Performance demonstration of hydrogen advanced loop heat pipe for 20-30K cryocooling of far infrared sensors

Hoang, Triem T.; O’Connell, Tamara; Ku, Jentung; Butler, C. D.; Swanson, Theodore D.

doi:10.1117/12.618318

Cited by 8 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An optimization of the system to minimize its mass and volume was performed for future space applications, and further results were reported in Ref. [11]. Of particular note that all CLHPs introduced in Refs.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Parametric analysis of steady-state operation of a CLHP

Bai

Lin

Wen

2010

Applied Thermal Engineering

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

“…Of particular note that all CLHPs introduced in Refs. [8][9][10][11] employed auxiliary loops to realize the large temperature drop of the primary evaporator during the supercritical startup process, and this method has a good effect in both terrestrial and space surroundings. Refs.…”

Section: Introductionmentioning

confidence: 99%

Parametric analysis of steady-state operation of a CLHP

Bai

Lin

Wen

2010

Applied Thermal Engineering

View full text Add to dashboard Cite

“…An important example for the CLHP applications is in the thermal control of the space infrared exploration system where the infrared sensors/detectors have to be maintained at 80-100 K or even lower temperatures [14,15].…”

Section: Introductionmentioning

confidence: 99%

“…The CLHP could realize the supercritical startup with a heat load of 2.5W applied to the secondary evaporator when the shroud temperature was 200K; however, a supercritical startup failure occurred in a 298K environment due to large parasitic heat load. The CLHP could operate at a temperature range of 20-30K, and a maximum heat transport capability of 10W over a transport distance of 2.5m was obtained with a 80K shroud [15]. To solve important problems in cryogenic integration, Bugby et al [24,25] developed three CLHPs: an across-gimbal CLHP, a short and a long transport length miniaturized CLHP.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the supercritical startup of cryogenic loop heat pipes with redundancy design

Guo

Lin

Bai

et al. 2016

Energy Conversion and Management

View full text Add to dashboard Cite

Abstract:Cryogenic loop heat pipe (CLHP) is one of the key components in the future space infrared 10 exploration system, which enables effective and efficient cryogenic heat transport over a long distance with a 11 flexible thermal link. To realize reliable and long life operation, a CLHP-based thermal control system with 12 redundancy design was proposed in this work, where two nitrogen-charged CLHPs were employed to provide 13 cryocooling at 80-100K. This study focused on the supercritical startup of the CLHPs with redundancy design, 14and an extensive experimental study under four possible working modes was conducted. Experimental results 15showed that with 2.5W applied to the secondary evaporator, each CLHP could realize the supercritical startup 16 successfully in the normal working mode; however, the required time differed a lot because the difference in the 17 transport line diameter significantly affected the cryocooling capacity to the primary evaporator. In the backup 18 conversion mode, instant switch of the two primary evaporators may cause an operation failure, and an auxiliary 19 operation of the secondary evaporator in advance was necessary to make the primary liquid line filled with liquid. 20In the malfunction conversion mode, the simulated infrared detector had to be first shut down, but the time needed 21 for the backup CLHP to realize the supercritical startup became obviously shorter than that in the normal working 22 mode, because the primary evaporator of the backup CLHP was always in a cryogenic state. In the dual operation 23 mode, the two CLHPs could realize the supercritical startup simultaneously, but a temperature oscillation 24 phenomenon was observed, which can be eliminated by increasing the heat load applied to the secondary 25 evaporator. 26

show abstract