Multi-Purpose High-Performance CO<sub>2</sub> Refrigerant Refrigeration System Design

Sattar Z. T. S., Aktaş M., Güven Y., Bahar E. M.

JOURNAL OF POLYTECHNIC-POLITEKNIK DERGISI, cilt.28, sa.3, 2025 (ESCI, TRDizin)

Özet

Increasing energy consumption and greenhouse gas emissions are causing serious environmental problems. Environmentally friendly refrigerants must be used to achieve energy efficiency while reducing environmental concerns. Carbon dioxide, a natural refrigerant, plays a major role. In this study, a two-stage ejector carbon dioxide refrigerant refrigeration system is designed. The designed refrigeration system was intended for heating and medium and low-temperature refrigeration processes. Water and refrigerant circulation system was used for heating and refrigeration of the heating and refrigeration chambers. Using a gas cooler for heating, a heating capacity of 99.66 kW was obtained at a temperature of 144.3 degrees C, and the COP value was calculated as 1.2 6. For the refrigeration process, a refrigeration capacity of 165,56 kW was obtained at- 30 degrees C in the evaporator section, and the COP value was calculated as 2.11. In the designed refrigeration system, the power consumed by the compressor was calculated as 79.08 kW, and a capacity of 265.22 kW was obtained in heating and refrigeration processes. This shows that a dual coefficient of performance of 3.38 was obtained.