation on the Performance of V.C.R. System using R...IRJET Journal
The document describes an experimental investigation of the performance of a vapor compression refrigeration system using different diameter capillary tubes. The study compares the refrigeration performance under different load conditions for capillary tubes of varying diameters. Specifically, it measures the effect on coefficient of performance and mass flow rate of the refrigerant. The experimental setup uses a domestic refrigerator with modifications to allow connection of different test capillary tubes between the evaporator inlet and compressor suction ports. Parameters like temperature, pressure, and system performance are measured for each capillary tube diameter under varying heat loads. The results are used to determine the optimal capillary tube size for maximum efficiency.
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This document discusses a study of flow and heat transfer analysis in a shell and tube heat exchanger using computational fluid dynamics (CFD). An experimental shell and tube heat exchanger was fabricated and tested, then modeled and analyzed using CFD software. The experimental results were found to correlate well with negligible error compared to the CFD analysis. Simulating the heat exchanger digitally using CFD provided insights into temperature distribution, pressure drop, and fluid flow patterns to optimize heat transfer performance.
Study of Flow and Heat Transfer Analysis in Shell and Tube Heat Exchanger usi...SuginElankaviR
Heat exchangers are used to transfer heat from fluid at high temperature to fluid at lower temperature. Heat exchangers are used in industrial purposes in chemical industries, nuclear power plants, refineries, food processing, etc. Sizing of heat exchangers plays very significant role for cost optimization. Also, efficiency and effectiveness of heat exchangers is an important parameter while selection of industrial heat exchangers. Methods for improvement on heat transfer have been worked upon for many years in order to obtain high efficiency with optimum cost. In this research work, design of shell & tube heat exchanger with single segmented baffles and analyze the flow and temperature field inside the shell using Autodesk Simulation CFD 2015. When comparing the CFD analysis with experimental results, it was well correlation with negligible percentage of error. Thus, the series of baffles results in a significant increase in heat transfer coefficient per unit pressure drop in the heat exchanger.
IRJET - Analysis of Solar Flat Plate Collector using Heat Transfer Enhancer A...IRJET Journal
This document analyzes the performance of a solar flat plate collector with an absorber tube containing a heat transfer enhancer. Two types of heat transfer enhancers are tested - rectangular and square designs. The rectangular enhancer provides higher efficiency than the square design by increasing the convective heat transfer coefficient with minimal increase in pumping power. A theoretical model is developed and validated against experimental results from other studies. Analysis shows that the rectangular enhancer generates less entropy and exergy destruction than the square enhancer or plain tube. It also provides higher thermal efficiency, as it increases the surface area in contact with the absorbing fluid flow.
A REPORT ON HEAT TRANSFER OPTIMIZATION OFSHELL AND TUBE HEAT EXCHANGER USING ...IRJET Journal
The document presents a study on optimizing heat transfer in a shell and tube heat exchanger using different fluids through computational fluid dynamics (CFD) analysis. A shell and tube heat exchanger model was created in CATIA software and CFD analysis was performed in Solidworks Flow Simulation. Water and two types of nanofluids (SiO2 and Al2O3 nanoparticles mixed with water) were analyzed as fluids flowing through the heat exchanger tubes at varying velocities from 0.2 m/s to 1 m/s. The results found that increasing fluid velocity improved heat transfer effectiveness and overall heat transfer while decreasing friction factor. Heat transfer performance was highest for the nanofluids compared to water alone.
IRJET- Design and Computational Analysis of Shell and Tube Heat Exchanger Con...IRJET Journal
This document describes a computational fluid dynamics (CFD) analysis of a shell and tube heat exchanger considering various parameters. The analysis models and simulates the geometry of a shell and tube heat exchanger using ANSYS to study the temperature and pressure fields inside the shell. Variables analyzed include mass flow rate, baffle inclination angle, outlet temperature, and pressure drop. The results show increased heat exchanger performance with a helical baffle design compared to a conventional segmental baffle design.
Analysis of Heat Transfer in Spiral Plate Heat Exchanger Using Experimental a...ijsrd.com
Heat transfer is the key to several processes in industrial application. In a present days maximum efficient heat transfer equipment are in demand due to increasing energy cost. For achieving maximum heat transfer, the engineers are continuously upgrading their knowledge and skills by their past experience. Present work is a skip in the direction of demonstrating the use of the computational technique as a tool to substitute experimental techniques. For this purpose an experimental set up has been designed and developed. Analysis of heat transfer in spiral plate heat exchanger is performed and same Analysis of heat transfer in spiral plate heat exchanger can be done by commercially procurable computational fluid dynamic (CFD) using ANSYS CFX and validated based on this forecasting. Analysis has been carried out in parallel and counter flow with inward and outward direction for achieving maximum possible heat transfer. In this problem of heat transfer involved the condition where Reynolds number again and again varies as the fluid traverses inside the section of flow from inlet to exit, mass flow rate of working fluid is been modified with time. By more and more analysis and experimentation and systematic data degradation leads to the conclusion that the maximum heat transfer rates is obtained in case of the inward parallel flow configuration compared to all other counterparts, which observed to vary with small difference in each section. Furthermore, for the increase heat transfer rate in spiral plate heat exchanger is obtain by cascading system.
ANALYSIS OF HEAT TRANSFER CHARACTERISTICS IN CROSS FLOW PLATE FIN TYPE HEAT E...IRJET Journal
This document summarizes an analysis of heat transfer characteristics in a cross-flow plate fin heat exchanger using non-Newtonian fluids. The study used a cross-flow plate fin heat exchanger constructed of aluminum with corrugated fins to transfer heat between hot water and cold fluids of varying concentrations of carboxy methyl cellulose (CMC). Experiments were conducted at different flow rates and CMC concentrations to determine parameters such as heat transfer coefficients, effectiveness, and heat transfer performance. Results showed that increasing CMC concentration and flow rate affected these parameters.
Critical heat flux enhancement in pool boiling with al2 o3 water nanofluideSAT Journals
Abstract Boiling is an important phase change phenomena as it plays a crucial role in the design of high heat flux system like boilers, heat exchangers, microscopic heat transfer devices. However boiling phenomenon is limited by critical heat flux. At critical heat flux material of heated surface suffers physical damage due to lower heat transfer resulting from thin film formed over the surface. Now a days Nanofluid which is colloidal suspension of nanoparticle in base fluid is highlighted as innovative techniques to enhance critical heat flux. In the present study Al2O3 nanoparticles were characterized by using SEM and XRD analysis. From SEM images it was seen that nanoparticle has spherical morphology, and from XRD analysis average nanoparticle size determined was 29.48 nm. Five different nanofluids of concentration range from 3 gram/liter to 15 gram/liter were prepared. Critical heat flux (CHF) of each Al2O3-water nanofluid in pool boiling is determined on NiCr wire of SWG 28. The minimum critical heat flux enhancement is 30.53% at 3 gram/liter nanofluid compared to critical heat flux of distilled water. The highest critical heat flux enhancement is 72.70 % at 12 gram/liter nanofluid. Critical heat flux of nanofluid increases with increase in concentration of Al2O3 nanoparticle in distilled water up to 12 gram/liter nanofluid. Surface roughness of bare wire was 0.126 μm. Surface roughness of wire sample used in pool boiling of 3 gram/liter nanofluid is 0.299μm and highest surface roughness was 0.715 μm of heater used in pool boiling of 12 gram/liter nanofluid. The Surface roughness measurement results show the evidence of nanoparticle deposition on wire surface and its effect on Critical Heat Flux enhancement. Keywords: Critical heat flux, Nanoparticle, Nanofluid, Concentration, Surface roughness.
IRJET-Numerical Investigation of Heat Performance Enhancement for a Double-Pi...IRJET Journal
This document presents a numerical investigation of heat transfer enhancement in a double-pipe heat exchanger with continuous helical baffles in the annulus and either water or alumina nanofluid as the working fluid. The study varies baffle spacing, mass flow rate, and nanofluid concentration to analyze their effects on heat transfer rate, pressure drop, and thermal performance. Results show that adding helical baffles increases the fluid flow path and turbulence, enhancing heat transfer. Replacing water with nanofluid further improves heat transfer while also increasing pressure drop. Graphs comparing the different configurations are presented and agree with previous research findings. The goal is to optimize baffle design and nanofluid parameters to maximize heat transfer rate and performance for practical
IRJET- A Review on Basics of Heat ExchangerIRJET Journal
This document reviews the basics of heat exchangers. It discusses that heat exchangers are used to transfer heat between two or more fluids for heating and cooling processes. The three main types of heat exchangers are shell and tube, plate, and double pipe heat exchangers. It also discusses computational fluid dynamics as a method to analyze fluid flow and heat transfer in heat exchangers numerically. The document then reviews the basic design methods for two fluid heat exchangers, including the log-mean temperature difference method, effectiveness-NTU method, and other graphical methods.
This document summarizes an experimental study on enhancing heat transfer in a corrugated plate heat exchanger by adding aluminum oxide (Al2O3) microparticles to water. The study used a 3-channel heat exchanger with sinusoidal corrugated plates at a 45 degree angle. Hot water was flowed through the central channel while water with varying concentrations of Al2O3 microparticles was flowed through the outer channels. Tested parameters included hot water inlet temperature from 40-70°C, Al2O3 volume concentration from 0-1.275%, and parallel vs counter flow configurations. Results showed adding Al2O3 microparticles increased heat exchanger effectiveness substantially, with counter flow seeing up to 0.96 effectiveness
Experimental Investigation of Brazed Plate Heat Exchanger for Small Temperatu...IRJET Journal
1) The document presents an experimental investigation of a brazed plate heat exchanger (BPHE) for applications requiring a small temperature difference between hot and cold fluids.
2) The experiment varies the flow rate of hot water from 2 liters/minute to 6 liters/minute while keeping the inlet temperature and flow rate of cold water constant.
3) The results show that increasing the flow rate of hot water increases the heat transfer, due to increased turbulence from the corrugated plate design at higher velocities.
International Journal of Engineering Research and Applications (IJERA) is a team of researchers not publication services or private publications running the journals for monetary benefits, we are association of scientists and academia who focus only on supporting authors who want to publish their work. The articles published in our journal can be accessed online, all the articles will be archived for real time access.
Our journal system primarily aims to bring out the research talent and the works done by sciaentists, academia, engineers, practitioners, scholars, post graduate students of engineering and science. This journal aims to cover the scientific research in a broader sense and not publishing a niche area of research facilitating researchers from various verticals to publish their papers. It is also aimed to provide a platform for the researchers to publish in a shorter of time, enabling them to continue further All articles published are freely available to scientific researchers in the Government agencies,educators and the general public. We are taking serious efforts to promote our journal across the globe in various ways, we are sure that our journal will act as a scientific platform for all researchers to publish their works online.
Similar to CAD modeling of fluid domain with twisted tape inserts using Creo Design software (20)
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...IRJET Journal
1) The document discusses the Sungal Tunnel project in Jammu and Kashmir, India, which is being constructed using the New Austrian Tunneling Method (NATM).
2) NATM involves continuous monitoring during construction to adapt to changing ground conditions, and makes extensive use of shotcrete for temporary tunnel support.
3) The methodology section outlines the systematic geotechnical design process for tunnels according to Austrian guidelines, and describes the various steps of NATM tunnel construction including initial and secondary tunnel support.
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTUREIRJET Journal
This study examines the effect of response reduction factors (R factors) on reinforced concrete (RC) framed structures through nonlinear dynamic analysis. Three RC frame models with varying heights (4, 8, and 12 stories) were analyzed in ETABS software under different R factors ranging from 1 to 5. The results showed that displacement increased as the R factor decreased, indicating less linear behavior for lower R factors. Drift also decreased proportionally with increasing R factors from 1 to 5. Shear forces in the frames decreased with higher R factors. In general, R factors of 3 to 5 produced more satisfactory performance with less displacement and drift. The displacement variations between different building heights were consistent at different R factors. This study evaluated how R factors influence
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...IRJET Journal
This study compares the use of Stark Steel and TMT Steel as reinforcement materials in a two-way reinforced concrete slab. Mechanical testing is conducted to determine the tensile strength, yield strength, and other properties of each material. A two-way slab design adhering to codes and standards is executed with both materials. The performance is analyzed in terms of deflection, stability under loads, and displacement. Cost analyses accounting for material, durability, maintenance, and life cycle costs are also conducted. The findings provide insights into the economic and structural implications of each material for reinforcement selection and recommendations on the most suitable material based on the analysis.
Effect of Camber and Angles of Attack on Airfoil CharacteristicsIRJET Journal
This document discusses a study analyzing the effect of camber, position of camber, and angle of attack on the aerodynamic characteristics of airfoils. Sixteen modified asymmetric NACA airfoils were analyzed using computational fluid dynamics (CFD) by varying the camber, camber position, and angle of attack. The results showed the relationship between these parameters and the lift coefficient, drag coefficient, and lift to drag ratio. This provides insight into how changes in airfoil geometry impact aerodynamic performance.
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...IRJET Journal
This document reviews the progress and challenges of aluminum-based metal matrix composites (MMCs), focusing on their fabrication processes and applications. It discusses how various aluminum MMCs have been developed using reinforcements like borides, carbides, oxides, and nitrides to improve mechanical and wear properties. These composites have gained prominence for their lightweight, high-strength and corrosion resistance properties. The document also examines recent advancements in fabrication techniques for aluminum MMCs and their growing applications in industries such as aerospace and automotive. However, it notes that challenges remain around issues like improper mixing of reinforcements and reducing reinforcement agglomeration.
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...IRJET Journal
This document discusses research on using graph neural networks (GNNs) for dynamic optimization of public transportation networks in real-time. GNNs represent transit networks as graphs with nodes as stops and edges as connections. The GNN model aims to optimize networks using real-time data on vehicle locations, arrival times, and passenger loads. This helps increase mobility, decrease traffic, and improve efficiency. The system continuously trains and infers to adapt to changing transit conditions, providing decision support tools. While research has focused on performance, more work is needed on security, socio-economic impacts, contextual generalization of models, continuous learning approaches, and effective real-time visualization.
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...IRJET Journal
This document summarizes a research project that aims to compare the structural performance of conventional slab and grid slab systems in multi-story buildings using ETABS software. The study will analyze both symmetric and asymmetric building models under various loading conditions. Parameters like deflections, moments, shears, and stresses will be examined to evaluate the structural effectiveness of each slab type. The results will provide insights into the comparative behavior of conventional and grid slabs to help engineers and architects select appropriate slab systems based on building layouts and design requirements.
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...IRJET Journal
This document summarizes and reviews a research paper on the seismic response of reinforced concrete (RC) structures with plan and vertical irregularities, with and without infill walls. It discusses how infill walls can improve or reduce the seismic performance of RC buildings, depending on factors like wall layout, height distribution, connection to the frame, and relative stiffness of walls and frames. The reviewed research paper analyzes the behavior of infill walls, effects of vertical irregularities, and seismic performance of high-rise structures under linear static and dynamic analysis. It studies response characteristics like story drift, deflection and shear. The document also provides literature on similar research investigating the effects of infill walls, soft stories, plan irregularities, and different
This document provides a review of machine learning techniques used in Advanced Driver Assistance Systems (ADAS). It begins with an abstract that summarizes key applications of machine learning in ADAS, including object detection, recognition, and decision-making. The introduction discusses the integration of machine learning in ADAS and how it is transforming vehicle safety. The literature review then examines several research papers on topics like lightweight deep learning models for object detection and lane detection models using image processing. It concludes by discussing challenges and opportunities in the field, such as improving algorithm robustness and adaptability.
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...IRJET Journal
The document analyzes temperature and precipitation trends in Asosa District, Benishangul Gumuz Region, Ethiopia from 1993 to 2022 based on data from the local meteorological station. The results show:
1) The average maximum and minimum annual temperatures have generally decreased over time, with maximum temperatures decreasing by a factor of -0.0341 and minimum by -0.0152.
2) Mann-Kendall tests found the decreasing temperature trends to be statistically significant for annual maximum temperatures but not for annual minimum temperatures.
3) Annual precipitation in Asosa District showed a statistically significant increasing trend.
The conclusions recommend development planners account for rising summer precipitation and declining temperatures in
P.E.B. Framed Structure Design and Analysis Using STAAD ProIRJET Journal
This document discusses the design and analysis of pre-engineered building (PEB) framed structures using STAAD Pro software. It provides an overview of PEBs, including that they are designed off-site with building trusses and beams produced in a factory. STAAD Pro is identified as a key tool for modeling, analyzing, and designing PEBs to ensure their performance and safety under various load scenarios. The document outlines modeling structural parts in STAAD Pro, evaluating structural reactions, assigning loads, and following international design codes and standards. In summary, STAAD Pro is used to design and analyze PEB framed structures to ensure safety and code compliance.
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...IRJET Journal
This document provides a review of research on innovative fiber integration methods for reinforcing concrete structures. It discusses studies that have explored using carbon fiber reinforced polymer (CFRP) composites with recycled plastic aggregates to develop more sustainable strengthening techniques. It also examines using ultra-high performance fiber reinforced concrete to improve shear strength in beams. Additional topics covered include the dynamic responses of FRP-strengthened beams under static and impact loads, and the performance of preloaded CFRP-strengthened fiber reinforced concrete beams. The review highlights the potential of fiber composites to enable more sustainable and resilient construction practices.
Survey Paper on Cloud-Based Secured Healthcare SystemIRJET Journal
This document summarizes a survey on securing patient healthcare data in cloud-based systems. It discusses using technologies like facial recognition, smart cards, and cloud computing combined with strong encryption to securely store patient data. The survey found that healthcare professionals believe digitizing patient records and storing them in a centralized cloud system would improve access during emergencies and enable more efficient care compared to paper-based systems. However, ensuring privacy and security of patient data is paramount as healthcare incorporates these digital technologies.
Review on studies and research on widening of existing concrete bridgesIRJET Journal
This document summarizes several studies that have been conducted on widening existing concrete bridges. It describes a study from China that examined load distribution factors for a bridge widened with composite steel-concrete girders. It also outlines challenges and solutions for widening a bridge in the UAE, including replacing bearings and stitching the new and existing structures. Additionally, it discusses two bridge widening projects in New Zealand that involved adding precast beams and stitching to connect structures. Finally, safety measures and challenges for strengthening a historic bridge in Switzerland under live traffic are presented.
React based fullstack edtech web applicationIRJET Journal
The document describes the architecture of an educational technology web application built using the MERN stack. It discusses the frontend developed with ReactJS, backend with NodeJS and ExpressJS, and MongoDB database. The frontend provides dynamic user interfaces, while the backend offers APIs for authentication, course management, and other functions. MongoDB enables flexible data storage. The architecture aims to provide a scalable, responsive platform for online learning.
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...IRJET Journal
This paper proposes integrating Internet of Things (IoT) and blockchain technologies to help implement objectives of India's National Education Policy (NEP) in the education sector. The paper discusses how blockchain could be used for secure student data management, credential verification, and decentralized learning platforms. IoT devices could create smart classrooms, automate attendance tracking, and enable real-time monitoring. Blockchain would ensure integrity of exam processes and resource allocation, while smart contracts automate agreements. The paper argues this integration has potential to revolutionize education by making it more secure, transparent and efficient, in alignment with NEP goals. However, challenges like infrastructure needs, data privacy, and collaborative efforts are also discussed.
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.IRJET Journal
This document provides a review of research on the performance of coconut fibre reinforced concrete. It summarizes several studies that tested different volume fractions and lengths of coconut fibres in concrete mixtures with varying compressive strengths. The studies found that coconut fibre improved properties like tensile strength, toughness, crack resistance, and spalling resistance compared to plain concrete. Volume fractions of 2-5% and fibre lengths of 20-50mm produced the best results. The document concludes that using a 4-5% volume fraction of coconut fibres 30-40mm in length with M30-M60 grade concrete would provide benefits based on previous research.
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...IRJET Journal
The document discusses optimizing business management processes through automation using Microsoft Power Automate and artificial intelligence. It provides an overview of Power Automate's key components and features for automating workflows across various apps and services. The document then presents several scenarios applying automation solutions to common business processes like data entry, monitoring, HR, finance, customer support, and more. It estimates the potential time and cost savings from implementing automation for each scenario. Finally, the conclusion emphasizes the transformative impact of AI and automation tools on business processes and the need for ongoing optimization.
Multistoried and Multi Bay Steel Building Frame by using Seismic DesignIRJET Journal
The document describes the seismic design of a G+5 steel building frame located in Roorkee, India according to Indian codes IS 1893-2002 and IS 800. The frame was analyzed using the equivalent static load method and response spectrum method, and its response in terms of displacements and shear forces were compared. Based on the analysis, the frame was designed as a seismic-resistant steel structure according to IS 800:2007. The software STAAD Pro was used for the analysis and design.
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...IRJET Journal
This research paper explores using plastic waste as a sustainable and cost-effective construction material. The study focuses on manufacturing pavers and bricks using recycled plastic and partially replacing concrete with plastic alternatives. Initial results found that pavers and bricks made from recycled plastic demonstrate comparable strength and durability to traditional materials while providing environmental and cost benefits. Additionally, preliminary research indicates incorporating plastic waste as a partial concrete replacement significantly reduces construction costs without compromising structural integrity. The outcomes suggest adopting plastic waste in construction can address plastic pollution while optimizing costs, promoting more sustainable building practices.
ACEP Magazine edition 4th launched on 05.06.2024Rahul
This document provides information about the third edition of the magazine "Sthapatya" published by the Association of Civil Engineers (Practicing) Aurangabad. It includes messages from current and past presidents of ACEP, memories and photos from past ACEP events, information on life time achievement awards given by ACEP, and a technical article on concrete maintenance, repairs and strengthening. The document highlights activities of ACEP and provides a technical educational article for members.
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODELgerogepatton
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
accuracy rate of 99.50%.
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...University of Maribor
Slides from talk presenting:
Aleš Zamuda: Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapter and Networking.
Presentation at IcETRAN 2024 session:
"Inter-Society Networking Panel GRSS/MTT-S/CIS
Panel Session: Promoting Connection and Cooperation"
IEEE Slovenia GRSS
IEEE Serbia and Montenegro MTT-S
IEEE Slovenia CIS
11TH INTERNATIONAL CONFERENCE ON ELECTRICAL, ELECTRONIC AND COMPUTING ENGINEERING
3-6 June 2024, Niš, Serbia
Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMSIJNSA Journal
The smart irrigation system represents an innovative approach to optimize water usage in agricultural and landscaping practices. The integration of cutting-edge technologies, including sensors, actuators, and data analysis, empowers this system to provide accurate monitoring and control of irrigation processes by leveraging real-time environmental conditions. The main objective of a smart irrigation system is to optimize water efficiency, minimize expenses, and foster the adoption of sustainable water management methods. This paper conducts a systematic risk assessment by exploring the key components/assets and their functionalities in the smart irrigation system. The crucial role of sensors in gathering data on soil moisture, weather patterns, and plant well-being is emphasized in this system. These sensors enable intelligent decision-making in irrigation scheduling and water distribution, leading to enhanced water efficiency and sustainable water management practices. Actuators enable automated control of irrigation devices, ensuring precise and targeted water delivery to plants. Additionally, the paper addresses the potential threat and vulnerabilities associated with smart irrigation systems. It discusses limitations of the system, such as power constraints and computational capabilities, and calculates the potential security risks. The paper suggests possible risk treatment methods for effective secure system operation. In conclusion, the paper emphasizes the significant benefits of implementing smart irrigation systems, including improved water conservation, increased crop yield, and reduced environmental impact. Additionally, based on the security analysis conducted, the paper recommends the implementation of countermeasures and security approaches to address vulnerabilities and ensure the integrity and reliability of the system. By incorporating these measures, smart irrigation technology can revolutionize water management practices in agriculture, promoting sustainability, resource efficiency, and safeguarding against potential security threats.
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressionsVictor Morales
K8sGPT is a tool that analyzes and diagnoses Kubernetes clusters. This presentation was used to share the requirements and dependencies to deploy K8sGPT in a local environment.
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.