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Performance Study on Solar Assisted Heat Pump Water Heater Using CO2 in a Transcritical Cycle

Posted by Content Coordinator on Tuesday, February 7th, 2012



This study reports the numerical analyses of a CO2 transcritical cycle on solar assisted heat pump water heating system in which evacuated tube U-pipe solar collector is utilized as an evaporator. This simulation model can predict operating characteristics for moderate meteorological conditions of North Dakota. The main purpose of this work is to simulate the overall performance of the heat pump cycle by varying compressor speed. From the analysis the coefficient of performance (COP) value is predicted from 1.5 – 2.8 with three different average solar insolation. The results showed that the performance of the system significantly influenced by the compressor speed and solar irradiation. This study also calculated the instantaneous collector efficiency and found in the range of 50 – 55%.

Download Full Study (PDF): Performance Study on Solar Assisted Heat Pump Water Heater Using CO2 in a Transcritical Cycle

About The North Dakota State University Green Computing and Communications Laboratory

“The NDSU-CIIT Green Computing and Communications Laboratory (GCC Lab) is an initiative to bring together the faculty, staff, and students of the North Dakota State University and COMSATS Institute of Information Technology to conduct research on making computing and communications, energy-efficient. “

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