بهينه سازي ترمواكونوميك و تحليل اكسرژي چرخه ي تبريد تراكمي بخار

THERMOECONOMICAL OPTIMIZATION AND EXERGY ANALYSIS OF A VAPOR COMPRESSION REFRIGERATION CYCLE

In the present work, a thermoeconomical optimization approach is applied to a vapor compression refrigera­tion system. The cooling load and the outdoor and in­door temperatures are considered as constraints in this optimization procedure. Two optimization parameters are considered in this analysis. The first one is the dif­ference between condensation temperature and outdoor temperature, which fixes the condensation pressure. The difference between evaporation temperature and indoor temperature is considered as the second optimization pa­rameter, which, in turn, fixes the evaporation pressure. The objective function is a cost function, which is the sum of the exergy input costs and the capital costs. The analysis shows that optimum cycle parameters may be found by a trade-off between the compression cost and other costs, including those for heat exchangers, fans and the input power of the fans.