In past freon calculation and design of the heat pumps. Pdf heat exchanger design handbook matt pennington. Piping design handbook available for download and read online in other formats. Designing and building a heat pipe demonstration unit for a.
Notice do not operate this heat pipe coil at conditions other than the design. This handbook was prepared under nasa contract nass23406, updating of a heat pipe design and applications handbook. There are several limits that govern heat pipe theory, however in terrestrial applications the capillary limit is the most limiting factor. Details as to considerations of pipe systems are given in chapter 6, design of pumps. Setting shell side and tube side pressure drop design limits. Heat pipes and its applications lunds tekniska hogskola. Not only do flat heat pipes present unique engineering demands inherent in their operation to counteract pressure differences across their vessel. An illustration of a computer application window wayback machine an illustration of an open book. Such a design step was intended to bring at least two other sides of a heat pipe into thermal contact with the module heat sink. This design manual covers the technical aspects of designing pressure pipe systems with pvc pipe. More specifically, municipal potable water systems, as well as irrigation and sewer force main systems are described. Pdf basic principles of heat pipes and history researchgate. Term rcondenser contact effect is concerned about flooding in case of over cooling on heat pipe. Completely revised and updated to reflect current advances in heat exchanger technology, heat exchanger design handbook, second edition includes enhanced figures and thermal effectiveness charts, tables, new chapter, and additional topicsall while keeping the qualities that made the first edition a centerpiece of information for practicing engineers, research, engineers.
In contrast to the parallel flow heat exchanger, the counter flow heat exchanger can have the hottest coldfluid. The principle of the heat pipe is an amazingly sim ple one. Only fresh water is used, and there is no need for a special heat transfer or antifreeze solution. Counter flow heat exchangers are the most efficient of the three types. Design considerations when using heat pipes electronics.
All water heaters waste heat energy, even when the burner is off and the unit is sitting idle between heat ing cycles. A rule of thumb for the effective thermal conductivity of a heat pipe is 4000 wmk. Design considerations when using heat pipes electronics cooling. Heat pipe engineering ebook advanced thermal solutions. Mvk160 heat and mass transfer may 7, 2012, lund, sweden heat pipe, selection of working.
What is a heat pipe heat pipes basics and technology. In the united states, it is manufactured to meet the requirements of specifications. As a follow up with smiths bestselling work published in 2007 by gulf publishing company, the fundamentals of piping design, this handbook contributes more customized information on the necessary process equipment required for a suitable plant layout, such as pumps, compressors, heat exchangers, tanks, cooling towers and more. 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 drastically reduced due to the extra thermal resistances added by the bonding. Manual for the design of pipe systems and pumps engineering for a better world gea mechanical equipment. Open heat pipe design handbook this handbook was prepared under nasa contract nas523406, updating of a heat pipe design and applications handbook. The application of heat pipes should be considered when the thermal design is either conduction limited or when nonthermal goals such as weight cannot be achieved with other materials such as solid aluminum andor copper. Pdhonline course m371 2 pdh shell and tube heat exchangers. Show full abstract lockheed who has also worked for westinghouse and the u. An introduction to steam generation and distribution. Individual heat pipe each individual heat pipe is independent, ensuring the utmost in reliability and performance.
Ats engineering ebook advanced thermal solutions, inc. Large amounts of steam can be driven through a process very quickly which, combined with the previous point, allows very large amounts of heat to be transferred to the process in a very short time using relatively small heat exchangers. In heat pipe design, a high value of surface tension is desirable in order to enable. Wellillustrated with drawings and photographs, the manual explains each step of slinky installation from design to trench excavation. In addition to the pressure and impact testing, finished pvc pipe is tested by using acetone immersion tests and heat reversion tests. The optimum thermal design of a shell and tube heat exchanger involves the consideration of many interacting design parameters which can be summarized as follows. Notice this field handbook contains selected information that is excerpted and summarized from the ppi handbook for polyethylene pipe and performance pipe literatures.
A key pe pipe design consideration for an open system is the fact that the system will have a. Large amounts of steam can be driven through a process very quickly which, combined with the previous point, allows very large amounts of heat to be transferred to the process in a very. The work was administered by the goddard space flight center, greenbelt, maryland, and mr. Beginning with a definition of the problem, including the temperature. In the short heat pipe extreme 34 length, this effect is nearly zero, so please consult with wakefieldvette engineers to find the right solution for your application. As older facilities are upgraded or newly designed facilities are built, large plate type heat exchangers are replacing tube and shell heat exchangers and becoming more common. Heat pumps are systems that draw heat from onesource earth, water, air or ambient and transfer it to another. Remote fin stacks heat exchangers are a perfect example as with any heat pipe heat sink design, size the heat pipe with an additional 25% thermal headroom if youre interested in spreading heat to reduce hot spot andor attach to a local heat exchanger the ratio of heat spreader to heat source should be on the order of 20.
The heat pipe is a highperformance heat transfer device, able to transfer heat at high rates, over considerable distances, with almost no temperature drop. Design features compact easy installation minimizes heatloss andor condensation bergen preinsulated pipe supports, inc. Process fluid assignments to shell side or tube side. Properties of pvc pressure pipe and pressure system design. A practical guide for planning, selecting and designing of shell and tube exchangers takes users on a stepbystep guide to the design of heat exchangers in daily practice, showing how to determine the effective driving temperature difference for heat transfer. Handbook of heating, ventilation and air conditioning. But standby losses for six months out of every year can add up. A practical approach provides a practical study of modern heat pipe. Acts expertise with heat pipe technology can find a thermal solution for your industry.
Cda has converted the copper tube handbook into an app for either your tablet or smartphone. Application guide ag 31008 3 introduction this application guide is written to assist the designer in geothermal heat pump design. Copper tube handbook introduction table of contents. The heat pipe must also withstand bonding temperatures. A good description of the history of the heat pipe technology can be found in an early article published by yale eastman currently a director of act in scientific american in may 1968. Heat exchanger design handbook pdf alzaytoonah university. This application guide is written to assist the designer in geothermal heat pump design. Section titles include slinky ground heat exchanger design, pipe material selection and standards, coil configurations, forming the circular heat exchanger, installation, and excavation safety. A loop heat pipe with coherent pores integrated to the heat source is considered as a calculation model in this paperfig. 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. Fluid engine oil sea water inlet temperature, c 65 20 outlet temperature, c 55 25 heat load, kw 117. The new app makes it easier and quicker for plumbers, hvac technicians and contractors to obtain information about copper tube, piping and fitting as well as different joining methods and applications.
This article is intended to offer design guidance when using heat pipes for the most prevalent types of electronics applications. The focus of this heat pipe design guide is on sintered copper heat pipes wwater for electronics cooling applications. All water heaters waste heat energy, even when the burner is off and the unit is sitting idle between heating cycles. When selecting the diameter and length of heat pipe it is important to consider the orientation with respect to gravity. Chapter hvac applications for pe pipe 465 then discharges the water back into the water supply. Pressure piping systems design municipal technical. Design, construction and analysis of a flat heat pipe dtic. Design a double pipe heat exchanger with bare inner multitubes that can be used to cool engine oil with cold sea water.
The total heat load a heat pipe can carry is a function of total length, evaporator and condenser length, diameter, and orientation with respect to gravity. The selection of wick and wall materials is based on the criteria discussed in chapter 3. Quality control includes individual testing and assembly of each heat pipe. It is a companion guide to mcquays catalog 3301, water source heat pump design manual, which discusses boilertower heat pump design. Heat pipe design handbook, volume 1 internet archive. Granted, the unit dedicated to heat ing the floor only wastes heat during the winter months. In its basic form, the heat pipe consists of a sealed tube, lined. Download pdf piping design handbook book full free. Project description by means of knowledge about the theory of heat pipes, one is now able to carry out a basic calculation of a heat pipe. The heat content of the latent heat can be given up and released very quickly. Notice do not exceed the maximum soak temperature as indicated on the nameplate. Loop heat pipe with coherent porous wick since the porous material used for current heat pipes is usually stochastic structure, it is hard to apply analytical or numerical methods for design optimization. This typically translates to dissipated heat of between 20200 watts less if power density is high and power density up to around 25 wcm 2.
However, new improvements in gasket design and overall heat exchanger design have allowed some large scale applications of the plate type heat exchanger. This book provides a practical study of modern heat pipe engineering, discussing how it can be optimized for use on a wider scale. For selfregulating heating cable introduction this design guide addresses the heat tracing requirements of complex piping. If you need more basic heat pipe information, please visit these two pages. Both tests are used to check that the proper degree of fusion has. Whether the application is a small project or a complete network of piping and equipment, designing an electric heat tracing system for complex piping is simplified by using thermon selfregulating cables. Pdf piping design handbook download full pdf book download. Complete load capability colmac heat pipe coils are designed to handle virtually any heatingcooling load without the need for gravity assist.
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