امکان‌سنجی استفاده از مبدل بازیاب حرارت در سیکل تبرید تراکمی بخار با آنالیز ترمودینامیکی، انتقال حرارت و اقتصادی

Usually, it is common to use the internal heat exchanger subcooler-superheater after the condenser and before the expansion valve in the compression refrigeration cycles. In this study, the effect of the heat exchanger is evaluated by using recovery heat exchanger after the compressor and before the condenser. To this end, the vapor compression refrigeration cycle with conventional heat exchanger thermaly and economically is analyzed by using R134a, R1234ze, R1234yf and isotropic R507A refrigerants. The simulated compression refrigeration has low capacity, and the condenser and the evaporator heat exchangers such as household refrigerators are air-cooled by natural convection of air. The findings show that the use of the recovery heat exchanger in the compression refrigeration cycle has resulted in a significant reduction the total amount of heat exchangers’ required area and the total cost function in the cycle. Also, R1234yf refrigerant has demonstrated the greatest decrease in the total heat exchangers required area in the cycle and in the total cost of the system. It is, thus, recommended to use R1234yf refrigerants in compression refrigeration cycles instead of R134a ones.