A Study on the Performance of a Cascade Heat Pump for Generating Hot Water

Samuel Boahen and Jong Min Choi
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Samuel Boahen: Graduate School of Mechanical Engineering, Hanbat National University, Daejeon 34158, Korea
Jong Min Choi: Department of Mechanical Engineering, Hanbat National University, Daejeon 34158, Korea

Energies, 2019, vol. 12, issue 22, 1-20

Abstract: The use of cascade heat pumps for hot water generation has gained much attention in recent times. The big question that has attracted much research interest is how to enhance the performance and energy saving potential of these cascade heat pumps. This study therefore proposed a new cycle to enhance performance of the cascade heat pump by adopting an auxiliary heat exchanger (AHX) in desuperheater, heater and parallel positions at the low stage (LS) side. The new cascade cycle with AHX in desuperheater position was found to have better performance than that with AHX at heater and parallel positions. Compared to the conventional cycle, heating capacity and coefficient of performance ( COP ) of the new cascade cycle with AHX in desuperheater position increased up to 7.4% and 14.9% respectively.

Keywords: cascade heat pump; heating capacity; COP; hot water (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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