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Air-source heat pump for northern climates. I. Simulation of different heat pump cycles. II. Measurement and verification.

Author(s) : BERTSCH S., GROLL E. A., BOUFFARD D. B., et al.

Summary

Air-source heat pumps are widely used for residential heating because of the 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 summarizes the results of an extended literature and patent review, and presents a theoretical analysis of the three most promising cycles. The second part focuses on the design, implementation, and testing of a breadboard system as well as on the comparisons with commercially available heat pumps.

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Details

  • Original title: Air-source heat pump for northern climates. I. Simulation of different heat pump cycles. II. Measurement and verification.
  • Record ID : 2007-2289
  • Languages: English
  • Source: 2006 Purdue Conferences. 18th International Compressor Engineering Conference at Purdue & 11th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
  • Publication date: 2006/07/17

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