Application of Ammonia and Carbon Dioxide Thermodynamics to a Cascade Refrigeration System

Abstract

By analyzing the system's thermodynamics using R744-R717 and certain design factors, the condensing temperature of a cascade refrigeration system may be determined. The effects of carbon dioxide cooling in a low-temperature circuit (R744) and ammonia cooling in a high-temperature circuit (R717) are investigated. Using regression analysis, we looked at how different values of COP and TC may be related to one another. Several optimization strategies have the potential to improve refrigeration systems.