Basics of Loop Heat Pipe Temperature Control

Paper #:
  • 1999-01-2012

Published:
  • 1999-07-12
Citation:
Nikitkin, M., Kotlyarov, E., and Serov, G., "Basics of Loop Heat Pipe Temperature Control," SAE Technical Paper 1999-01-2012, 1999, https://doi.org/10.4271/1999-01-2012.
Pages:
9
Abstract:
Modern spacecraft are using Loop Heat Pipes (LHP) more frequently. However, there are no practical guidelines to help LHP users know how and when to use the active temperature control. Most spacecraft payloads and instruments must operate in a required, sometimes-narrow temperature range. Outside this temperature band the instruments either operate poorly or cease to operate. Radiator (sink) sizing can set the maximum permissible operating temperature, and active temperature control devices (TCD) provide lower margin of operation temperature. The LHP is a component of the spacecraft thermal control system, which, in most cases, functions as a system; therefore, LHP operation requires special consideration when using TCDs.It is shown that two major groups of TCD devices exist. The classification is based on the mechanism TCDs use to control the LHP temperature. A simple classification of different ways to control the temperature of LHP is presented. Basic physical principles and modes of operation for different types of active temperature control devices are discussed in the paper. Pros and cons of different types of TCD devices for different practical applications are highlighted and discussed.The detailed explanation, description and examples of the LHP temperature control approaches are presented in the paper. Some basic equations that allow prediction of power consumption for control are given for the thermal TCD approach.In conclusion, this paper presents the easy-to-use criteria for estimating the efficiency and quality of a LHP control approach.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Training / Education
2018-02-05
Book
2008-07-01
Standard
2013-12-05
Standard
1994-03-01
Training / Education
2017-06-15
Technical Paper / Journal Article
2010-10-25
Technical Paper / Journal Article
2011-04-12
Training / Education
2017-12-18
Book
2008-01-01