Wraparound heat pipe heat exchanger wahx selection tool. Enter doublepipeworkbench in file name as a name of your workbench and click on save button. Heat supply pipe network project of shandong huangtai power plant. A heat pipe is a device that effortlessly transports thermal energy from its one point to the other. This effect is similar to placing a paper towel in coffee, and watching the fluid rise up the paper towel. In this project heat pipe has been fabricated by using copper material as a container and. 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. Heat supply pipe network project of shandong huangtai. Thermal engineering projects plays a vital role in the field of thermal engineering. Methods of improving performance of the gas turbine mech document.
Office of industrial technologies oit forest products bestpractices technical case study subject. Heat supply pipe network project of shandong huangtai power plant resettlement action plan shandong huangtai power plant east china investigation and design institute under checc rp619. Introduction a heat pipe is a device that efficiently transports thermal energy from its one point to the other. The use of fin tubes in double pipe sections are normally economical if the annular heat transfer coefficient is less than 75% of the tube side coefficient. It is called a doublepipe exchanger because one fluid flows inside a pipe and the other fluid flows between that pipe and another pipe that surrounds the first. Boiler blowdown heat recovery project reduces steam. Design and demonstration of a heat exchanger for a compact natural gas compressor major qualifying project report submitted to the faculty of worcester polytechnic institute in partial fulfillment of the requirements for the degree of bachelor of science of mechanical engineering submitted by. A loop heat pipe with coherent pores integrated to the heat source is considered as a calculation model in this paperfig. A heat pipe is a heattransfer device that combines the principles of both thermal conductivity and phase transition to effectively transfer heat between two solid interfaces at the hot interface of a heat pipe a liquid in contact with a thermally conductive solid surface turns into a vapor by absorbing heat from that surface. The heat pipe is composed of a container lined with a wick that is filled with liquid near its saturation temperature.
The default working environment for geometry is 3d. The heat pipe is a vaporliquid phasechange device that transfers heat from a hot reservoir to a cold reservoir using capillary forces generated by a wick or porous material and a working fluid. Heat transfer heat transfer introduction practical occurrences, applications, factors affecting heat transfer categories and modes of heat transfer conduction in a slab and across a pipe convection free natural and forced in a pipe and over a solid object determination of convective heat transfer coefficient. Each pvc pipe project plan has an easytofollow adobe pdf document for download, as well as an accompanying trimble sketchup file. A heat pipe is a copper tube with an internal wick structure that. Project standards and specifications page 3 of 32 rev. Sep, 2012 kilopower project innovation a compact, low cost, fission reactor for exploration and science, scalable from 1 kw to 10 kw electric novel integration of available u235 fuel form, passive sodium heat pipes, and flightready stirling convertors would provide about 10x more power than the multi mission radioisotope thermoelectric. Aerospace cool satellite solar array, as well as shuttleleading edge during reentry. Heat pipe science and technology mechanical engineering. Pdf heat pipe utilizes continuous phase change process within a.
Pdf in this chapter, heat pipe manufacturing methods are examined with the goal of. Initially, the oph is evacuated and partially filled with the working fluid. Heat transfer equipment in hot services, other than coolers and condensers. When selecting the diameter and length of heat pipe it is important to consider the orientation with respect to gravity.
Beginning with a definition of the problem, including the temperature. Evaporation and condensation of the working fluid is what gives heat pipes their high effective thermal conductivity, which can be as high as 100,000 wm k. Heat exchangers power industries use heat pipe heatexchangers as. Heat pipes hardware m t l l i t b ith th i fmetal aluminum tube with grooves on the inner surface cold t ild extrusion grooves are filled with the working fluid water, ammonia, propylene, etc. Mechanical projects on modeling and fatigue analysis of automotive wheel rim. A heatpipe is a sealed copper tube that is under vacuum, and can transfer heat rapidly away from the source. Pdf major applications of heat pipe and its advances coupled with. 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. What is a heat pipe heat pipes basics and technology. Choosing a backup generator plus 3 legal house connection options transfer switch and more duration.
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. The aerospace industry has been a proving ground for heat pipe reliability, and has been used for decades in harsh and demanding environments. Download our heat pipes white paper below to find out more about how heat pipes work and the types of projects they are suitable for. Power generation from waste heat using heat pipe and. Design considerations when using heat pipes electronics cooling. Performance of heat pipe for different working fluids and fill ratios journal of mechanical engineering, vol. Aavid thermalloy for assisting us with obtaining heat pipes in a timely manner and alleviating the cost of our project. This tool is intended to provide the designer with the capability to perform a preliminary design selection and to evaluate. Design of forced convection heat transfer rig project topics. Design, construction and analysis of a flat heat pipe dtic. Dec 06, 2011 mechanical projects on modeling and fatigue analysis of automotive wheel rim. Furthermore, the heat pipes will operate in a horizontal position. Aug 17, 2015 heat exchanger design project chinedu charles isiadinso august 17, 2015 contents 1 introduction 2 2 design brief 2 3 theory 2 3.
If a heat pipe length is less than 150 mm, at 40c it passes. A heat exchanger is a device that is used to transfer thermal energy enthalpy between two or more fluids, between a solid surface and a fluid, or between solid particulates and a fluid, at different temperatures and in thermal contact. New technology demonstration program, kennedy space. Introduction heat pipe is a capillary twophase heat transfer device. The double pipe heat exchanger is one of the simplest types of heat exchangers. Typical teams will have 46 students, with engineering disciplines assigned based on the anticipated scope of the project. This program will give a performance curve of a copperwater heat pipe with the given input values. It describes the variety of complex and coupled processes of heat and mass transfer in heat pipes. Jessica holmes calvin lam bradford marx andrew nelson. Boiler blowdown heat recovery project reduces steam system energy losses at augusta newsprint. Pipe heat exchangers project standards and specifications page 4 of 8 rev. Heat pipe science and technology, an international journal is encompassed on publishing i fundamental studies of heat and mass transfer in heat pipes and twophase thermosyphons, ii new streams of technology development, iii industrial innovation in electronic thermal control, air conditioning, heating and cooling, aerospace thermal control.
Heat pipes seminar ppt with pdf report study mafia. Hancock paul reeves mountain energy partnership boulder, colorado march 1999 nrelsr71024738. Design using catia software and fabrication of the heat pipe is done. The pipeline is not the first project where heat pipes have been used in this manner. Also explore the seminar topics paper on heat pipe with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year 2019 2020. A heat pipe is a closed metal tube which transfers heat by natural convection with gasliquid change of phase. Heat pipes do not actually dissipate the heat and are therefore incorporated into many different types of heat sinks as helpers. Space for the vapour travel is provided inside the tank. Development of a large diameter pulsating heat pipe. 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 envelopewick material is to determine the. A heat pipe is a heattransfer device that combines the principles of both thermal conductivity.
The detectors need to be cooled to varying degrees. Control of boiler operation using plcscada mechanical 2011 project. Engineering senior design project double pipe heat exchanger. Get a grip on the nuts and bolts of holding your project together with this guide on fasteners. Heat pipe seminar presentation ppt linkedin slideshare.
The objective of this analysis project was twofold. Figure 1 crosssectional view of a typical wicked heat pipe 2 3. In a standard heat pipe, the inside of the container is lined with a wicking material. If a heat pipe length is larger than 150 mm, at 5 oc it. Main heat source of this system comes from xibu thermoeletric plant. 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.
Transports heat from a heat source to a heat sink works as an isothermalizer why twophase thermal system. Mercedes benz project report for mechanical final year students. This curve is a guide to help estimate heat transport capacity for acts copperwater heat pipes using common wick structures. Jacob perkins descendant of angier march patented the perkins tube in 1936 and. In this chapter, heat pipe manufacturing methods are examined with the goal of establishing costeffective procedures that will ultimately result in cheaper and more reliable heat pipes. Used to cool transistors and high density semiconductors. The following example, summarized in table 2, is presented to illustrate how heat pipes might be used to solve a thermal challenge for 70 w heat source with dimensions 20 mm x 20mm and a single 90 degree heat pipe bend required to transport heat from evaporator to condenser. In this project, heat pipes are explored for use in tpv energy conversion systems. Apr 27, 20 engineering senior design project double pipe heat exchanger university of central oklahoma. It is called a double pipe exchanger because one fluid flows inside a pipe and the other fluid flows between that pipe and another pipe that surrounds the first. The book consists of fourteen chapters, two appendices, and over 400 illustrations, along with numerous presents basic and advanced techniques in the analytical and numerical modeling of various heat pipe systems under a variety of operating. Ats engineering ebook advanced thermal solutions, inc.
Plant and linuo boiler house, forming four looped heat supply pipe network systems in the western, central, eastern and southern parts. Double pipe heat exchanger transport 2 project duration. International heat pipe conference in 1999, regarding operating conditions, dr. Performance evaluation report period of performance june 1996 to february 1998 c. Heat pipe applications electronics cooling small high performance componentscause high heat fluxes and high heat dissipation demands. Heat transfer heat transfer introduction practical occurrences, applications, factors affecting heat transfer categories and modes of heat transfer conduction in a slab and across a pipe convection free natural and forced in a pipe and over a solid object. Di pipe to eliminate the loss of 115 million gallons of water per year. If heat pipe pa take out and let ai below sol end of a heatp ipe 1015 mm. The temperature of the heat sink was critical as it had to be able to adequately cool the attached electronics. Polasek stated that thefor successful operation of an oscillating heat pipe, liquid plugs and vapor bubbles must coexist inside the capillary tube along its length. Design and demonstration of a heat exchanger for a compact.
A rule of thumb for the effective thermal conductivity of a heat pipe is 4000 wmk. 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. Air handlers or packaged air conditioning equipment shall be equipped with dehumidifier heat pipes supplied by heat pipe technology, inc. The doublepipe heat exchanger is one of the simplest types of heat exchangers. It utilizes the latent heat of the vaporized working fluid instead of the sensible heat. Experimental method figure 2 below shows an experimental test rig that used for the experiment. A variety of liquids and wicks are used to make a heat pipe, but the principle is the same. This project report contains experimental illustration of forced convective heat transfer rig, which consist of a tube, through which air is sent in by a blower.
This intricately geared 7segment display gives a gorgeous view of your subscriber count. 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. Enter double pipe workbench in file name as a name of your workbench and click on save button. R sekulib university of kentucky introduction a heat exchanger is a device that is used for transfer of thermal energy enthalpy between two or more fluids, between a solid surface and a fluid, or between solid particulates and a. The abi infrared detectors need to be cold to accurately measure the thermal energy radiated from the earths atmosphere.
Please provide your estimate of staffing in the below table. Design considerations when using heat pipes electronics. Historical perspectives, principles of operations, types of heat pipes are discussed. This page contains heat pipes seminar and ppt with pdf report. Several factors have contributed to the science and technology of the present stateofart heat pipe leading to the development of loop heat pipes, micro and miniature heat pipes and micro loop heat pipes. Mathematical model for heat transfer limitations of heat pipe. The main length of the heat pipe can be divided into three parts vz evaporator section, an adiabatic section and the condenser section.
Heat pipe working principle seminar projects topics. Boiler blowdown heat recovery project reduces steam system. The test section consists of a long electrical surface heater on the tube which serves as a constant heat flux source on the flowing medium. It applies the implied heat of the vaporized working fluid instead of the reasonable heat. New technology demonstration program, kennedy space center. Uphos project aims at analysing and characterising the behaviour of a large diameter pulsating heat pipe php on board rexus 22 sounding rocket. Dehumidifier heat pipes dhp engineering specifications. Goes17 loop heat pipe fact sheet role of the advanced baseline imager abi loop heat pipe loop heat pipes keep the abi at the correct operating temperatures. New technology demonstration program, kennedy space center, hangar l heat pipe project. The paper presents an overview of heat pipes, especially those used in different space missions. This program will assist the hvac design engineer in the proper selection of a wraparound heat pipe heat exchanger wahx and provide energy savings estimates.
Flanges can be added on the outer surface for easy integration with instruments or radiators the flange is an integral part of the extrusion. The vapor then travels along the heat pipe to the cold interface. The heat pipes used on the pipeline were specially designed for the project. The liquid evaporates into a gas that travels to the cooler end of the pipe, condenses back into liquid. To achieve the requirements set out in the brief, i considered variable factors affecting heat exchange e. To demonstrate the feasibility of a heatpipe forced convection cooler. Heat pipes heat transport limit for proper heat pipe operation, the total pressure drop must not exceed its capillary pressure head. Designing and building a heat pipe demonstration unit for a. The high thermal conductivity enables a heat pipe to transfer, and dissipate heat to a more convenient location through a capillary action.
Heat pipes and its applications lunds tekniska hogskola. Lee mason, nasa kilopower overview and mission applications. The areas of thermal projects listed in this article are as follows i. Explore heat pipe with free download of seminar report and ppt in pdf and doc format. The design of a heat pipe is rather complex with many things to consider.
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