Comparison of OTEC cycle by Various Refrigerant

Abstract

OTEC is using a phase change of the refrigerant. It is converted to the low-temperature thermal energy into kinetic energy and kinetic energy is converted into electrical energy. Thus, depending on use of any refrigerant, there occurs a difference between the output and the system efficiency. At present, the OTEC application or kind of the refrigerant in the study as an AMMONIA, R22, R32, R134a and the like, and the application can vary according to the characteristics and research of the system. In this paper, refrigerant of a heat source used in existing AMMONIA, R32, R22, R134a were conducted using the system performance changes in accordance with various heat sink temperature. System was designed to basic model closed-cycle the program used in the design was used HYSYS program. That temperature was applied to the surface water temperature of the Pacific Ocean 30 ℃, changes in heat sink temperature 5 ℃, 8 ℃, 10 ℃, was applied to 12 ℃.ference between the output and the system efficiency. At present, the OTEC application or kind of the refrigerant in the study as an AMMONIA, R22, R32, R134a and the like, and the application can vary according to the characteristics and research of the system. In this paper, refrigerant of a heat source used in existing AMMONIA, R32, R22, R134a were conducted using the system performance changes in accordance with various heat sink temperature. System was designed to basic model closed-cycle the program used in the design was used HYSYS program. That temperature was applied to the surface water temperature of the Pacific Ocean 30 ℃, changes in heat sink temperature 5 ℃, 8 ℃, 10 ℃, was applied to 12 ℃.