Air Source Heat Pump for Northern Climates Part II: Measurement and Verification
نویسندگان
چکیده
Air source heat pumps are widely used for residential heating because of their relatively low installation costs. Major disadvantages are that the heat output and COP decrease and the discharge temperature of the compressor increases as the outdoor temperature decreases. All of these factors usually lead to the need of combined heat pump and backup heating systems, which increases the cost and lowers the efficiency of the overall system. In this study, a novel air-source, two-stage heat pump using R-410A as the refrigerant was simulated, designed, constructed and tested for ambient temperatures as low as -30°C and supply temperatures of up to 50°C. In addition to air and water heating, the system is also able to provide sufficient air conditioning in cooling mode. The study is divided into two parts. The first part entitled “Simulation of Different Heat Pump Cycles” summarizes the results of an extended literature and patent review, and presents a theoretical analysis of the three most promising cycles. The second part is entitled “Measurement and Verification” and focuses on the design, implementation, and testing of a breadboard system as well as on the comparisons with commercially available heat pumps.
منابع مشابه
Air Source Heat Pump for Northern Climates Part I: Simulation of Different Heat Pump Cycles
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