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Dissertations / Theses on the topic 'Loop Heat Pipe (LHP)'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Suh, Junwoo. "Proof of Operation in a Planar Loop Heat Pipe (LHP) Based on CPS Wick." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1131033062.

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2

HAMDAN, MOHAMMAD OMAR. "LOOP HEAT PIPE (LHP) MODELING AND DEVELOPMENT BY UTILIZING COHERENT POROUS SILICION (CPS) WICKS." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1049987207.

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3

Santos, Nadjara dos. "Desenvolvimento de tubo de calor circuitado (Loop Heat Pipe-LHP) para aplicações espaciais." Instituto Nacional de Pesquisas Espaciais, 2009. http://urlib.net/sid.inpe.br/mtc-m18@80/2009/04.07.18.33.

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Satélites artificiais são constituídos de vários equipamentos eletrônicos e mecânicos que, na maioria dos casos, dissipam calor e requerem condições térmicas de operação bastante diferenciadas. Sistemas compostos por tubos de calor circuitados-LHP são de grande confiabilidade no controle térmico de equipamentos eletrônicos, estruturas e satélites, por manterem suas temperaturas em faixas de operação bem restritas e não utilizarem partes móveis. Esses sistemas operam passivamente por efeitos de forças capilares geradas no evaporador capilar, o qual adquire calor de uma fonte quente sendo transf

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4

Hamdan, Mohammad Omar Mohammad. "Loop heat pipe (LHP) modeling and development by utilizing coherent porous silicon (CPS) wicks." Cincinnati, Ohio : University of Cincinnati, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=ucin1049987207.

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5

Fleming, Andrew J. "Aircraft Thermal Management Using Loop Heat Pipes." Wright State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=wright1238086423.

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6

PONUGOTI, PRIYANKA. "STUDY OF TRANSIENT BEHAVIOR OF THE EVAPORATOR OF THE MICRO LOOP HEAT PIPE AND MODIFICATIONS TO THE EXISTING GLOBAL MODEL." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1152120818.

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7

Medis, Praveen S. "Development of Microfluidic Packaging Strategies, with Emphasis on the Development of a MEMS Based Micro Loop Heat Pipe." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1131996727.

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8

ARRAGATTU, PRAVEEN KUMAR. "OPTIMAL SOLUTIONS FOR PRESSURE LOSS AND TEMPERATURE DROP THROUGH THE TOP CAP OF THE EVAPORATOR OF THE MICRO LOOP HEAT PIPE." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1152120112.

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9

Soler, Philippe. "Expérimentation et modélisation thermohydraulique des boucles à pompage capillaire de type Loop Heat Pipe (-LHP-) : étude du lien entre la chambre de compensation et l'évaporateur." Aix-Marseille 1, 2009. http://www.theses.fr/2009AIX11011.

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Une LHP est un système passif de transport de l'énergie utilisé pour le contrôle thermique d'équipements électroniques présents dans de nombreuses applications (satellites, transport terrestre. . . ). Dans ce travail de thèse, l'effort a été porté sur la description des phénomènes physiques au sein de l'ensemble évaporateur-réservoir d'une LHP. Le couplage entre transferts thermiques et répartition des phases, dans cet élément clé qui est le moteur du système, a été étudié du point de vue expérimental et de la modélisation. Une démarche de définition de l'instrumentation d'une LHP a été dévelo

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10

Giraudon, Rémi. "Contribution to the manufacturing and the understanding of the thermal behaviour of capillary structures dedicated to Loop Heat Pipes." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI003/document.

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Les boucles diphasiques à pompage thermo-capillaire de type LHP (pour Loop Heat Pipe, en anglais), dont le fonctionnement s’apparente à celui d’un caloduc, permettent un transfert de chaleur particulièrement efficace et entièrement passif entre une source chaude et une source froide. Ce transfert s’effectue au moyen d’un fluide diphasique, mû grâce à la force motrice capillaire générée par un matériau poreux contenu dans l’évaporateur/réservoir de la LHP. Outre son rôle de barrière hydraulique entre les phases liquide et vapeur, ce matériau doit assurer une fonction de barrière thermique afin

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11

Mecheri, Boubakeur. "Refroidissement d'une armoire de Télécommunication avec Bouche Diphasique Thermosyphon." Phd thesis, Université de Technologie de Belfort-Montbeliard, 2011. http://tel.archives-ouvertes.fr/tel-00720653.

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France Télécom possède des armoires de télécommunication dont la puissance est limitée à cause de la dissipation thermique des équipements actifs qui entraîne une augmentation de leur température interne. La puissance des équipements limite le nombre de clients qu'il est possible de connecter aux services des réseaux à hauts débits. En plus de cette contrainte, les armoires sont soumises à des effets liés au climat (ensoleillement) qui peuvent être sévères et difficiles à maîtriser. Ceci nécessite l'intégration de systèmes de refroidissement permettant de maintenir la température des composant

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12

Alexseev, Alexandre Viktorovich. "Micro loop heat pipe evaporator coherent pore structures." Texas A&M University, 2003. http://hdl.handle.net/1969.1/1303.

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Loop heat pipes seem a promising approach for application in modern technologies where such thermal devices as cooling fans and radiators cannot satisfy overall requirements. Even though a loop heat pipe has a big potential to remove the thermal energy from a high heat flux source, the heat removal performance of heat pipes cannot be predicted well since a first principles of evaporation has not been established. An evaporation model based on statistical rate theory has been recently suggested by Ward and developed for a single pore by Oinuma. A loop heat pipe with coherent pore wick structure

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13

Zhang, Xingxing. "Investigation of a novel solar photovoltaic/loop-heat-pipe heat pump system." Thesis, University of Hull, 2014. http://hydra.hull.ac.uk/resources/hull:8422.

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With the widespread deployment of solar photovoltaic (PV) and thermal devices imminent, this research aims to resolve some engineering barriers to the existing solar photovoltaic/thermal (PV/T) technologies by incorporating an innovative loop heat pipe (LHP) and a typical heat pump. In addition, a coated aluminium-alloy (Al-alloy) sheet replaces the conventional baseboard for the PV cells to improve heat exportation. As a result, this research has developed a novel solar PV/LHP heat pump system to maximise the electrical output of a PV module and generate an additional amount of heat simultane

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14

Hanks, Daniel Frank. "Design, fabrication, and characterization of a multi-condenser loop heat pipe." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/74985.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 67-68).<br>A condenser design was characterized for a multi-condenser loop heat pipe (LHP) capable of dissipating 1000 W. The LHP was designed for integration into a high performance aircooled heat sink to address thermal management challenges in advanced electronic systems. The multi-layer stack of condensers utilizes a sintered wick design to stabilize the liquidvapor interface and prevent liquid flooding of the lower

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Kariya, H. Arthur (Harumichi Arthur). "Development of an air-cooled, loop-type heat pipe with multiple condensers." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/78237.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 169-172).<br>Thermal management challenges are prevalent in various applications ranging from consumer electronics to high performance computing systems. Heat pipes are capillary-pumped devices that take advantage of the latent heat of vaporization of a working fluid to achieve low thermal resistance (~0.1 °C/W), and have been of particular interest to address these thermal management needs for cooling solutions such

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16

Sircar, Jay D. "Manufacturing and characterization of welded, sintered condensers for a loop heat pipe." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/83744.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 55-56).<br>A manufacturing process plan was developed for a welded condenser utilizing a sintered wick. Electronic devices have progressed to the point where new designs are limited by the thermal management system used to ensure safe operating temperatures. Coupling the effects of high surface area of multiple condensers, the low thermal resistance of loop heat pipes, and the increased dissipation rates with an inte

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17

SHARMA, MONIKA. "THIN FILM EVAPORATION IN THE PORES OF MICRO LOOP HEAT PIPE WITH NON-UNIFORM HEAT FLUX." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1132344889.

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18

Gherlone, Joseph A. "Operating characteristics of a propylene charged loop heat pipe with potential spacecraft applications." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA304826.

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Thesis (M.S. in Systems Technology (Space Systems Operations) and M.S. in Engineering Science (Astronautics)) Naval Postgraduate School, September 1995.<br>Thesis advisor(s): Matthew Kelleher, P.J. Marto. "September 1995." Bibliography: p. 81. Also available online.

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19

Wang, Zhangyuan. "Investigation of a novel façade-based solar loop heat pipe water heating system." Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/12343/.

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Solar thermal is one of the most cost-effective renewable energy technologies, and solar water heating is one of the most popular solar thermal systems. Based on the considerations on the existing barriers of the solar water heating, this research will propose a novel façade-based solar water heating system employing a unique loop heat pipe (LHP) structure with top-level liquid feeder, which will lead to a façade-integrated, low cost, aesthetically appealing and highly efficient solar system and has considerable potential to provide energy savings and reduce carbon emissions to the environme

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20

Koveal, Catherine Helene. "Design of parallel plate condensers with sintered wicks for a loop heat pipe." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/61880.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2010.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 129-131).<br>New innovations and integrations of existing cooling methods are needed to enable high performance operation of high power electronic equipment. Air-cooled solutions are attractive due to their simplicity; however these solutions are normally limited to low power dissipation rates. Through a novel design and integration of a blower and a compact heat exchanger, low thermal resistance and high efficiency hea

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21

MANTRAVADI, NARESH VENKATA. "MEMS-BASED DEVELOPMENT OF A SILICON CPS WICK FOR LOOP HEAT PIPE APPLICATIONS." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin978637264.

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22

Roche, Nicholas Albert. "Development of a compensation chamber for use in a multiple condenser loop heat pipe." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/81623.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 89-90).<br>The performance of many electronic devices is presently limited by heat dissipation rates. One potential solution lies in high-performance air-cooled heat exchangers like PHUMP, the multiple condenser loop heat pipe presented here. This device features a number of design improvements that lead to significant increases in performance relative to state of the art heat exchangers. In this work, a compensation ch

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23

Anand, A. R. "Investigations on Miniature Loop Heat Pipe with Flat Evaporator." Thesis, 2017. http://etd.iisc.ac.in/handle/2005/4308.

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The present investigation on a miniature loop heat pipe (LHP) with flat evaporator is motivated by two factors. Firstly, miniature loop heat pipes are required for thermal management of small electronics in spacecraft with heat dissipation ranging from 50 W to 100 W (heat flux up to ~ 10 W/cm2). An LHP with flat evaporator is easier to mount on an electronic package (heat source) without a saddle. Though axially grooved aluminium – ammonia heat pipes are being used for thermal management in spacecraft, when the electronic package is located far away from the radiator, conventional heat pipes a

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24

Adoni, Abhijt Avinash. "Theoretical And Experimental Studies Of Capillary Pumped Loop And Loop Heat Pipe." Thesis, 2008. https://etd.iisc.ac.in/handle/2005/747.

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Capillary pumped loop (CPL) and loop heat pipe (LHP), are two-phase heat transport devices which rely on surface tension induced by a fine pore wick to drive a working fluid in a loop. These are based on a working principle similar to that of heat pipes -closed evaporation and condensation cycle being maintained by capillary pumping. CPLs and LHPs are gaining importance as a part of the thermal control system of modern high power spacecraft, electronic thermal management, cryogenics, etc. A mathematical model to simulate the thermo-hydraulic performance of CPLs and LHPs is developed to aid i

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Adoni, Abhijt Avinash. "Theoretical And Experimental Studies Of Capillary Pumped Loop And Loop Heat Pipe." Thesis, 2008. http://hdl.handle.net/2005/747.

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Capillary pumped loop (CPL) and loop heat pipe (LHP), are two-phase heat transport devices which rely on surface tension induced by a fine pore wick to drive a working fluid in a loop. These are based on a working principle similar to that of heat pipes -closed evaporation and condensation cycle being maintained by capillary pumping. CPLs and LHPs are gaining importance as a part of the thermal control system of modern high power spacecraft, electronic thermal management, cryogenics, etc. A mathematical model to simulate the thermo-hydraulic performance of CPLs and LHPs is developed to aid in

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26

Chang, Wen-Hua, and 張文華. "A Parametric Study on Loop Heat Pipe." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/16314135586510414488.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>89<br>This study presents the effects of parameters on loop heat pipe theoretically and experimentally. The theoretical model, based on steady-state energy balance, is ultilized to determine the operating temperature. The parameters of wick, condenser and transport length are discussed theoretically and the results are: (1) After start-up, the influences of wick parameters are negligible. (2) When sink temperature is lower than ambient, the performance curve can be attributed to fix

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27

Ramesh, Uppala. "Thermal Analysis of Closed Loop Pulsating Heat Pipe." 2004. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2507200514185500.

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28

Yu, Cheng-Jung, and 余政融. "Investigation of Loop Heat Pipe Energy Storage System." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/89259290174143322073.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>95<br>The energy storage system has been widely researched and used in recent years due to the energy crisis and environment protection. The development of energy storage system can help to collect the natural energy such as solar energy, or recycle the excess heat generated from the industrial processes. The loop heat pipe employs the phase-change mechanism, and hence has better efficiency. Loop heat pipes are not only cheap and easy to get, its passive design also makes it more reliable. Thus a loop heat pipe is used in our energy storage system. The liquid inside

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Uppala, Ramesh, and 迦文西. "Thermal Analysis of Closed Loop Pulsating Heat Pipe." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/91437765245664491044.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>93<br>This study aims to flow visualization and thermal analysis of a closed loop pulsating heat pipe based on inclination angle, charging ratio, type of fluid and heat flux for thermal control of micro electronic equipments. Although a variety of designs are in use, understanding of the fundamental processes and parameters affecting the PHP operation are still vague. A vertical, closed loop, glass PHP with water, methanol and 2-propanol as working fluids is first experimentally investigated for a range of heat inputs, inclination angles and charging ratios. Experi

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Chu, Mao-Long, and 朱茂榕. "Heat Transfer Enhancement of Loop Heat Pipe with Self-Rewetting fluid." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/62422980327924299494.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>102<br>The objective of this study is the application of self-rewetting fluid as the working fluid on loop heat pipe (LHP), with sintered copper as the chosen capillary structure material; this study also investigates the effect of using different contents and concentrations of self-rewetting fluid on heat transfer performances of LHP as well as compares the results with those from using water as working fluid. Previous studies have shown that using self-rewetting fluid as working fluid can enhance the heat transfer mechanisms of pool boiling, traditional heat pipes

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Chen, Chun-Nan, and 陳俊男. "Heat Transfer Analysis of a Loop Heat Pipe with Biporous Wicks." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/40969420730557999181.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>96<br>In recent years, the high-power electronic devices cause the increasing demand of heat dissipation. Thus, how to improve the heat transfer capacity of a loop heat pipe (LHP) by the wick structure will be an important topic. The purpose of this article is to discuss the heat transfer performance and behavior of biporous wick which made by the mixture of nickel powders and pore former. The study was conducted following a statistical method using a two-level factorial plan involving three variables: the particle of pore former (32~88μm), the pore former content(2

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Chen, Chun-Nan. "Heat Transfer Analysis of a Loop Heat Pipe with Biporous Wicks." 2008. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-1107200813350600.

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Juan, Chun-Chia, and 阮俊嘉. "Heat Transfer Enhancement of a Loop Heat Pipe with Bidispersed Wicks." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/89053937052331807590.

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碩士<br>臺灣大學<br>機械工程學研究所<br>98<br>The purpose of this article is to develop high-performance bidispersed wicks utilized in a LHP’s evaporator and to improve heat transfer crisis in formerly monoporous wicks. The influence of heat transfer performance about difference pore-size parameters will be discussed. The study was conducted by sintering the nickel powder clusters, which mixed with binder into a bidispersed wick. A two-level factorial plan of statistical design was introduced involving two variables: the average cluster size (53、82μm), and the cluster size distribution range (14、42μm). More

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Huang, Hsin-Fu, and 黃信輔. "The Study of Double Closed-Loop Pulsating Heat Pipe Heat Exchangers." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/bs3434.

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Kao, Cheng-Chun, and 高政群. "Design and Fabrication of the Micro Loop Heat Pipe." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/04273706136085447176.

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Tu, Tang-Hung, and 涂堂烘. "Fabrication and Test of Closed-loop Pulsating Heat Pipe." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/25477134870862668660.

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碩士<br>國立清華大學<br>動力機械工程學系<br>93<br>Pulsating heat pipe (PHP) is a newly developed two-phase-flow heat transfer device, which can transfer heat very efficiently in both sensible and latent forms. Due to the simple structure and the bent characteristics, PHP becomes a prosperous heat transfer machine. The purpose of this study is to build several closed-loop PHPs made by copper tube (outer diameter 1/8”, inner diameter 2mm) or glass tube (outer diameter 3mm, inner diameter 2mm), which is partially filled with a working fluid such as water. Based on the above developed PHP, the experiments were co

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Yen, Yu-Yuan, and 葉裕源. "Study of Temperature Control Technology by Loop Heat Pipe." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/17898209543487450655.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>91<br>The main purpose of the present research is to develop a temperature control box by loop heat pipe. By modifying the rotational speed of the fan, we can attain a constant temperature in the box. In order to accurately control temperature in the box, a temperature controller is designed by means of dynamic system identification and simulation. A prototype of temperature control box by loop heat pipe using PIC 16F877 micro-processor was built and tested. The experiment results show that temperature control error is less than 0.5℃. The performance of the designed

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Cheng, Kuo-Chang, and 鄭國章. "Loop heat pipe with the fine-pore wick structure." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/15798444874056762824.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>91<br>In this paper, the effects of the capillary structure parameters on heat transfer capacity were analyzed theoretically. Then, a wick structure with high capillary capacity was manufactured with fixed porosity by pressed sintering process. Furthermore, the various capillary parameters (porosity, pore radius and permeability) were measured and the relationships among them were also developed. Finally, the present fine-pore wick structure was installed in a loop heat pipe, and the system performance such as heat transfer capacity, thermal resistance and anti-grav

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Chen, Tai-Yu, and 陳泰宇. "The Fabrication and Performance Test of Loop Heat Pipe." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/49766522754308179578.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>89<br>The subject of this study is to develop a loop heat pipe with a heat transport capacity of 200W. First, the effects of wick structure''s parameters, like powder radius, porosity, thermal conductivity, and thickness were discussed. Then, design was made according to the following condition; hydrodynamic condition, start-up condition and fluid supercooling condition. Secondly, the facility and procedure of fabrication were set up. These include the die of wick structure, test facility, clean and w

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Yang-Hsin, Wang, and 王彥勛. "A Study of Biporous Wicks for Loop Heat Pipe." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/46881563777138096765.

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碩士<br>臺灣大學<br>機械工程學研究所<br>95<br>The purpose of this study was to investigate the effects of various pore size distributions of biporous wicks for a Loop heat pipe (LHP). The study was conducted following a statistical method using a two-level factorial plan involving three variables (particle size of pore former：48~62μm and 74~88μm Na2CO3, pore former content： 20vol% and 25vol%). Finally, a comparison was made between monoporous wicks and biporous wicks for the heat transport capability of the LHP. Experimental results showed that the better parameters of the biporous wick seem to tend to more

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Chen, Zheng-Hong, and 陳政宏. "Loop Heat Pipe Performance Enhancement With Bilayer Wick Structure." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/27544863794839885759.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>99<br>Loop heat pipe (LHP) is a passive two phase heat transfer device, which have ability to transport long-distance, low thermal resistance, and high heat transfer capacity advantages as compared with traditional heat pipe. In recent years, the high heat flux thermal solution requirement follows the electronic device become more powerful and smaller size.LHP developed smaller evaporator size. Therefore, the purpose of this article is to overcome the LHP heat transfer performance decrease sharply when using mono-porous wick in evaporator. In this study, nickel powd

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Hsu, Chao-Hsiang, and 許超翔. "The Radiation and Stagger Loop Heat Pipe Evaporator Design." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/cnd893.

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碩士<br>國立臺北科技大學<br>製造科技研究所<br>94<br>This article is using R-134a as the working fluid to design and produce a loop heat pipe (LHP) with a flat evaporator. It not only sinter the wick structure in single process forming at the bottom of the evaporator, but also strengthen the bottom of the evaporator then improve the disadvantage of hard start-up in the system by vapor backflow into compensation chamber in traditional LHP. Moreover, using radiation type vapor groove can lower flux resistance to increase quantity of vapor cycle, and then lower the thermal resistance. Such cogitation is the point

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Hsu, Chang-Jung, and 許展榕. "Nondimensional Parameters’ Simulation of Open-Loop Pulsating Heat Pipe." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/r6a8at.

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碩士<br>國立臺北科技大學<br>製造科技研究所<br>96<br>This research is to make a description of open-loop pulsating heat pipe’s parameter by using four nondimentional parameterα（energy ratio）,β（density empty ratio）,γ（empty filling ratio）,Rm（mass ratio）.After simulating,we can find no oscillation zone and oscillation zone.In our simulation,α is meaning of internal energy divided by kinetic energy’s ,βis meaning of empty volume ratio divided by density ratio,γis meaning of empty filling ratio divided by filling ratio,Rm is meaning of mass evaporating rate divided by flow rate. In this research,we develop two softw

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Huang, Chun-Ying, and 黃俊穎. "Simulation and Manufacturing of The Miniature Loop Heat Pipe." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/xtbyz6.

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碩士<br>國立臺北科技大學<br>製造科技研究所<br>96<br>This article is to describe that the EES software is developed by myself to simulate the heat-conduction situation of steady-state of a miniature loop heat pipe and to consider its heat-leakage condition. I use software simulation to get the design parameter and the heat load to develop a miniature loop heat pipe, and testify it by our laboratory standard process of thermal resistance measure . According to the result of experiment, we know that this loop heat pipe designed by design parameter from software simulation fits the physical phenomenon under st

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Fu-Rung, Yu, and 余富榮. "Study on Multi-heat Source Management using Three-Dimensional Loop Heat Pipe." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/02218987489554446688.

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碩士<br>國防大學理工學院<br>機械工程碩士班<br>101<br>This research is to pre-develop a new highly adaptable loop heat pipe, which is featured with simplicity in making, high thermal efficiency, and configuration adaptability to the heat source position and heat flux volume, and used to treat three-dimensional multiple heat sources in a limited space. This research uses pressurized gas generated by capillary structure to resist gravity, and in the same conditions uses the bending curvature design to explore the gravity impact on the entire device. In the end, heat sources of different quantities, positions and

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Chan, Chun-Yao, and 詹竣堯. "The Impact of Wick Wettability on Heat Transfer Performance of Loop Heat Pipe." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/93986796337792331094.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>100<br>Loop heat pipe (LHP) is a passive two phase heat transfer device, which has ability to transport heat in long-distance, low thermal resistance, and high heat transfer capacity compared with a traditional heat pipe. During thermal transfer process, the wettability of the wick in the evaporator of LHP has impacts on capillary force, disjoining pressure and evaporative thin film. Then, it could affect the heat transfer performance of LHP significantly. However, the related research about the effect of wettability on LHP’s evaporation still lacks. Therefore, the

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Hsuan, Chuang Yu, and 莊宇軒. "The Effectiveness Analysis of Double Closed-Loop Pulsating Heat Pipe." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/h5atfs.

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WEI, LIN CHIN, and 林金緯. "Radial-type Closed Loop Pulsating Heat Pipe Design and Fabrication." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/96486077280910849802.

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碩士<br>聖約翰科技大學<br>自動化及機電整合研究所<br>97<br>In this paper, in order to create a number of different length and bend the new type of Radial-type closed loop pulsating heat pipe and to analyze its effectiveness; "RCLPHP" is the abbreviation of Radial-type closed loop pulsating heat pipe. The production process of RCLPHP, in addition to do flow visualization to observe the situation, but also joined the different design parameters such as copper pipe and brass pipe (external diameter = 3 mm, internal diameter = 2.5 mm), the number of radiation (8, 10, 12) and radiation length (50mm, 100mm, 150mm) as a

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Chan, Chien-Hsuan, and 詹前軒. "Study on Circulation Flow in Closed Loop Pulsating Heat Pipe." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/61314848247762995792.

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碩士<br>淡江大學<br>機械與機電工程學系碩士班<br>98<br>This research utilized 6 mm outer diameter and 3 mm inner diameter glass tubes to manufacture 9 turns closed loop Pulsating Heat Pipe(PHP) with a total length of 1980mm. For achieving the loop circulation easily, a water cooling system kept at 35 ° C was used as the condenser. The experiment was conducted to evaluate the thermal resistance under different fluid filling ratios (20%, 30%, 40%, 50%, 60%, 70% and 80%), and at a series change of heat inputs (40W, 80W, 120W, 160W, 200W). Through a digital video camera, the visualization experiment was carried out

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Hsu, Chin-Chun, and 許欽淳. "Application of Nanofluids in Fabrication of Micro Loop Heat Pipe." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/47592649691974683658.

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碩士<br>淡江大學<br>機械與機電工程學系<br>92<br>A 60 mm×33 mm×0.8 mm micro loop heat pipe (MLHP), consisting of an evaporator, vapor line, condenser, and two liquid lines, was fabricated and characterized. The wicking structure consists of parallel V-grooves with a hydraulic diameter of 76 m formed using bulk silicon etching. MLHP were realized by bonding a glass wafer onto a silicon substrate, resulting in a transparent cover for two-phase flow observation. Methanol and silver nanofluid were used as the working fluid. The test results showed that silver nanofluid demonstrates a higher heat load

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