transient numerical simulation on the performance of a neon-charged cryogenic loop heat pipe for space application
- Paper number
IAC-18,A2,2,10,x45378
- Author
Mr. Falong He, China, National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences.
- Coauthor
Ms. Wang-Fang Du, China, Institute of Mechanics, Chinese Academy of Sciences
- Coauthor
Prof.Dr. Jianfu Zhao, China, National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences.
- Coauthor
Dr. Yueyong Chen, China, Beijing Spacecrafts China Academy of Space Technology (CAST)
- Coauthor
Dr. Jiang He, China, Chinese Academy of Space Technology
- Coauthor
Dr. Zhang Hongxing, China, China Academy of Space Technology (CAST)
- Coauthor
Mr. Jianyin MIAO, China, Beijing Institute of Spacecraft System Engineering, China Academy of Space Technology
- Year
2018
- Abstract
A transient mathematical model for cryogenic loop heat pipe (CLHP), which possesses high pumping capability and good heat transfer performance that are important for effective and efficient cryogenic heat transport with considerable applications in space and terrestrial surroundings, is established and used to study the performance of a neon-charged CLHP (Ne-CLHP) in the present work. The numerical results are benchmarked with experimental data and a good agreement is achieved. The effects of parasitic heat loss, charged pressure of the working fluid, and heat sink temperature on the performance of the Ne-CLHP are conducted under a constant heat loads applied to the secondary evaporator (1.5 W), which is selected based on the previous experimental study. Based on the numerical results, it is found that the heat sink temperature affects slightly the resistance loss of the system, but markedly the wall temperature of primary evaporator and the maximum heat transport capability. There existed an optimum charged pressure of the working fluid to achieve the maximum heat transport capability. The detailed temperature and pressure characteristics of the Ne-CLHP are also captured which can provide a better understanding of the inherent mechanisms responsible for the phenomena and then provide guidance for the design and optimization of Ne-CLHPs, which can realize efficient cryogenic heat transport in the temperature range of 30–40 K, and promises great application potential in the thermal control of future space infrared exploration system.
- Abstract document
- Manuscript document
IAC-18,A2,2,10,x45378.pdf (🔒 authorized access only).
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