Thermodynamic analysis of a novel GAX absorption refrigeration cycle

A novel GAX absorption refrigeration cycle is proposed in this paper. Part of the solution out from water cooled absorber flows to a refrigerant cooled absorber to absorb part of the vapor out from evaporator. The refrigerant cooled absorber is cooled by refrigerant which evaporates at an intermediate pressure. The vapor at intermediate pressure is absorbed by the solution out from refrigerant cooled absorber in a high pressure absorber. The proposed cycle can make use of the absorption heat that can not be utilized by standard GAX cycle to make additional refrigeration. Therefore, the COP of the proposed cycle is much higher than that of the standard GAX (SGAX) cycle. Simulation results show that the COP of the proposed cycle is 20% higher than that of SGAX cycle at most simulated conditions.