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Performance improvement of ground-source heat pump systems by applying multi-split heat pumps and low flow circulation system.

Author(s) : KATSURA T., NAKAMURA Y., NAGANO K., et al.

Summary

In order to promote installation of the ground-source heat pump (GSHP) system to the medium-scale building in moderate climate region, the authors have developed a low flow circulation (LF) GSHP multi-split system. This system applies low flow and large temperature difference circulation system in primary side and multi-split system in secondary side and can reduce energy consumption for circulating the thermal medium. The authors have been conducted field experiment of the LF-GSHP multi-split system since June 2006. Until today, the result of cooling operation demonstrated that the output and COP with the highest output in this field test were almost equal to the one in laboratory experiment. This was similar to the result of heating operation. Result of cooling operation with the output of around 7 kW provided the largest COP of 6-8.

Details

  • Original title: Performance improvement of ground-source heat pump systems by applying multi-split heat pumps and low flow circulation system.
  • Record ID : 2009-0832
  • Languages: English
  • Source: 9th IEA Heat Pump Conference 2008: advances and prospects in technology, applications and markets. Conference proceedings [CD-ROM + abstracts].
  • Publication date: 2008/05/20

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