Solid particle radiator systems for heat rejection in space

Abstract

The radiator for the heat rejected in space proposes a new technological solution which utilizes a stream of solid particle to radiate waste heat. This paper presents the concept of Solid particle radiator (SPR) and highlights the distinctive characteristics of SPR and the Liquid droplet radiator (LDR). The design model of the solid particle radiator system was established and evaluated from the view point of reducing the rate of mass per unit power, avoiding the contamination due to the loss via evaporation and enhancing the efficiency of heat transfer. And the radiating temperature of this system could range to a large extent in the case of without considering evaporation loss. The mass model of system was presented here, and the evaluation parameters were used to analyze the performance of SPR in the different conditions. When compared with the performance of the liquid droplet radiator under the same condition of different mediums and Heat Pipe radiator, the SPR manifests the differences in the variations of thermal load, mission time and other design parameters of the system. Finally, this radiator exhibits the significant potential of substituting for the conventional radiator and the LDR in space according to the calculation results. Thus, the Solid particle radiator could be employed for a wide range of heat rejection applications in space.