Resumo

GOROZABEL CHATA, Francis B.  e  CARBONELL MORALES, Tania. Exergy and energy analysis of a direct expansion solar assisted heat pump. Energética [online]. 2020, vol.41, n.1  Epub 01-Jan-2020. ISSN 1815-5901.

A direct expansion solar assisted heat pump (BCAES-ED) is a water heating technology with great potential in countries located in tropical and humid areas, so it is important to conduct energy and exergy-based analyzes that allow characterization its operation and promote its application in industrial processes. The present study used meteorological parameters that influence an experimental installation located in Portoviejo-Ecuador for a collector / evaporator of 3 and 1.5 m2 and compressor rotation speeds of 400 and 600 rpm. The energy analysis reported a coefficient of performance of the system between 3.5 and 4.5. The compressor obtained the highest value of exergy destruction, followed by the solar collector, the condenser and the expansion valve. The exergy efficiency of the system reached the value of 70%. The feasibility and advantages of using this technology in tropical countries are demonstrated.

Palavras-chave : Heat pump; COP_H; direct expansion; solar energy; exergy.

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