Simulation studies on gax based Kalina cycle for both power and cooling applications

A detailed parametric analysis is carried out on both simple and GAX based combined power and cooling cycle. The effect of various parameters such as heat source temperature, refrigeration temperature, sink temperature, split ratio (refrigerant flow ratio between power and cooling systems), split factor (solution flow ratio between absorber and GAX heat exchanger) on the performance of the cycle is studied. The results of the analysis show that using the GAX heat exchanger about 20% of internal heat is recovered within the cycle. The optimum split factor is 0.8–0.9 and the split ratio is 0.5:0.5. The maximum combined thermal efficiency of 35–45% and coefficient of performance of about 0.35 is attained at the optimum conditions.

► A GAX based combined power and cooling cycle has been simulated.
► 20% of the internal heat is recovered by the GAX heat exchangers.
► The optimum split factor and split ratio are 0.8–0.9 and 0.5:0.5 respectively.
► A maximum combined thermal efficiency of 35–45% has been obtained at the optimum conditions.