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Influence of gas reservoir volume on the secondary heat load required for cryogenic loop heat pipe startup. 

Auteurs : ZHAO C., HUA L., LI N., LI B., YANG B., JIANG Z.

Type d'article : Article de la RIF

Résumé

Cryogenic loop heat pipes (CLHPs) have become an integral component of the thermal transport systems of many spacecrafts. To reduce system pressure and ensure reliable startup, gas reservoir volumes are conventionally designed to be 10 - 100 times the total volume of remaining parts. However, our previous theoretical analysis established the design criteria for the gas reservoir volume and demonstrated that such a large gas reservoir is unnecessary. Therefore, this paper further quantifies the influence of gas reservoir volume on the minimum secondary heat load required for primary loop precooling during startup. The minimum secondary heat load for CLHP startup was obtained experimentally for four gas reservoir volumes (100 mL, 200 mL, 500 mL and 1000 mL) and four heat sink temperatures (170 K, 190 K, 210 K and 230 K). The experimental results suggest that, as the volume of the gas reservoir decreases, the conditions necessary for CLHP activation become more stringent and the minimum secondary heat load required for primary loop precooling increases. Therefore, subject to the constraints of available heating power resources, minimizing the gas reservoir volume enables a lightweight CLHP design. This facilitates the expansion of the CLHP applications for satellite mission and holds significant importance for enhancing the proportion of satellite payload capacity.

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Format PDF

Pages : 10

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    20 €

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Détails

  • Titre original : Influence of gas reservoir volume on the secondary heat load required for cryogenic loop heat pipe startup. 
  • Identifiant de la fiche : 30034940
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 187
  • Date d'édition : 07/2026
  • DOI : http://dx.doi.org/https://doi.org/10.1016/j.ijrefrig.2026.106942

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