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Revista mexicana de ingeniería química

versão impressa ISSN 1665-2738

Resumo

LUGO-LEYTE, R. et al. Exergoeconomic operation cost analysis to theoretical compression refrigeration cycle of HFC-134a. Rev. Mex. Ing. Quím [online]. 2013, vol.12, n.2, pp.361-370. ISSN 1665-2738.

In this paper, a thermodynamic analysis and an exergoeconomic analysis were applied to vapor compression refrigeration cycle with refrigerant HFC-134a. The thermodynamics properties of the each state of the system were calculated and a parametric; analysis of the coefficient of performance, the exergetic efficiency, the power input to the compressor and the mass flow rate of HFC-134a was performed for a given refrigeration capacity. The productive structure of the equipment of the system was generated; in addition, an exergoeconomics analysis was made. We obtained the resources, products and the irreversibilities of each equipment, the exergetic operation cost and the exergoeconomicr operation cost in function of the environmental temperature and the refrigerated spaced temperature. For the Mexican Republic, the variation of the environmental temperature ranged between 20o C and 35oC in average. For this interval of temperatures and atmospheric pressure of 1 bar, refrigerated spaced temperature of -5oC and for a refrigeration capacity of 5 TR, the coefficient; of performance of the refrigeration cycle was 6.5 to 4, the exergetic efficiency was 4-91 to 30%, the exergetic operation cost was 4.5 to 10 kW and the exergoeconomic operation cost was 3.7 to 8.5 $/hr.

Palavras-chave : operation cost; exergoeconomic; exergetic efficiency; coefficient performance; refrigeration system.

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