Thermodynamic analysis of a modified two-stage trans-critical CO2 refrigeration cycle with multi inter-cooling system

چکیده مقاله

Abstract: Performance of a two-stage multi-inter-cooling trans-critical CO2 refrigeration cycle containing internal heat exchanger, two intercoolers, ejector, and separator, has been analyzed after modification. In the present study, an internal heat exchanger has been included within this cycle for possible improvement in its cooling performance. The impacts of operational parameters such as gas cooler and evaporator temperatures and pressure of gas cooler, on cycle performance have been investigated. Obtained results showed that modified cycle improved the maximum coefficient of performance (COP max), by 20.58% compared to the internal heat exchanger two-stage TRCC cycle and 23.2% compared