Abstract
The paper seeks the optimal configuration of equipment capable of generating heat and cold. For the generation of the two products, for the first time it is considered a coupled system heat pump and refrigeration system. Waste heat from an industrial process is used as the heat source for the heat pump cycle. For the refrigeration system, carbon dioxide is used as the working agent, and for the heat pump the working agent R152a. In order to identify the malfunctions at the level of each device and process, an exergy analysis is used, which identifies the magnitude and location of each malfunction. Based on the information provided by the exergy analysis, it is considered a structural optimization strategy by applying sub-cooling to the refrigeration cycle and heat pump cycle. The analysis shows an increase in the performance indices COPen and COPex when applying the subcooling at the level of the refrigeration cycle. The results of the exergy analysis make it possible to find solutions for improving the functional structure and design of equipment.
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