Abstract
A combined cold and power system with an integrated advanced adiabatic compressed air energy storage system and double-effect compression-absorption refrigeration using [mmim]DMP/CH3OH as working fluid (CACAR) was proposed. The CACAR system can use the heat generated by the compression process and the cooling capacity generated by the expansion of compressed air. The dynamic mathematical model of the CACAR system was built based on the mass conservation, energy conservation, and entropy equation of each component. The verification of the compressor, expander, air tank, and Compression absorption refrigeration (CAR) were partly implemented to validate the proposed model. The energy balance of the proposed system was confirmed. The exergy losses of each component were calculated and analyzed. The proposed model have been verified to obey the first and second laws of thermodynamics. The transient characteristics of the expansion process were simulated and discussed. Based on the sensitivity analysis results, the four key operating parameters were optimized using the multi-objective and multiparameter methods. The optimum parameter combination of γ and T37 of the refrigeration system is found to be (1.503, 342.21 Κ). The energy efficiency of the CACAR system was at least 14.97% higher than that of the AA-CAES system.
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