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Generalized COP estimation of heat pump processes for operation off the design point of equipment.

Number: pap. n. 648

Author(s) : OMMEN T., JENSEN J., MEESENBURG W., et al.

Summary

Heat pumps (HPs) and their individual components experience a significant share of operation away from the design point, due to both sink and source temperature variations as well as operation at part load. In the present study, we expand a generalized HP COP estimation for design conditions to include the performance of conditions within the typical limits for the operating range. The estimation was compared to results based on detailed thermodynamic models of two representative HP installations, of different size and design temperatures. The considered configurations include a 14 kW R134a one-stage cycle and an 800 kW two-stage ammonia heat pump. Based on the design point COP estimation, and five linearized off-design contributions, the performance estimation of COP showed a maximum deviation of 8 %.

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Details

  • Original title: Generalized COP estimation of heat pump processes for operation off the design point of equipment.
  • Record ID : 30026015
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.0648

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