HEAT-TRANSFER EQUIPMENT COSTS
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basic information that should be supplied to a fabricator in order to obtain a price estimate or firm quotation on a proposed heat exchanger (Process Information, Mechanical Information)
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Plate heat exchangers use thin corrugated plates pressed from metal to induce turbulence and improve heat transfer efficiency. They have overall heat transfer coefficients 3-4 times higher than shell and tube heat exchangers. This allows for more compact equipment but also higher pressure drops. Plate heat exchangers are classified as gasketed, brazed, or welded based on how the plates are joined together. Their design involves matching the thermal length requirement of each fluid to the characteristic of the plate channel geometry.
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In continuous technological development, an automotive industry has increased the demand for high efficiency engines. A high efficiency engines in not only based on its performance but also for better fuel economy and less emission rate. Radiator is one of the important parts of the internal combustion engine cooling system. The manufacturing cost of the radiator is 20 percent of the whole cost of the engine. So improving the performance and reducing cost of radiators are necessary research. For higher cooling capacity of radiator, addition of fins is one of the approaches to increase the cooling rate of the radiator. In addition, heat transfer fluids at air and fluid side such as water and ethylene glycol exhibit very low thermal conductivity. As a result there is a need for new and innovative heat transfer fluids, known as “Nano fluid” for improving heat transfer rate in an automotive radiator. Recently there have been considerable research findings highlighting superior heat transfer performances of nanofluids about 15-25% of heat transfer enhancement can be achieved by using types of nanofluids. With these specific characteristics, the size and weight of an automotive car radiator can be reduced without affecting its heat transfer performance. An automotive radiator (Wavy fin type) model is modeled on modeling software CATIA V5 and performance evaluation is done on pre-processing software ANSYS 14.0. The temperature and velocity distribution of coolant and air are analyzed by using Computational fluid dynamics environment software CFX. Results have shown that the rate of heat transfer is better when nano fluid (Si C + water) is used as coolant, than the conventional coolant.
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3) The design, construction, and testing of a prototype chiller that achieved comparable COP values to commercial chillers during testing with waste heat.
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Conventional refrigeration system is a type of refrigeration systems which are costly; noisy, harmful gases released from a machine based on application of this type of system and it is required more maintenance. So, we need to go for unconventional refrigeration systems like vortex tube refrigeration system, which produce less vibrations and which require less maintenance and which are noiseless. It is required for our mechanical engineers to look for enhancing the performance of such vortex tubes. So as a part of my project work, I have chosen various sizes of vortex tubes and test their performances for finding out optimum performance. We will be testing the performance of vortex tubes with different ‘l/d’ ratios and different cold fractions, with different pressures and different nozzle sizes.
Heat exchangers echancement
This document discusses techniques for enhancing heat exchangers. It defines heat exchangers as devices that facilitate heat exchange between two fluids without mixing. Various types of heat exchangers are classified based on construction and flow arrangement. Common applications include industrial processes, heating/cooling, and vehicles. Enhancement aims to make heat exchangers more compact, reduce pumping power, and increase heat transfer efficiency. Both active techniques using external power and passive surface modifications are covered. Examples of passive techniques include inserts like twisted tapes, coils, and baffles. Nanoparticles can also be used in nanofluids to further enhance heat transfer. The document encourages thinking of new enhancement methods.
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Analysis of Double Pipe Heat Exchanger With Helical Fins
This document analyzes a double pipe heat exchanger with helical fins through computational fluid dynamics (CFD). It aims to study the flow and temperature fields inside the tubes for different helical fin angles. The geometry of the double pipe heat exchanger is modeled in CATIA V5 and meshed in Hypermesh. CFD simulations are performed in ANSYS Fluent to analyze the flow and temperature distributions for fin angles of 0, 5, 10, 15, 20, and 25 degrees. The results determine that heat transfer rate and overall heat transfer coefficient increase with helical fins compared to a smooth tube, with fins providing additional surface area to enhance heat transfer.
Refinery mechanical piping systems a fundamental overview
This paper is based on experience gained by the author in fabrication, design and installation in multinational
manufacturing, contracting and client companies in India, Saudi Arabia and Bahrain. Piping systems in
any oil refinery is the most critical mechanical hardware for the transportation of feed product i.e. crude oil to
processing units, process piping intra and inter process units and further movement of intermediate distillates
from one processing unit to another for the purpose of processing, blending, value addition and maximization of
recovery from feed stock to finish products. Pipelines are the ultimate transportation solution for despatch of final
product to storage tank farms and to the shipping terminal for internal consumption and for export. This paper lists
proven and established international design
REPORT-MSD
The document summarizes the fabrication and testing of a heat exchanger test rig. Key points:
- The test rig was designed and built to study a counter-flow tube heat exchanger using aluminum sheets and tubes.
- Finite element analysis was performed on the rig design to analyze stresses. Water was heated to 40°C and pumped through one side while tap water entered the other side.
- Effectiveness-NTU method was used to calculate theoretical outlet temperatures which were compared to experimental readings to determine error percentages.
Engineering & Design of Pipe Supports
This presentation will cover pipe support design, 3D modeling, Finite Element Analysis, special stress and thermal cases, along with the unique cases that brought on new pipe support designs. Increase your understanding of the value-added services that are offered by PT&P.
Shell
This document provides guidance on the design and rating of shell and tube heat exchangers. It discusses fundamentals of heat transfer calculations and selection of appropriate heat transfer models. Key considerations in the thermal design of shell and tube heat exchangers include process parameters, mechanical design factors such as tube dimensions and layout, and selection of heat transfer correlations. Software tools can help optimize the design but require experience to achieve practical designs.
Mechanical_design_of_process_system_volume-2.
This chapter discusses the engineering mechanics of bins, silos, and stacks. Key points include:
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- Two types of solid flow can occur - mass flow along walls or funnel flow through the center. Proper design depends on predicting the flow pattern.
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cfakepathcompactheatexchangersintd-090513122457-phpapp02
This document provides an overview of compact heat exchangers. It defines compact heat exchangers and discusses the main types, including plate and frame, brazed plate, welded plate, spiral, plate fin, and printed-circuit heat exchangers. Advantages include improved efficiency, smaller size and weight, and lower costs. Limitations include lack of awareness, limited choice for high pressures, and susceptibility to fouling. The document also briefly discusses fouling, costs, design considerations, and environmental aspects of compact heat exchangers.
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Basicsofheatexchanger shellandtube-150226051621-conversion-gate02
Shell and tube heat exchangers are commonly used in various industries. They work by transferring heat between two fluids flowing through the shell side and tube side. Key components include the shell, tubes, tubesheet, baffles, and connections. Design considerations include materials selection, codes and standards compliance, strength calculations for pressure components, and hydrostatic testing. Detailed drawings are required to communicate the design to manufacturers.
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OIP presentation 2
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J03401059064
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
THERMOACOUSTIC REFRIGERATION
1. A group of 5 students - Aagam Shah, CH Nikhil Reddy, CH Pavan, U Phani Abhinav, and Vaishali Das - under the guidance of Dr. B. Satyanarayana are developing a thermoacoustic refrigerator.
2. Thermoacoustic refrigerators use sound waves in a pressurized gas to transfer heat without refrigerants or moving parts. This project aims to design and test a prototype refrigerator.
3. The document outlines the objectives, methodology, literature review, work progress to date including design calculations and modeling, and applications of thermoacoustic refrigeration.
Experimentation on heat pipe and cfd analysis for performance enhancement
Abstract
Heat Pipe is a heat transfer device used in many applications and it is very similar in some respects to the thermosyphon. Since there were several limitations of thermosyphon, heat pipe was developed. The idea of the heat pipe was first suggested in 1942, since then over a several decades the serious development of a heat pipe took place. Heat pipe mainly consists of three regions viz. evaporator, adiabatic and condenser section. The heat pipe differs from the thermosyphon by virtue of its ability to transport heat against gravity by an evaporation-condensation cycle. This research work includes experimentation on available heat pipe, development of CFD model and its validation with experimental results using CFD Tool. The results obtained by CFD are in good agreement with an experimental results. Since the heat pipe is used for transferring the heat, this research work focuses on increasing the heat transfer by modified model, modifications in terms of increased surface area, is proposed. From CFD analysis it was found that the proposed modified heat pipe shows enhancement in performance in terms of heat transfer rate by 19% when it is simulated for without heat sink case and 45% while with heat sink case, compared to conventional heat pipe. The mixture multiphase model from CFD too is used for simulation of heat pipe.
Experimentation on heat pipe and cfd analysis for performance enhancement
Abstract
Heat Pipe is a heat transfer device used in many applications and it is very similar in some respects to the thermosyphon. Since there were several limitations of thermosyphon, heat pipe was developed. The idea of the heat pipe was first suggested in 1942, since then over a several decades the serious development of a heat pipe took place. Heat pipe mainly consists of three regions viz. evaporator, adiabatic and condenser section. The heat pipe differs from the thermosyphon by virtue of its ability to transport heat against gravity by an evaporation-condensation cycle. This research work includes experimentation on available heat pipe, development of CFD model and its validation with experimental results using CFD Tool. The results obtained by CFD are in good agreement with an experimental results. Since the heat pipe is used for transferring the heat, this research work focuses on increasing the heat transfer by modified model, modifications in terms of increased surface area, is proposed. From CFD analysis it was found that the proposed modified heat pipe shows enhancement in performance in terms of heat transfer rate by 19% when it is simulated for without heat sink case and 45% while with heat sink case, compared to conventional heat pipe. The mixture multiphase model from CFD too is used for simulation of heat pipe.
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This document provides an introduction and overview of piping design. It defines piping and piping systems, discusses international design standards like ASME B31.3, and covers key piping components such as pipes, fittings, flanges and valves. The document also outlines the stages of a piping design project from start to completion and summarizes important considerations like stress analysis, material selection and support spacing calculations.
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Experimentation on heat pipe and cfd analysis for performance enhancement
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Experimentation on heat pipe and cfd analysis for performance enhancement
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Taxes imposed on the earnings of organizations and individuals are income taxes. Marginal tax rate and flat tax rate. Marginal tax rates are harmful to the economy.
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Interest Rate that does not include any consideration of compound interest.Continuous compounding. EAIR.
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The money returned to the owners of capital for use of their capital.
Compound interest is the result of reinvesting interest, rather than paying it out.
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Operating labour, allow one extra man on days. It is unlikely
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The document summarizes the components and cost factors involved in purchasing plate and packed towers for mass transfer equipment. The purchased cost can be divided into the shell cost, internals cost like trays and packing, and auxiliary costs. The purchased cost is calculated as the bare cost from figures multiplied by a material factor and pressure factor. Figures are provided showing examples of tray types and cross-sectional views of plate and packed towers.
Gross Profit, Net Profit
Gross profit, net profit per capital investment. Total annual product cost equals the total annual sales.
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Manufacturing costs per capital investment.Manufacturing costs are: Variable production costs, fixed charges, and plant-overhead.
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Capital cost estimate classifications, Chemical industry. Turnover ratio.
Total product are manufacturing cost and general expenses. product costs are calculated on:
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Cost Indices for Industrial Application
Cost Indices, change in cost over time. Cost indexes are maintained in areas such as construction, chemical and mechanical industries. Lang’s method , Hand method.
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Capital needed to supply the necessary manufacturing and
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Time value of money is measured by interest rates. Money has time value because it can earn more over time through interest (earning power) and its purchasing power changes with inflation. The present value of a future amount can be calculated using the present value formula, which takes into account the discount rate and number of periods until receipt. As time passes, the value of assets invested in a project will change. Assets are items owned that have future economic benefit and are divided into tangible assets with physical form and intangible assets without physical form.
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The scientific method is a set of procedures used to develop explanations of natural phenomena and possibly to predict additional phenomena. For example,
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HEAT-TRANSFER EQUIPMENT COSTS
- 1. HEAT-TRANSFER EQUIPMENT COSTS Dr. K. Shahzad Baig Memorial University of Newfoundland (MUN) Canada
- 2. Heat-Transfer Equipment Cost The basic information that should be supplied to a fabricator in order to obtain a price estimate or firm quotation on a proposed heat exchanger: • Process Information • Mechanical Information
- 3. Process Information 1. Fluids to be used Include fluid properties if they are not readily available to the fabricator. 2. Flow rates of fluid 3. Entrance and exit temperatures of fluids 4. Amount of vaporization or condensation 5. Operating pressures and allowable pressure drops 6. Fouling factors 7. Rate of heat transfer
- 4. Mechanical Information 1. Size of tube Diameter, length, wall thickness 2. Tube lay out and pitch Horizontal tubes, Vertical tubes, U-bends 3. Maximum and minimum temperatures and pressures 4. Necessary corrosion allowances 5. Special codes involved 6. Recommended materials of construction
- 5. Figure 6.3 (a, b) Shell and tube heat exchanger
- 6. 𝑷𝒖𝒓𝒄𝒉𝒂𝒔𝒆𝒅 𝒄𝒐𝒔𝒕 = 𝒃𝒂𝒓𝒆 𝒄𝒐𝒔𝒕 𝒇𝒓𝒐𝒎 𝒇𝒊𝒈𝒖𝒓𝒆 𝒙 𝑻𝒚𝒑𝒆 𝒇𝒂𝒄𝒕𝒐𝒓 𝒙 𝑷𝒓𝒆𝒔𝒔𝒖𝒓𝒆 𝒇𝒂𝒄𝒕𝒐𝒓
- 8. Figure 6.4 (a, b) Gasketed plate and frame and double pipe heat exchanger
- 10. Following books were used in preparation of notes Blank, L., Tarquin. A. 2005. Engineering Economy. 6th Edition, McGraw-Hill. Eschenbach, T. G. 2003. Engineering Economy”, 2nd Edition, Oxford University Press Riggs, J. L., Bedworth, D. D., Randhawa, S. U. 1996. Engineering Economics”, 4th Edition, Tata McGraw-Hill. Riggs, J. L., West. T. M. 1986. Essentials of Engineering Economics”, 2nd Edition, McGraw-Hill. Peter, M. S., Timmerhaus, K. D. 1991. Plant Design and Economics for Chemical Engineers. 4th Edition, McGraw-Hill.