Performance Analysis of OTEC cycle on working fluid

Abstract

It has been found that chlorofluorocarbon (CFCs) and hydrochlorofluorocarbon (HCFCs), hich have been used since 1930, cause ozone layer depletion owing to their strong thermodynamics characteristics. Series of CFC and HCFC refrigerants have been regulated by the Montreal Protocol. Therefore, there is an urgent need to develop an alternative refrigerant to mitigate the problem of ozone layer depletion. Ocean hermal Energy Conversion (OTEC) is a technique that uses the temperature differential between surface eawater and deep seawater in order to generate electrical energy, and has the advantage of stable electricity ower production. Working fluid of the OTEC used ammonia or HCFCs such as R22. Ammonia has the best hermodynamic qualities and produces the most output under similar conditions. However, Ammonia is corrosive nd flammable when exposed to the atmosphere. Other alternative work fluids can be considered. And CFCs has ODP problem. So, this can be achieved in two ways: development of a new refrigerant and development of mixed refrigerants. This study investigated the performance characteristics of ocean thermal energy conversion (OTEC) cycles when using existing mixed refrigerants for OTEC. Among the various available mixed refrigerants, R32/R152a and R32/R134a are used even in OTEC systems. For our simulations, R32/R152a and R32/R134a was used in the existing closed cycle. The temperature of the warm heat soe been regulated by the Montreal Protocol. Therefore, there is an urgent need to develop an alternative refrigerant to mitigate the problem of ozone layer depletion. Ocean hermal Energy Conversion (OTEC) is a technique that uses the temperature differential between surface eawater and deep seawater in order to generate electrical energy, and has the advantage of stable electricity ower production. Working fluid of the OTEC used ammonia or HCFCs such as R22. Ammonia has the best hermodynamic qualities and produces the most output under similar conditions. However, Ammonia is corrosive nd flammable when exposed to the atmosphere. Other alternative work fluids can be considered. And CFCs has ODP problem. So, this can be achieved in two ways: development of a new refrigerant and development of mixed refrigerants. This study investigated the performance characteristics of ocean thermal energy conversion (OTEC) cycles when using existing mixed refrigerants for OTEC. Among the various available mixed refrigerants, R32/R152a and R32/R134a are used even in OTEC systems. For our simulations, R32/R152a and R32/R134a was used in the existing closed cycle. The temperature of the warm heat so