为既能提高航天器排热能力,又能降低排热系统质量,提出了单相流体回路、蓄冷单相流体回路、热泵单相流体回路、蓄冷热泵回路4种排热方案,计算了各方案排热能力和系统质量构成。与单相流体回路相比,在给定条件下,采用蓄冷热泵回路可减少辐射器面积69.9%,降低排热系统质量53.5%。而蓄冷单相流体回路可减少辐射器面积56.0%,降低排热系统质量48.8%。结果表明:蓄冷方案可以有效解决航天器短时大排热功率问题。 In order to improve both the heat rejection capacity of the spacecraft and the quality of the heat rejection system, four heat removal schemes of single-phase fluid circuit, cold-storage single-phase fluid circuit, heat pump single-phase fluid circuit and cold storage heat pump circuit are proposed. Heat removal capacity and quality of the system. Compared with single-phase fluid circuit, under the given conditions, the use of cold storage heat pump circuit can reduce the radiator area of ​​69.9%, reducing the quality of the exhaust system 53.5%. The cold storage single-phase fluid circuit can reduce the radiator area of ​​56.0%, reducing the quality of the heat release system 48.8%. The results show that the cold storage scheme can effectively solve the short-time heat rejection of spacecraft.