A novel compression-assisted decomposition chemisorption refrigeration system is proposed to reduce the desorption pressure and temperature and increase the suction pressure of the compressor

which may contribute to the reduction of the power consumption of the compressor and increase the coefficient of performance (COP) of the system. A solidified composite sorbent performance test platform was built

which used ammonia as the refrigerant

and strontium chloride with expanded natural graphite treated with sulfuric acid was used as the sorbent. The decomposition and sorption reactions of the composite sorbents were tested under different working conditions. The results demonstrate that the novel system decomposed at the heat source temperature of 70–90 ℃. At an evaporation temperature of ?10 ℃ and a heat source temperature of 90 ℃

the optimal desorption pressure of the novel system was 0.62 MPa. The compressor pressure ratio was 2.60. The COP of the novel system was 5.21

which is 74% higher than that of traditional vapor compression refrigeration systems.