Abstract:

In this study, the exergy costs of the cooling system processes were calculated by determining the performance of a vapour compression cooling system, whose seawater inlet temperature to the condenser was taken as the research parameter, using exergoeconomic analysis method. Seawater temperatures were measured as 20.5 oC, 24.5 oC and 29.5 oC and R22 was used as the refrigerant in the cooling system. The cost of exergy destruction in each element of the vapor compression refrigeration system was calculated by the exergoeconomic analysis method. The exergoeconomic analysis results showed that the exergy destruction cost of the R22 refrigerant in the condenser is at the highest level in the condensation process. It has been observed that the economic criteria of the condenser in the cooling system of the ship where the study was carried out improves as the sea water temperature entering the condenser increases. When system components are evaluated in terms of monetary costs, it has been found that the compressor is the costliest component. When the system components were evaluated in terms of exergy destruction costs, it was calculated respectively as 0.2552 ($/hour), 0.2519 ($/hour), 0.0527 ($/hour), 0.0288 ($/hour) for the condenser, compressor, LT evaporator and MT evaporator. According to this result, it was found that the condenser operating performance should be improved, or the condenser should be renewed in order to improve the system performance. It was calculated that among the components, the condenser had the highest exergy destruction cost due to its value of 0.2552 $/hour per.

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