EFFECT OF PERFORATION ON ANNULAR FIN
•Download as PPTX, PDF•
2 likes•309 views
This document presents experimental research on the effect of perforations on the heat transfer of an annular fin heat sink. The experiment tested annular fins with various hole diameters at different heat inputs. Temperature measurements were taken at steady state to calculate heat transfer properties. Plots show the relationship between hole diameter, temperature difference, thermal resistance, heat transfer coefficient, and Nusselt number. A correlation was developed using multiple regression to predict the Nusselt number based on geometry and thermal parameters. Validation found the correlation predicted Nusselt number with an error of ±10%. Future work could involve computational fluid dynamics simulations to validate experimental results.
Report
Share
Report
Share
![PERFORATION EFFECT ON ANNULAR
FIN HEAT SINK
PRESENTED BY
ANISUL ZAFAR [B120220809]
CHHOTU RAM YADAV [B120220817]
PRADEEP KUMAR [B120220834]
RAMAKANT YADAV [B120220839]](https://image.slidesharecdn.com/pptfinal-170606091256/85/EFFECT-OF-PERFORATION-ON-ANNULAR-FIN-1-320.jpg)
Recommended
Thermal undershoot
This document discusses the problem of thermal undershoot in transient thermal analysis and provides a solution. It shows a slab with uniform heat flux on one face and convection on the other, with the transient analysis resulting in temperatures falling below ambient. It then provides a relationship between element size and time step to avoid undershoot, and applies this to the model by increasing the number of elements from 30 to 10, resolving the undershoot issue.
Nucleate Boiling simulation
Nucleate Boiling is a topic of interest for various industrial
applications, such as heat exchangers, fluid management in
micro-gravity for space applications or spray cooling. Whereas
some macroscopic models or semi-empirical correlations can provide realistic results in different configurations, the capabilities of such models are often limited by a lack of understanding about the microscopic details involved in the whole process. The case study gives a sample process of using ansys fluent to a reasonable level for investigating the phenomenon of departure from nucleate boiling in heat exchanger .
Design & CFD Analysis of Heat Exchanger
A shell and tube heat exchanger was designed to raise the temperature of fresh water from 40°C to 50°C using waste water at 80°C. Analytical calculations determined a heat transfer area of 0.7 m2 was required. CFD simulation validated the design, showing the fresh water temperature increased as required while the waste water temperature dropped by the calculated amount. The CFD determined heat transfer coefficient was within 3% of the theoretical value, validating the design calculations.
Pem fuel cell simulation using Ansys
A fuel cell uses the chemical energy of hydrogen or another fuel to cleanly and efficiently produce electricity. If hydrogen is the fuel, electricity, water, and heat are the only products. Fuel cells are unique in terms of the variety of their potential applications; they can provide power for systems as large as a utility power station and as small as a laptop computer. Fuel cells can be used in a wide range of applications, including transportation, material handling, stationary, portable, and emergency backup power applications. Fuel cells have several benefits over conventional combustion-based technologies currently used in many power plants and passenger vehicles. Fuel cells can operate at higher efficiencies than combustion engines and can convert the chemical energy in the fuel to electrical energy with efficiencies of up to 60%. Fuel cells have lower emissions than combustion engines. Hydrogen fuel cells emit only water, so there are no carbon dioxide emissions and no air pollutants that create smog and cause health problems at the point of operation. Also, fuel cells are quiet during operation as they have fewer moving parts. This work is a representation of Ansys capabilities to simulate fuel cell for academic learning .
Comfort cooling july 23
Air conditioning systems
2. Properties of moist air
3. Moist air processes
4. Space air conditioning
5. Indoor air quality--comfort and health
6. Heat transfer from human body
7. Heat transfer in building envelopes
8. Infiltration heat load and weatherizing
9. Computation of the heating load
10. Heat gain by solar radiation
11. Computation of the cooling load
12. Energy requirements for HVAC systems; building energy audit
13. Fans--performance, selection, and installation
14. Air flow in ducts and fittings
15. Design of duct systems
16. Codes & standards for building energy systems
17. Annual energy consumption
Centrifugal Pump Analysis CFD case Study
The Objective of the study is to perform a CFD analysis of a Centrifugal Pump. The geometry for the analysis contains two different parts i.e. volute casing and impeller. The necessity of the work is to follow the recommended procedure for the analysis using turbomachinery module CFX under ANSYS Workbench.
HPEA Filters Simulation using Fluent
Improving the capture efficiency of fine particles has attracted more attention because of the negative impact of fine particles on human health. In particular, high-efficiency particulate air (HEPA) filters need to be designed to effectively capture ultrafine particles smaller than 300 nm, which is important to produce clean breathable air and also to ensure safety in biosafety laboratories and the nuclear industry.
This PPT illustrates a sample procedure as per fluent to simulate flow through pleated filters using porus media concept .
Semiconductor Thermal Management
The document summarizes a study on thermal management strategies for semiconductor chips that generate 2W and 10W of heat. Researchers tested different heat sinks and air velocities. Their predictive thermal model matched experimental data within 5%. For a 2W chip, a 16-pin aligned heat sink kept temperature below 60°C at air velocities of 1-4 m/s. However, scaling to 10W with the tested strategies would not maintain the temperature below 60°C, requiring alternative strategies.
Recommended
Thermal undershoot
This document discusses the problem of thermal undershoot in transient thermal analysis and provides a solution. It shows a slab with uniform heat flux on one face and convection on the other, with the transient analysis resulting in temperatures falling below ambient. It then provides a relationship between element size and time step to avoid undershoot, and applies this to the model by increasing the number of elements from 30 to 10, resolving the undershoot issue.
Nucleate Boiling simulation
Nucleate Boiling is a topic of interest for various industrial
applications, such as heat exchangers, fluid management in
micro-gravity for space applications or spray cooling. Whereas
some macroscopic models or semi-empirical correlations can provide realistic results in different configurations, the capabilities of such models are often limited by a lack of understanding about the microscopic details involved in the whole process. The case study gives a sample process of using ansys fluent to a reasonable level for investigating the phenomenon of departure from nucleate boiling in heat exchanger .
Design & CFD Analysis of Heat Exchanger
A shell and tube heat exchanger was designed to raise the temperature of fresh water from 40°C to 50°C using waste water at 80°C. Analytical calculations determined a heat transfer area of 0.7 m2 was required. CFD simulation validated the design, showing the fresh water temperature increased as required while the waste water temperature dropped by the calculated amount. The CFD determined heat transfer coefficient was within 3% of the theoretical value, validating the design calculations.
Pem fuel cell simulation using Ansys
A fuel cell uses the chemical energy of hydrogen or another fuel to cleanly and efficiently produce electricity. If hydrogen is the fuel, electricity, water, and heat are the only products. Fuel cells are unique in terms of the variety of their potential applications; they can provide power for systems as large as a utility power station and as small as a laptop computer. Fuel cells can be used in a wide range of applications, including transportation, material handling, stationary, portable, and emergency backup power applications. Fuel cells have several benefits over conventional combustion-based technologies currently used in many power plants and passenger vehicles. Fuel cells can operate at higher efficiencies than combustion engines and can convert the chemical energy in the fuel to electrical energy with efficiencies of up to 60%. Fuel cells have lower emissions than combustion engines. Hydrogen fuel cells emit only water, so there are no carbon dioxide emissions and no air pollutants that create smog and cause health problems at the point of operation. Also, fuel cells are quiet during operation as they have fewer moving parts. This work is a representation of Ansys capabilities to simulate fuel cell for academic learning .
Comfort cooling july 23
Air conditioning systems
2. Properties of moist air
3. Moist air processes
4. Space air conditioning
5. Indoor air quality--comfort and health
6. Heat transfer from human body
7. Heat transfer in building envelopes
8. Infiltration heat load and weatherizing
9. Computation of the heating load
10. Heat gain by solar radiation
11. Computation of the cooling load
12. Energy requirements for HVAC systems; building energy audit
13. Fans--performance, selection, and installation
14. Air flow in ducts and fittings
15. Design of duct systems
16. Codes & standards for building energy systems
17. Annual energy consumption
Centrifugal Pump Analysis CFD case Study
The Objective of the study is to perform a CFD analysis of a Centrifugal Pump. The geometry for the analysis contains two different parts i.e. volute casing and impeller. The necessity of the work is to follow the recommended procedure for the analysis using turbomachinery module CFX under ANSYS Workbench.
HPEA Filters Simulation using Fluent
Improving the capture efficiency of fine particles has attracted more attention because of the negative impact of fine particles on human health. In particular, high-efficiency particulate air (HEPA) filters need to be designed to effectively capture ultrafine particles smaller than 300 nm, which is important to produce clean breathable air and also to ensure safety in biosafety laboratories and the nuclear industry.
This PPT illustrates a sample procedure as per fluent to simulate flow through pleated filters using porus media concept .
Semiconductor Thermal Management
The document summarizes a study on thermal management strategies for semiconductor chips that generate 2W and 10W of heat. Researchers tested different heat sinks and air velocities. Their predictive thermal model matched experimental data within 5%. For a 2W chip, a 16-pin aligned heat sink kept temperature below 60°C at air velocities of 1-4 m/s. However, scaling to 10W with the tested strategies would not maintain the temperature below 60°C, requiring alternative strategies.
Thermal conductivity
This document summarizes a study on calculating the thermal conductivity of different materials and composite materials. The study aimed to determine the thermal conductivity of various materials and composites made from polyester resin with different fibers or additives. Specimens of materials like brass, aluminum alloys and stainless steel, as well as composite materials with fillers like titanium, egg shells, wood or feathers were tested. Thermal conductivity was found to increase with increasing power and decrease with smaller specimen diameters. The composites generally had lower thermal conductivity than pure materials, with egg shells and palm seed composites exhibiting the best insulating properties.
Heat treatment
The document summarizes the simulation of gas quenching of a carburized pinion gear. Different heat transfer coefficients were applied to three zones of the gear to predict temperature profiles, residual stresses, phase distributions, and hardness profiles. The simulation results matched measured temperature data and predicted distortion of 0.0213mm radially after quenching.
Applications of Enthalpy, Helmhotz Fuction, Gibb's Free Energy, & J.J Thomson...
This document discusses several thermodynamic concepts including enthalpy, Gibbs energy, Helmholtz energy, and the Joule-Thomson effect. Enthalpy is the heat used or released in a system at constant pressure and is represented by ΔH. Gibbs energy relates properties of a system to entropy change and is useful for determining if reactions are spontaneous. The Joule-Thomson effect describes the temperature change of a gas when it expands from a high to low pressure region at constant enthalpy. The temperature change depends on factors like the gas type and initial temperature.
Optimization of rebar production process
optimization of rebar production process in metallurgy. Uses data analysis tools like Artificial Neural Network (ANN), Clustering, Fuzzy logic, Multiple Regression to arrive at the best solution to manufacturing of rebar steels.
Solucion problema 3
This document provides information to calculate the temperatures, pressures, specific work, and thermal efficiency of an Otto cycle with the following parameters:
1) Minimum pressure and temperature are 100 kPa and 27°C respectively at state 1. Heat added per cycle is 1500 kJ/kg.
2) Calculations are shown to determine the temperatures and pressures at each state in the Otto cycle for air with a compression ratio of 8.
3) The specific heat is calculated as 847.09 kJ/kg and the thermal efficiency is 56.4%
Stefan Jensen, Scantec
At the technology round table strategic presentations on Industrial Refrigeration will be presented by leading industry representatives, followed by a panel discussion.
Be 4120 presentation
The document describes an experiment to model a pipe heat exchanger that cools water as it passes through a tub of ice. The student measured the inlet and outlet temperatures of water running through a garden hose submerged in an ice bath. The outlet temperature reached a steady state of 17 degrees Celsius within 4 seconds. Modeling with finite differences predicted a steady state of 10.5 degrees Celsius, showing a difference from the experimental results. Decreasing the mass flow rate through the pipe could achieve lower outlet temperatures by allowing more time for heat transfer. Suggestions for improving the experiment included not pre-cooling the hose and using software to better model heat transfer.
Heat transfer experiment for chemical engineering student
This Pdf contain all the experiment of heat transfer lab.You can get many things which is needed for write an experiment.
235 r. sengupta
This document summarizes a study on assessing the thermal performance of semicircular fins under forced air convection and its application to air preheaters. The study finds that semicircular fins have greater thermal efficiency compared to circular fins of the same volume due to their larger surface area. Mathematical models are developed to analyze heat transfer in the fins and an air preheater. Various parameters like number of fins, pipe size, air velocity and temperature are examined. The results show that larger preheat can be achieved using semicircular fins, providing potential for higher energy efficiency.
Heat and fluid flow analysis in Cylindrical Solar Cavity Receiver having Para...
This document describes a numerical study of a cylindrical cavity solar receiver carrying a helical tube. A 3D model of the receiver was designed and simulated using CFD software to analyze parameters affecting heat loss and temperature distribution. The study found that temperature of the heat transfer fluid increases along the helical tube and is highest at the outlet. Increasing emissivity and heat transfer coefficient leads to higher heat loss and lower outlet temperature, while increasing concentration ratio increases heat gain through the opening.
Me2202 engineering thermodynamics uq - nov dec 2018
This document appears to be an exam for an engineering thermodynamics course. It contains 15 multi-part questions testing students' knowledge of key thermodynamics concepts. The questions cover topics like the first and second laws of thermodynamics, Rankine cycles, refrigeration cycles, psychrometrics, and using thermodynamics property tables and charts. The exam is divided into two sections worth 100 points total and requires students to calculate values, define terms, draw diagrams, and solve applied engineering problems involving thermodynamic systems and processes.
RN1305 thermal Data
This document contains data tables showing thermal characteristics of an RN1305 switch at different temperatures. The first table shows switching times of 1.66us at -25°C, 2.38us at 25°C, and 3.62us at 100°C. The second table lists off-state times of 96ns at -25°C, 112ns at 25°C, and 140ns at 100°C for the RN1305 switch.
4ChEB Group 6
The document contains information about heat transfer calculations for different scenarios:
1) Calculating the heat removal of a cooling coil made of stainless steel with given temperatures and properties.
2) Calculating the center temperature of an orange exposed to cold air for 6 hours using given properties and dimensions.
3) Calculating the time required and intermediate temperature for a rubber slab to reach a given temperature when placed between heated plates.
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 04 Assignment
This document contains information about a heat transfer course including homework assignments. The first problem discusses using a heat sink made of copper fins to increase surface area and convection heat transfer from computer chips. It provides dimensions for the heat sink fins and equations to calculate the maximum allowable chip power. The second problem asks for the temperature of a radioactive waste storage container buried underground.
General physics-i 18
This chapter discusses concepts of thermodynamics including temperature, heat, work, and heat capacity. It introduces the three laws of thermodynamics:
1) Zeroth law: two objects in thermal equilibrium with a third object are in equilibrium with each other
2) First law: the change in internal energy of a system is equal to the heat supplied minus the work done by the system
3) Applications of thermodynamic processes including adiabatic, constant-volume, cyclical, and free expansion processes.
Modes of heat transfer - conduction, convection, and radiation - are also covered.
Lecture 3
This document provides an outline for a lecture on heat transfer and fins. It discusses extended surfaces called fins which are used to increase surface area and enhance heat transfer. It covers types of fins, the heat transfer process in fins using the fin equation, and numerical techniques like the finite difference method to analyze fins. Natural convection and the thermal boundary layer are also mentioned.
Se prod thermo_examples_mst
The document contains examples of problems related to applied thermodynamics and heat engines. It includes 6 examples that cover topics like determining interface temperatures, heat transfer in heat exchangers, radiation from blackbodies, compression of gases, heating of water, and heat transfer over flat plates. The examples provide calculations and step-by-step workings to arrive at the solutions.
A report on Economic Feasibility for a chemical Process.(For details on Appen...
A Report prepared for a chemical process based on its economic feasibility and safety.
Its totally an academic project!
The course was named as "Process Analysis and Simulation" at IIT Gandhinagar,.
Objective of the study is as follows: To know how to optimize the process parameters to increase the production quality given set of possible constrains for a process.
I used the ASPEN Package to do the same and some basic calculations based on a book!
Mel242 6
This document discusses one-dimensional steady heat conduction problems. It introduces the electrical circuit theory analogy of thermal resistance and describes how to model heat transfer through composite walls and radial systems using thermal resistance networks. The document also discusses how to calculate the critical thickness of insulation on pipes to maximize heat transfer rate while maintaining a safe surface temperature for worker contact.
Manual tables all new
The document outlines 16 experiments related to heat transfer. Experiment 1 examines Fourier's Law of heat conduction along a brass bar. Experiment 2 looks at heat conduction along a composite bar. Experiment 3 analyzes the effect of cross-sectional area changes on temperature profiles. The remaining experiments involve topics like radial heat conduction, thermal conductivity of materials, free/forced convection, extended surfaces, inverse square law, Stefan-Boltzmann law, and various heat exchanger designs. Temperature and heat transfer measurements are recorded for each experiment.
FABRICATION OF EXPERIMENTAL SETUP TO EVALUATE CONVECTIVE HEAT TRANSFER COEFFI...
The convective heat transfer through circular depends on the inclination of pipe,Dia of pipe,heat value and insulation provided.
Ht 7
This document contains information about experiments in heat transfer lab manual. It includes 13 experiments related to different modes of heat transfer like through composite walls, critical heat flux, measurement of surface emissivity, forced convection, lagged pipe, natural convection, heat exchangers, pin-fin, Stefan-Boltzmann apparatus, thermal conductivity of concentric sphere and metal rod, transient heat conduction, heat pipe demonstration. For each experiment, it provides introduction, description of apparatus, experimentation procedure, observations, calculations and precautions.
More Related Content
What's hot
Thermal conductivity
This document summarizes a study on calculating the thermal conductivity of different materials and composite materials. The study aimed to determine the thermal conductivity of various materials and composites made from polyester resin with different fibers or additives. Specimens of materials like brass, aluminum alloys and stainless steel, as well as composite materials with fillers like titanium, egg shells, wood or feathers were tested. Thermal conductivity was found to increase with increasing power and decrease with smaller specimen diameters. The composites generally had lower thermal conductivity than pure materials, with egg shells and palm seed composites exhibiting the best insulating properties.
Heat treatment
The document summarizes the simulation of gas quenching of a carburized pinion gear. Different heat transfer coefficients were applied to three zones of the gear to predict temperature profiles, residual stresses, phase distributions, and hardness profiles. The simulation results matched measured temperature data and predicted distortion of 0.0213mm radially after quenching.
Applications of Enthalpy, Helmhotz Fuction, Gibb's Free Energy, & J.J Thomson...
This document discusses several thermodynamic concepts including enthalpy, Gibbs energy, Helmholtz energy, and the Joule-Thomson effect. Enthalpy is the heat used or released in a system at constant pressure and is represented by ΔH. Gibbs energy relates properties of a system to entropy change and is useful for determining if reactions are spontaneous. The Joule-Thomson effect describes the temperature change of a gas when it expands from a high to low pressure region at constant enthalpy. The temperature change depends on factors like the gas type and initial temperature.
Optimization of rebar production process
optimization of rebar production process in metallurgy. Uses data analysis tools like Artificial Neural Network (ANN), Clustering, Fuzzy logic, Multiple Regression to arrive at the best solution to manufacturing of rebar steels.
Solucion problema 3
This document provides information to calculate the temperatures, pressures, specific work, and thermal efficiency of an Otto cycle with the following parameters:
1) Minimum pressure and temperature are 100 kPa and 27°C respectively at state 1. Heat added per cycle is 1500 kJ/kg.
2) Calculations are shown to determine the temperatures and pressures at each state in the Otto cycle for air with a compression ratio of 8.
3) The specific heat is calculated as 847.09 kJ/kg and the thermal efficiency is 56.4%
Stefan Jensen, Scantec
At the technology round table strategic presentations on Industrial Refrigeration will be presented by leading industry representatives, followed by a panel discussion.
Be 4120 presentation
The document describes an experiment to model a pipe heat exchanger that cools water as it passes through a tub of ice. The student measured the inlet and outlet temperatures of water running through a garden hose submerged in an ice bath. The outlet temperature reached a steady state of 17 degrees Celsius within 4 seconds. Modeling with finite differences predicted a steady state of 10.5 degrees Celsius, showing a difference from the experimental results. Decreasing the mass flow rate through the pipe could achieve lower outlet temperatures by allowing more time for heat transfer. Suggestions for improving the experiment included not pre-cooling the hose and using software to better model heat transfer.
Heat transfer experiment for chemical engineering student
This Pdf contain all the experiment of heat transfer lab.You can get many things which is needed for write an experiment.
235 r. sengupta
This document summarizes a study on assessing the thermal performance of semicircular fins under forced air convection and its application to air preheaters. The study finds that semicircular fins have greater thermal efficiency compared to circular fins of the same volume due to their larger surface area. Mathematical models are developed to analyze heat transfer in the fins and an air preheater. Various parameters like number of fins, pipe size, air velocity and temperature are examined. The results show that larger preheat can be achieved using semicircular fins, providing potential for higher energy efficiency.
Heat and fluid flow analysis in Cylindrical Solar Cavity Receiver having Para...
This document describes a numerical study of a cylindrical cavity solar receiver carrying a helical tube. A 3D model of the receiver was designed and simulated using CFD software to analyze parameters affecting heat loss and temperature distribution. The study found that temperature of the heat transfer fluid increases along the helical tube and is highest at the outlet. Increasing emissivity and heat transfer coefficient leads to higher heat loss and lower outlet temperature, while increasing concentration ratio increases heat gain through the opening.
Me2202 engineering thermodynamics uq - nov dec 2018
This document appears to be an exam for an engineering thermodynamics course. It contains 15 multi-part questions testing students' knowledge of key thermodynamics concepts. The questions cover topics like the first and second laws of thermodynamics, Rankine cycles, refrigeration cycles, psychrometrics, and using thermodynamics property tables and charts. The exam is divided into two sections worth 100 points total and requires students to calculate values, define terms, draw diagrams, and solve applied engineering problems involving thermodynamic systems and processes.
RN1305 thermal Data
This document contains data tables showing thermal characteristics of an RN1305 switch at different temperatures. The first table shows switching times of 1.66us at -25°C, 2.38us at 25°C, and 3.62us at 100°C. The second table lists off-state times of 96ns at -25°C, 112ns at 25°C, and 140ns at 100°C for the RN1305 switch.
4ChEB Group 6
The document contains information about heat transfer calculations for different scenarios:
1) Calculating the heat removal of a cooling coil made of stainless steel with given temperatures and properties.
2) Calculating the center temperature of an orange exposed to cold air for 6 hours using given properties and dimensions.
3) Calculating the time required and intermediate temperature for a rubber slab to reach a given temperature when placed between heated plates.
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 04 Assignment
This document contains information about a heat transfer course including homework assignments. The first problem discusses using a heat sink made of copper fins to increase surface area and convection heat transfer from computer chips. It provides dimensions for the heat sink fins and equations to calculate the maximum allowable chip power. The second problem asks for the temperature of a radioactive waste storage container buried underground.
General physics-i 18
This chapter discusses concepts of thermodynamics including temperature, heat, work, and heat capacity. It introduces the three laws of thermodynamics:
1) Zeroth law: two objects in thermal equilibrium with a third object are in equilibrium with each other
2) First law: the change in internal energy of a system is equal to the heat supplied minus the work done by the system
3) Applications of thermodynamic processes including adiabatic, constant-volume, cyclical, and free expansion processes.
Modes of heat transfer - conduction, convection, and radiation - are also covered.
Lecture 3
This document provides an outline for a lecture on heat transfer and fins. It discusses extended surfaces called fins which are used to increase surface area and enhance heat transfer. It covers types of fins, the heat transfer process in fins using the fin equation, and numerical techniques like the finite difference method to analyze fins. Natural convection and the thermal boundary layer are also mentioned.
Se prod thermo_examples_mst
The document contains examples of problems related to applied thermodynamics and heat engines. It includes 6 examples that cover topics like determining interface temperatures, heat transfer in heat exchangers, radiation from blackbodies, compression of gases, heating of water, and heat transfer over flat plates. The examples provide calculations and step-by-step workings to arrive at the solutions.
A report on Economic Feasibility for a chemical Process.(For details on Appen...
A Report prepared for a chemical process based on its economic feasibility and safety.
Its totally an academic project!
The course was named as "Process Analysis and Simulation" at IIT Gandhinagar,.
Objective of the study is as follows: To know how to optimize the process parameters to increase the production quality given set of possible constrains for a process.
I used the ASPEN Package to do the same and some basic calculations based on a book!
Mel242 6
This document discusses one-dimensional steady heat conduction problems. It introduces the electrical circuit theory analogy of thermal resistance and describes how to model heat transfer through composite walls and radial systems using thermal resistance networks. The document also discusses how to calculate the critical thickness of insulation on pipes to maximize heat transfer rate while maintaining a safe surface temperature for worker contact.
Manual tables all new
The document outlines 16 experiments related to heat transfer. Experiment 1 examines Fourier's Law of heat conduction along a brass bar. Experiment 2 looks at heat conduction along a composite bar. Experiment 3 analyzes the effect of cross-sectional area changes on temperature profiles. The remaining experiments involve topics like radial heat conduction, thermal conductivity of materials, free/forced convection, extended surfaces, inverse square law, Stefan-Boltzmann law, and various heat exchanger designs. Temperature and heat transfer measurements are recorded for each experiment.
What's hot (20)
Applications of Enthalpy, Helmhotz Fuction, Gibb's Free Energy, & J.J Thomson...
Applications of Enthalpy, Helmhotz Fuction, Gibb's Free Energy, & J.J Thomson...
Heat transfer experiment for chemical engineering student
Heat transfer experiment for chemical engineering student
Heat and fluid flow analysis in Cylindrical Solar Cavity Receiver having Para...
Heat and fluid flow analysis in Cylindrical Solar Cavity Receiver having Para...
Me2202 engineering thermodynamics uq - nov dec 2018
Me2202 engineering thermodynamics uq - nov dec 2018
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 04 Assignment
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 04 Assignment
A report on Economic Feasibility for a chemical Process.(For details on Appen...
A report on Economic Feasibility for a chemical Process.(For details on Appen...
Similar to EFFECT OF PERFORATION ON ANNULAR FIN
FABRICATION OF EXPERIMENTAL SETUP TO EVALUATE CONVECTIVE HEAT TRANSFER COEFFI...
The convective heat transfer through circular depends on the inclination of pipe,Dia of pipe,heat value and insulation provided.
Ht 7
This document contains information about experiments in heat transfer lab manual. It includes 13 experiments related to different modes of heat transfer like through composite walls, critical heat flux, measurement of surface emissivity, forced convection, lagged pipe, natural convection, heat exchangers, pin-fin, Stefan-Boltzmann apparatus, thermal conductivity of concentric sphere and metal rod, transient heat conduction, heat pipe demonstration. For each experiment, it provides introduction, description of apparatus, experimentation procedure, observations, calculations and precautions.
Effect of controlling parameters on heat transfer during spray impingement co...
Effect of controlling parameters on heat transfer during spray impingement co...BIBHUTI BHUSAN SAMANTARAY
The heat transfer characteristics of air-water spray impingement cooling of stationary steel plate was experimentally investigated. Experiments were conducted on an electrically heated flat stationary steel plate of dimension 120 mm x 120 mm x 4 mm. The controlling parameters taken during the experiments were air-water pressures, water flow rate, nozzle tip to target distance and mass impingement density. The effects of the controlling parameters on the cooling rates were critically examined during spray impingement cooling. Air assisted DM water was used as the quenchant media in the work. The cooling rates were calculated from the time dependent temperature profiles were recorded by NI-cRIO DAS at the desired locations of the bottom surface of the plate embedded with K-type thermocouples. By using MS-EXCEL the effects of these cooling rate parameters were analysed The results obtained in the study confirmed the higher efficiency of the spray cooling system and the cooling strategy was found advantageous over the conventional cooling methods in the present steel industries.DSC- Basics PPT.ppt
This document discusses differential scanning calorimetry (DSC) and its applications in materials analysis. It begins by explaining the principle of DSC and how it works. It describes the two main types of DSC - power compensated and heat flux DSC. Details are provided about sample preparation, calibration, and how to interpret DSC thermograms. Applications discussed include measuring glass transitions, crystallization, melting behavior of polymers, and determining enthalpy changes during thermal transitions.
Solar Collector [Autosaved].pptx
The document describes a numerical simulation of the transient thermal behavior of a flat plate solar collector. The simulation applies finite differences to a two-dimensional grid representing the absorber plate and calculates temperatures and heat transfer. It examines the effects of irradiance, mass flow rate, and other parameters on temperatures, heat loss coefficient, and collector efficiency over time. Results are compared to previous studies and conclusions discuss future research opportunities.
International Journal of Engineering Research and Development (IJERD)
We would send hard copy of Journal by speed post to the address of correspondence author after online publication of paper.
We will dispatched hard copy to the author within 7 days of date of publication
EXPERIMENTAL STUDY OF MIXED CONVECTION HEAT TRANSFER USING CIRCULAR, SQUARE, ...
Pulling Fins are extended surfaces employed to enha nce the convective heat transfer from a surface for increasing heat dissipation. Fins with various geometries have been designed and used in various cooling application the selection o f particular fins configuration in any heat transfer application is an important state in desig ned process and takes into account the space,weight,manufacturing technique and cost considerat ion as well as the thermal characteristics it exhibits. Fins cross section profiles have profo und influence on thermal characteristics of Annular Fins and the surface area changes with chan ge of cross section of fins. This study deals with studying the performance of various avai lable fins profiles. Widely used fins profile viz. Rectangular,Triangular,Trapezoidal,Circular,Rhombic,and Elliptical Fins. In Addition to the normal configuration of fins,to ne w configurations were designed and created.
integrated brayton and rankine cycle
This document presents a summary of a presentation on integrating the Rankine and Brayton thermodynamic cycles. It includes an outline, diagrams of the combined cycle system, and calculations to determine parameters for the heat exchanger that transfers heat from the Brayton cycle exhaust to the Rankine cycle steam. The heat exchanger design procedure is outlined in steps and calculations are shown to determine the required heat transfer area and other design parameters like tube material and diameter. The overall goal is to utilize the exhaust from the Brayton gas turbine to superheat the steam in the Rankine cycle, improving efficiency.
heat pipe heat exchanger
1) The document investigates the thermal performance of a novel air-to-air heat pipe heat exchanger through experiments and numerical simulation. Experiments were conducted at different operating conditions to measure temperatures and calculate effectiveness.
2) Numerical simulations using ANSYS Fluent modeled half the evaporator geometry due to symmetry. The k-epsilon turbulence model was used without considering heat loss. Boundary conditions included inlet mass flow and temperatures and an outer heat flux.
3) Results show effectiveness increases with larger temperature differences between the evaporator inlet and condenser inlet. Both experiments and simulations provide information to analyze performance and identify design improvements for the heat exchanger.
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 05 Solutions
Chemical Engineering CH EN 3453 Heat Transfer
from University of Utah, 2014 Fall
Homework HW 05 Solutions
IRJET- Study of Heat Transfer Coefficient in Natural and Forced Convection by...
The document describes an experimental study on heat transfer by natural and forced convection using brass rods with different surface finishes (plane, semi-rough, and fully rough). An experimental setup was designed to measure the heat transfer coefficient. Brass rods were heated electrically and thermocouples measured the temperature distribution. Experiments were conducted with and without airflow over the rods. The results showed higher heat transfer coefficients and more uniform temperature distributions with forced convection compared to natural convection. Calculations were presented to determine heat transfer rates, average temperatures, heat transfer coefficients, and other parameters for different test conditions.
volumetric air receivers.pdf
This document summarizes the design and evaluation of an open volumetric air receiver for industrial process heat applications. Key points:
1) The researchers designed and analyzed a circular open volumetric air receiver using computational fluid dynamics to address flow instability at high temperatures.
2) A 4 kWth solar air tower simulator facility was built to experimentally evaluate the receiver. Testing showed the receiver could achieve air temperatures over 350°C with over 90% efficiency.
3) Issues like non-uniform heating and dust deposition were identified that need further work, such as an air recirculation system and cleaning strategy, but initial results indicate potential for process heat applications.
High Pressure Die Casting Cooling calculation with application of Thermodynamics
This document discusses calculations for cooling channel design in high pressure die casting tools. It begins with an overview of high pressure die casting and importance of cooling. Thermodynamic principles of heat transfer via conduction, convection and radiation are explained. Equations for heat transfer rate via different modes are provided. An example calculation is presented for a die casting tool producing an aluminum contactor housing. Total heat input, weight of molten aluminum, and heat transfer coefficients are calculated. Based on the calculations, cooling channel length and depth are determined as 299.53mm and 15.23mm for the moving side, and 258.74mm and 22.56mm for the fixed side. This resolves prior soldering issues.
Isentropic Blow-Down Process and Discharge Coefficient
The document describes an experiment to study the transient discharge of a pressurized tank through orifices of varying diameters, as well as a long tube, and compare the actual blowdown processes to an ideal isentropic process. An MKS pressure transducer and T-type thermocouple were calibrated. Pressure and temperature data were recorded during blowdown for each orifice/tube. The actual temperature decayed much more than the calculated isentropic temperature due to heat transfer. Discharge coefficients were calculated and ranged from 0.59 to 0.71, decreasing with smaller orifices/tubes due to friction.
Df4301619624
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
JIMEC Thermal modeling and Simulation of HX Conference Paper
1) The document describes a thermal modeling and simulation of an industrial shell and tube heat exchanger used to cool raw natural gas.
2) A thermal model was developed using the effectiveness-NTU method to determine the required heat transfer area and estimate the tube-side and shell-side heat transfer coefficients.
3) The results of the model showed that a heat transfer area of about 1132 m2 is required to provide a thermal duty of 1.4 MW, with tube-side and shell-side heat transfer coefficients of 950 W/m2K and 495 W/m2K respectively.
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 04 Solutions
Chemical Engineering CH EN 3453 Heat Transfer
from University of Utah, 2014 Fall
Homework HW 04 Solutions
FINAL2 PPT3
This document describes a computational and experimental investigation of fluid flow and heat transfer through a shell and tube heat exchanger. A group of students simulated the heat exchanger using ANSYS software to study heat transfer in counter and parallel flow configurations with and without baffles. The simulation results showed increased effectiveness when baffles were used and in counter flow. The simulated results agreed well with experimental data and heat transfer concepts. Future work is proposed to study pressure drop and varying baffle designs.
Experimental investigate to obtain the effectiveness of regenerator using Air.
The regenerator is a kind of heat exchanger that provides a way to get the gas to the low temperature with as much potential work (cooling power) as possible without carrying a lot of heat with it. It doesn’t put heat in or out of the system but it absorbs heat from the gas on one part of the pressure cycle and returns heat to the gas on the other part.
More recent applications of regenerators in cryogenic systems can be found in small cryogenic refrigerators (cryocoolers). Systems such as the Stirling Gifford-McMahon, pulse tube, Solvay, Vuilleumier and magnetic cycle refrigerators all use either a static or rotary regenerator. In fact, the success these coolers have achieved is directly related to the characteristics of compact size and efficiency of the regenerator.
Regenerator effectiveness of 99% results in 21% loss of refrigeration effect, similarly regenerator effectiveness of 98% results in 42% loss of refrigeration effect, with refrigeration effectiveness of 95.238% the loss of refrigeration is 100%. i.e. no net cooling is produced.
In cryogenic applications the regenerator is typically made up of 100 to 500 meshes SS 304, Phosphorous bronze screens or small lead spheres (150 to 300 micro meters) are used, that are tightly packed together and held in place on either end in the same manner.
To develop experimental setup at our laboratory level by using air as working fluid and find out the effectiveness of various regenerative materials is basic goal of this work.
ECONOMIC INSULATION FOR INDUSTRIAL PIPING
Thermal Insulation for Industrial Piping is a common method to reduce energy costs in production facilities while meeting process requirements. Insulation represents a capital expenditure & follows the law of diminishing returns. Hence the thermal effectiveness of insulation needs to be justified by an economic limit, beyond which insulation ceases to effectuate energy recovery. To determine the effectiveness of an applied insulation, the insulation cost is compared with the associated energy losses & by choosing the thickness that gives the lowest total cost, termed as ‘Economic Thickness’.
The following tutorial provides guidance to estimate the economic thickness for natural gas piping in winter conditions as an example case study.
Similar to EFFECT OF PERFORATION ON ANNULAR FIN (20)
FABRICATION OF EXPERIMENTAL SETUP TO EVALUATE CONVECTIVE HEAT TRANSFER COEFFI...
FABRICATION OF EXPERIMENTAL SETUP TO EVALUATE CONVECTIVE HEAT TRANSFER COEFFI...
Effect of controlling parameters on heat transfer during spray impingement co...
Effect of controlling parameters on heat transfer during spray impingement co...
International Journal of Engineering Research and Development (IJERD)
International Journal of Engineering Research and Development (IJERD)
EXPERIMENTAL STUDY OF MIXED CONVECTION HEAT TRANSFER USING CIRCULAR, SQUARE, ...
EXPERIMENTAL STUDY OF MIXED CONVECTION HEAT TRANSFER USING CIRCULAR, SQUARE, ...
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 05 Solutions
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 05 Solutions
IRJET- Study of Heat Transfer Coefficient in Natural and Forced Convection by...
IRJET- Study of Heat Transfer Coefficient in Natural and Forced Convection by...
High Pressure Die Casting Cooling calculation with application of Thermodynamics
High Pressure Die Casting Cooling calculation with application of Thermodynamics
Isentropic Blow-Down Process and Discharge Coefficient
Isentropic Blow-Down Process and Discharge Coefficient
JIMEC Thermal modeling and Simulation of HX Conference Paper
JIMEC Thermal modeling and Simulation of HX Conference Paper
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 04 Solutions
CH EN 3453 Heat Transfer 2014 Fall Utah Homework HW 04 Solutions
Experimental investigate to obtain the effectiveness of regenerator using Air.
Experimental investigate to obtain the effectiveness of regenerator using Air.
Recently uploaded
DfMAy 2024 - key insights and contributions
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.
ACEP Magazine edition 4th launched on 05.06.2024
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 MODEL
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%.
bank management system in java and mysql report1.pdf
truth is high but higher still is truth full living
Understanding Inductive Bias in Machine Learning
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
一比一原版(IIT毕业证)伊利诺伊理工大学毕业证成绩单专业办理
IIT毕业证原版定制【微信：176555708】【伊利诺伊理工大学毕业证成绩单-学位证】【微信：176555708】（留信学历认证永久存档查询）采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。
◆◆◆◆◆ — — — — — — — — 【留学教育】留学归国服务中心 — — — — — -◆◆◆◆◆
【主营项目】
一.毕业证【微信：176555708】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【微信：176555708】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分→ 【关于价格问题（保证一手价格）
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
学历顾问：微信：176555708
PROJECT FORMAT FOR EVS AMITY UNIVERSITY GWALIOR.ppt
Ppt on evs amity University project work.........................??????!?!?!?!!?!!?!!?/?/?/?/?/?
Literature Review Basics and Understanding Reference Management.pptx
Three-day training on academic research focuses on analytical tools at United Technical College, supported by the University Grant Commission, Nepal. 24-26 May 2024
一比一原版(UMich毕业证)密歇根大学|安娜堡分校毕业证成绩单专业办理
UMich毕业证原版定制【微信：176555708】【密歇根大学|安娜堡分校毕业证成绩单-学位证】【微信：176555708】（留信学历认证永久存档查询）采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。
◆◆◆◆◆ — — — — — — — — 【留学教育】留学归国服务中心 — — — — — -◆◆◆◆◆
【主营项目】
一.毕业证【微信：176555708】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【微信：176555708】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分→ 【关于价格问题（保证一手价格）
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
学历顾问：微信：176555708
Technical Drawings introduction to drawing of prisms
Method of technical Drawing of prisms,and cylinders.
New techniques for characterising damage in rock slopes.pdf
rock mass characterization and New techniques for characterising damage in rock slopes
Advanced control scheme of doubly fed induction generator for wind turbine us...
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
RAT: Retrieval Augmented Thoughts Elicit Context-Aware Reasoning in Long-Hori...
RAT: Retrieval Augmented Thoughts Elicit Context-Aware Reasoning in Long-Horizon Generation
Recently uploaded (20)
Tutorial for 16S rRNA Gene Analysis with QIIME2.pdf
Tutorial for 16S rRNA Gene Analysis with QIIME2.pdf
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODEL
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODEL
bank management system in java and mysql report1.pdf
bank management system in java and mysql report1.pdf
PROJECT FORMAT FOR EVS AMITY UNIVERSITY GWALIOR.ppt
PROJECT FORMAT FOR EVS AMITY UNIVERSITY GWALIOR.ppt
Literature Review Basics and Understanding Reference Management.pptx
Literature Review Basics and Understanding Reference Management.pptx
basic-wireline-operations-course-mahmoud-f-radwan.pdf
basic-wireline-operations-course-mahmoud-f-radwan.pdf
Technical Drawings introduction to drawing of prisms
Technical Drawings introduction to drawing of prisms
New techniques for characterising damage in rock slopes.pdf
New techniques for characterising damage in rock slopes.pdf
Advanced control scheme of doubly fed induction generator for wind turbine us...
Advanced control scheme of doubly fed induction generator for wind turbine us...
RAT: Retrieval Augmented Thoughts Elicit Context-Aware Reasoning in Long-Hori...
RAT: Retrieval Augmented Thoughts Elicit Context-Aware Reasoning in Long-Hori...
EFFECT OF PERFORATION ON ANNULAR FIN
- 1. PERFORATION EFFECT ON ANNULAR FIN HEAT SINK PRESENTED BY ANISUL ZAFAR [B120220809] CHHOTU RAM YADAV [B120220817] PRADEEP KUMAR [B120220834] RAMAKANT YADAV [B120220839]
- 2. Problems with the design of solid fins At 0 degree At 45 degree At 90 degree
- 4. Effect of perforation on thermal boundary layer Perforation enhance the convection current ,resulting in break off thermal boundary layer thickness between two adjacent surfaces Enhance the turbulence in stagnant air particle between two adjacent surface of annular fin
- 6. Details of Experimental setup Annular fin Dimmerstat Ammeter Temperature indicator Thermocouple (K-type)
- 7. Test Procedure Initially a constant power source of 3.2 W is supplied. The annular fin cylinder was set at an angular position of 90 degree i.e, air rises parallel to base cylinder. An initial period of 2-3 hrs is required before reaching steady state condition. After reaching steady state , temperature of fin surface is measured by thermocouple and ambient temperature is also measured. After taking first reading , increase value of power input and then same steps is repeated as described above.
- 8. Result and discussion Temp. difference for various diameter holes and heat input for D/d=2.33
- 9. Plot 2 Thermal resistance for various hole diameter and Rab for D/d=2.33
- 10. Plot 3 Average heat transfer coefficient various hole diameter and temp difference for D/d=2.33
- 11. Plot 4 Nusselt number for various hole diameters and Rab for D/d=2.33
- 12. THINGS TO BE CONCLUDED… Here we can conclude various relations between thermal as well as geometrical properties of the heat sink. We can compare the heat transfer rate of solid heat sink with perforated heat sink The maximum value of heat transnfer coefficient is found to be for 8 mm perforation.
- 13. Applications Cooling of electronic component Condenser and economizer of thermal power plant Dry type cooling tower Air cooled compressors Cooling of electric motors and transformers
- 14. Multiple regression technique LEAST SQUARE METHOD Nub=cRab a D/db log(Nub)=log(c) +alog(Rab)+blog(D/d) Y=C +aX1+bX2 𝑌 = 𝑛𝐶 + 𝑎 X1 + 𝑏 𝑋2 𝑋1𝑌 = 𝐶 𝑋1 + 𝑎 𝑋12 + 𝑏 𝑋1𝑋2 𝑋2𝑌 = 𝐶 𝑋2 + 𝑎 𝑋1𝑋2 + 𝑏 𝑋22
- 16. Validation of Correlation Nu=0.00656(Rab)0.8889(D/d)0.2844 Error in Nusselt number is found to be in the range of ± 10 %
- 17. Future Scope We can use various analysis software's such as CFD to validate the experimental result by using FVM technique. SIMPLE technique. TDMA MATRIX.