Vapor Compression Cycles for High Component Heat Loads on Next-Generation Small Satellites

International Conference on Compressors and their Systems 2019

Brendel, Leon P. M.^1 ; Hengeveld, Derek^2 ; Braun, James E^1 ; Groll, Eckhard A^1

Ray W. Herrick Laboratories, School of Mechanical Engineering, Purdue University, West Lafayette

47907-2099, United States^1

LoadPath, Albuquerque

NM

87106, United States^2

关键词: Analytical equations;    Figure of merits;    High heat load;    Radiative heat transfer;    Second law efficiencies;    Vapor compression cooling;    Vapor compression cycle;    Wide spreads;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/604/1/012036/pdf
DOI  :  10.1088/1757-899X/604/1/012036

来源: IOP

【 摘 要 】

High-power small satellites (SmallSats) have the potential to provide new and advanced capabilities; however, significant challenges prevent wide-spread use. Of these challenges, thermal management of high heat loads is most significant. This paper evaluates vapor compression cycles (VCCs) as a thermal management solution to increase the maximum component heat load at a fixed radiator area. The VCC with radiative heat transfer as a heat sink is described with analytical equations that couple the required compressor work input for a desired additional component heat load for a given second law efficiency. A figure of merit is defined. In a case study, the results of the equations are compared to a numerically modelled vapor compression cycle. Challenges for a realization of vapor compression cooling on-board SmallSats are pointed out.