Development of a high temperature heat pipe heat exchanger

  • 1.91 MB
  • English
Commission of the European Communities , Luxembourg
StatementG. Chaffey, J.C. Ralph, C.D. Wade.
ContributionsRalph, J. C., Wade, C. D., Commission of the European Communities. Directorate-General for Science, Research and Development.
ID Numbers
Open LibraryOL14936484M
ISBN 100119707101

Low temperature heat pipe heat exchangers have been successfully developed at Harwell and elsewhere that have been shown to be both efficient and easy to fit to existing plant. Choice of operating fluids and constructional materials to bridge the high temperature range between about °C and °C, without resorting to hot side bypass Cited by: 1.

An introduction to operational and design principles, this book offers a review of heat and mass transfer theory relevant to performance, leading into and exploration of the use of heat pipes, particularly in high-heat flux applications and in situations in which there is any combination of non-uniform heat loading, limited airflow over the heat generating components, and space or weight constraints.4/5(1).

Development aspects of a high temperature heat pipe heat exchanger for high temperature gas-cooled nuclear reactor systems R. Laubscher Department of Mechanical and Mechatronic Engineering Stellenbosch University Private Bag X1,Matieland, South Africa. The applications of heat pipes are many and varied, ranging from spacecraft thermal control to well bore heat transfer and permafrost preservation.

This chapter discusses applications of moderate and high-temperature units in many areas, including thermal storage and renewable energy. Heat Exchanger Design Guide: A Practical Guide for Planning, Selecting and Designing of Shell and Tube Exchangers takes users on a step-by-step guide to the design of heat exchangers in daily practice, showing how to determine the effective driving temperature difference for heat transfer.

Heat Transfer Equipment Design. Shah, Eleswarapu Chinna Subbarao, R. Mashelkar. CRC Press, High Temperature Waste Heat Recovery W J Rebello. Heat Pipe Heat Exchanger Design Theory R K Shah and A D Giovannelli.

/5(1). Introduction • Heat pipe is a capillary two-phase heat transfer device. – Transports heat from a heat source to a heat sink – Works as an isothermalizer • Why two-phase thermal system.

Description Development of a high temperature heat pipe heat exchanger PDF

– Efficient heat transferEfficient heat transfer – boiling and condensationboiling and condensation – Small temperature difference between the heat source and.

manufactured since all modern laptop computers use heat pipe technology to transfer heat away from the processor.

Furthermore, research and development for new heat pipes such as loop heat pipes, micro and miniature heat pipes, and pulsating heat pipes, has matured enough for use in. the heat exchanger, the cooler fluid will approach the inlet temperature of the hot fluid.

Counter flow heat exchangers are the most efficient of the three types. In contrast to the parallel flow heat exchanger, the counter flow heat exchanger can have the hottest cold-fluid temperature greater than the coldest hot-fluid Size: KB.

“Heat Pipe”. Since then, heat pipe has been undergone considerable research and development for a wide range of applications, including the cooling of electronic systems. - Definition Heat pipe is a high performance heat transmission device with an extremely high thermal conductivity.

The heat pipe heat exchanger offers many advantages compared to a conventional heat exchanger. It investments using the heat pipe heat transfer technology is within two years.

For demanding high-temperature environments up to 1,°C and outputs ranging from We up to 1MWe or more, BOSAL ECI offers tailor-made, modular plate heat exchangers that recycle heat from highly efficient, advanced, compact heat exchangers for energy conversion systems can be fully integrated into your power system.

Heat exchangers based on ceramic heat pipes were designed for use under highly abrasive and corrosive atmospheres at temperatures in the range of – °C for high-temperature power-engineering by: Most of the Perkins tubes were wickless gravity-assisted heat pipes (thermosyphons), in which heat transfer was achieved by a change of phase (latent heat of evaporation).

The Perkins tube design closest to the present heat pipe was patented by Jacob Perkins [3]. • High-temperature instruments (autoclave up to C and mechanical testing up to C) being installed this summer.

• Coupons tested at GA are being evaluated. Approach: ID05SS16 -- Identify the materials of High Temperature Heat Exchanger Development. General heat pipe structure 8 3.

Static condition 10 k. Start-up 12 5. Steady-state heat pipe regime Ik 6. Solution of the steady-state equations 2k 7.

Maximum heat flux 28 8. Multi-component fluids 31 9. optimal heat pipes 33 References 36 Figures 1. Cylindrical Heat Pipe Structure 37 2. Distribution of Pressures in a Heat Pipe 37 Cited by: A.

Heat Exchanger The purpose of a heat exchanger is just that-to exchange heat.

Details Development of a high temperature heat pipe heat exchanger PDF

Most processes require the heating or cooling of streams to produce a desired temperature before the stream can be fed to any heat exchanger there must be a fluid that requires a change in energy (heating or cooling) and a fluidFile Size: KB.

Evaporation and condensation of the working fluid is what gives heat pipes their high effective thermal conductivity, which can be as high asW/m K. During heat pipe operation, working fluid is vaporized in the evaporator, and then condensed in the condenser, transferring heat.

The first step in selecting a heat pipe working fluid and envelope/wick material is to determine the operating. Copper/water heat pipes have a copper envelope, use water as a working fluid and typically operate in the temperature range of 20 to °C.

Heat pipes are an extremely effective method of reducing hot spot temperatures and increasing allowable power in a system by moving heat to an external sink or spreading heat along a surface. pipes were initially at °C temperature. The heat pipe temperature reaches the water temperature in about 25 seconds, while the copper rod reaches just 30°C after seconds.

However, in an actual application when a heat pipe is soldered or epoxied to the base of a heat sink, the effective thermal conductivity of the heat pipe may be.

DESIGN AND DEVELOPMENT OF HIGH TEMPERATURE HEAT PIPES AND THERMOSIPHONS FOR PASSIVE HEAT REMOVAL FROM COMPACT HIGH TEMPERATURE REACTOR K. Panda a,*, A. Basak a, I.V. Dulera a a Reactor Engineering Division, Bhabha Atomic Research Centre, Trombay, Mumbai ,India E-mail: [email protected], [email protected], [email protected] Size: KB.

A heat pipe heat exchanger in which groups of heat pipes are arranged within a box, the center of which is partitioned, a high temperature fluid flows on one side, a low temperature fluid flows on the other side, thereby transferring the heat of the high temperature fluid to the low temperature fluid via fluid sealed in heat pipes.

The heat pipe based heat exchanger applications were discussed by Amir Faghri [4] in his latest applications of heat pipes for heat exchangers and electronic industry was reviewed by. Heat Pipes, 6th Edition, takes a highly practical approach to the design and selection of heat pipes, making it an essential guide for practicing engineers and an ideal text for postgraduate students.

This new edition has been revised to include new information on the underlying theory of heat pipes and heat transfer, and features fully updated applications, new data sections, and updated Cited by: Chaudourne S., Gruss A., Theoritical and experimental study of a high temperature heat pipe heat exchanger, application to a kW recuperator, 6th International Heat pipe Conference, Grenoble (France), Google ScholarCited by: 1.

Heat pipes are used in a wide range of applications, including electronics cooling, die-casting and injection moulding, heat recovery and energy conservation, de-icing and manufacturing process temperature control, and in domestic appliances.

An essential guide for practicing engineers and an ideal text for postgraduate students, the book takes a highly practical approach to the design and. faster than heat transfer due to conduction. Nowadays heat pipes are used in several applications, where one has limited space and the necessity of a high heat flux.

Of course it is still in use in space applications, but it is also used in heat transfer systems, cooling of computers, cell phones and cooling of solar collectors.

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STEEL researchers are working to develop a 3D-printed heat exchanger for high temperature and high pressure applications. Photo: Gregory Urquiaga, UC Davis Most heat exchangers today are limited in performance and efficiency because their structure limits maximum heat transfer rates—the way in which the thermal energy moves from the hot side.

@article{osti_, title = {Heat exchangers}, author = {Saunders, E A.D.}, abstractNote = {This book describes the construction and application of many of the unfired heat exchanger types used in the process industries. Also provides quick access to heat transfer and pressure loss data, plus manual thermal design methods and examples, for heat exchangers involving single phase flow duties.

As such, heat pipes operate at almost constant temperature. • The phase change heat transfer in heat pipes gives them very high thermal conductance. In fact, the conductivity of heat pipes is about times higher than copper.

• The phase change heat transfer in heat pipes gives them very high thermal conductance. circuits at the proper working temperature. The advantage of the heat pipe is in using phase change phenomena to remove thermal energy since the heat transfer coefficient of the phase change is normally times larger than typical heat transfer methods such as heat conduction, forced vapor or liquid convection.

Even though a heat pipe hasFile Size: KB.A Procedures Manual was created for the double-pipe heat exchanger. The theories of transient heat transfer in double-pipe heat exchangers were explained and followed by literature correlations.

All of the instrument specifications were defined. A procedure for use of Cited by: 2. A heat exchanger is a device which transfers heat from one medium to another, a Hydraulic Oil Cooler or example will remove heat from hot .