Solid sorption cooler with composite sorbent bed and heat pipe thermal control

Three adsorbers cooler was experimentally investigated. Ammonia was chosen as a working fluid. Two adsorbers (twins) were filled with the same complex compound (activated carbon fibre with MnCl2 microcrystals on the filament surface). The third low temperature adsorber had second complex compound (activated carbon fibre with BaCl2 microcrystals on the filament surface). The cycle of physical adsorption and chemical reactions in the sorbent bed of adsorber was followed with condensation/evaporation of ammonia inside the pores of the sorbent material. The specific feature of the third adsorber is the time of its cold generation. It is the sum of the liquid evaporation time and the time of desorption/regeneration of ammonia in the sorbent bed. This is a novelty of cooler design, which increases the heat and cold generation capacity and rate. The cooler thermal management is based on vapordynamic thermosyphons. The solar heat is the source of energy of cooler. The sink of the cold is the air flow.