Thermodynamic analysis of a CO2–propylene based transcritical
cascade system have been carried out in the present study using
Engineering equation solver commercial version 6.883. In the
study variation of three important design parameters i.e. gas cooler
outlet temperature TC, evaporating temperature TE and overlap
temperature in cascade heat exchanger is considered in order to
determine system COP, optimum temperature in cascade heat
exchanger and optimum mass flow ratio of LT and HT cycles. The
following inferences are drawn from the study