Operating Characteristics of Loop Heat Pipes

Paper #:
  • 1999-01-2007

Published:
  • 1999-07-12
Citation:
Ku, J., "Operating Characteristics of Loop Heat Pipes," SAE Technical Paper 1999-01-2007, 1999, https://doi.org/10.4271/1999-01-2007.
Author(s):
Pages:
19
Abstract:
The loop heat pipe (LHP) was invented in Russia in the early 1980’s. It is a two-phase heat transfer device that utilizes the evaporation and condensation of a working fluid to transfer heat, and the capillary forces developed in fine porous wicks to circulate the fluid. The LHP is known for its high pumping capability and robust operation because it uses fine-pored metal wicks and the integral evaporator/hydro-accumulator design. It has gained rapid acceptance in recent years as a thermal control device in space applications. This paper presents an overview of the LHP operation. The physical processes and the thermal-hydraulic behaviors of the LHP are first described. Operating characteristics as functions of various parameters including the heat load, sink temperature, ambient temperature, and elevation are presented. Peculiar behaviors in LHP operation such as temperature hysteresis and temperature overshoot during start-up are explained. Issues related to multiple-evaporator LHP’s are also addressed.
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
2017-12-18
Training / Education
2018-02-05
Technical Paper / Journal Article
2010-10-25
Standard
1994-03-01
Training / Education
2017-06-15
Book
2008-07-01
Book
2008-01-01
Technical Paper / Journal Article
2011-04-12