Analysis of a new configuration of a vapor compression system with a humidification/ dehumidification process for cooling and desalination

This study analyzes a vapor-compression refrigeration system integrated with humidification–dehumidification for simultaneous cooling and freshwater production. The design utilizes two evaporators at different temperature levels and recovers condenser heat for air reheating. Parametric evaluation considered evaporator and condenser temperatures as well as ambient humidity, using conventional and combined performance indicators. The temperature of Evaporator 1 exerted the strongest influence on cooling capacity, freshwater production, COP, EUF, and exergetic efficiency. Increasing the temperature of Evaporator 2 enhanced cooling and water recovery while reducing compressor power. A higher condenser temperature improved outputs but required greater energy consumption. Elevated ambient humidity further augmented both cooling performance and freshwater production. Within the investigated ranges, the model predicted maximum theoretical values of 5.98 kW for the cooling effect and 14.08 L h − 1 for freshwater production, while the maximum COP, GOR, EUF, and exergetic efficiency were 1.38, 1.14, 1.86, and 2.79%, respectively. At the maximum exergetic efficiency condition, the total exergy destruction was 3.83 kW. Chemical exergy exceeded 90% of the specific exergy in some humid-air and freshwater streams.