Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
Heat Pipe Science and Technology, An International Journal

ISSN Imprimir: 2151-7975
ISSN On-line: 2151-7991

Archives: Volume 1, 2010 to Volume 8, 2017

Heat Pipe Science and Technology, An International Journal

DOI: 10.1615/HeatPipeScieTech.v1.i1.10
pages 1-18

DEPLOYABLE RADIATOR QUALIFICATION

Konstantin Goncharov
Federal State Unitary Enterprise "Scientific Production Association named after S. A. Lavochkin", 24 Leningradskoe Highway, Khimki, Moscow region, Russia
O. Golovin
TAIS (Thermal Aggregates and Systems) Ltd., Russia
M. Balykin
TAIS (Thermal Aggregates and Systems) Ltd., Russia
A. Kochetkov
TAIS (Thermal Aggregates and Systems) Ltd., Russia

RESUMO

In 2004-2006 the engineering model of a deploy able radiator based on a loop heat pipe (LHP) was developed. It was designed for qualification tests.
Application of ammonia as the LHP working fluid is attributable to its high thermal physical properties. However, the freezing temperature of ammonia is minus 77° C. This fact impedes the application of ammonia when the operating temperatures of the LHP radiator are lower than this value. Application of other working fluids with lower freezing temperatures (propylene, for example) leads to a rather substantial decrease in the heat power transferred or increase in the LHP dimensions and mass, which is not acceptable in many cases.
An important problem to be solved for ammonia LHP application is the recovery of the LHP operating capacity after the freezing of a working fluid in a radiator-condenser. To recover the working fluid circulation in an LHP, it is necessary to defreeze the entire LHP. During multiple freezing/melting cycles of the LHP working fluid, the LHP depressurization may occur. This paper is devoted to solving some aspects of the recovery of the radiator operating capacity after freezing.
The aspects of passive temperature control of the LHP evaporator using a pressure regulator and the aspects of the LHP active temperature control using heaters and Peltier elements mounted in the compensation chamber are also considered in this paper.
The development of new key components made it possible to design a deployable radiator with a specific mass of less than 10 kg/kW. The deployable radiator parameters are described in the paper.


Articles with similar content:

Transient Analysis Of All Steam Generators Feed Valve Stuck Open For 700 MWe IPHWRs
Proceedings of the 25th National and 3rd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2019), Vol.0, 2019, issue
S. Phani Krishna, Mukesh Singhal, S. Hajela, Santanu Pahari
THERMAL PERFORMANCE AND DEVELOPMENT OF A DUAL EVAPORATOR LOOP HEAT PIPE
Heat Pipe Science and Technology, An International Journal, Vol.4, 2013, issue 1-2
Roger R. Riehl
ANALYSIS OF THE VALVE-TIMING EFFECT ON THE PERFORMANCE OF A 4.2K GIFFORD-MCMAHON REFRIGERATOR
Proceedings of Symposium on Energy Engineering in the 21st Century (SEE2000) Volume I-IV, Vol.0, 2000, issue
Ling-hui Gong, Liang Zhang, Xiang-dong Xu
AUTOMATED CHARGING OF EMBEDDED HEAT PIPE SYSTEMS
Heat Pipe Science and Technology, An International Journal, Vol.3, 2012, issue 2-4
Wessel W. Wits, Gert Jan te Riele, Johannes van Es
SET-POINT ACTIVE CONTROL OF VAPOR-MODULATED LOOP HEAT PIPE
Heat Pipe Science and Technology, An International Journal, Vol.3, 2012, issue 2-4
Javier Corrochano, Donatas Mishkinis, Alejandro Torres, Francisco Romera, Tarik Kaya