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Energy consumption of an ice thermal storage unitary air conditioner.

Author(s) : FUJITA T., KUNUGI Y., KOJIMA M.

Summary

The energy consumption and resultant CO2 emissions of a commercial ice thermal storage unitary air conditioner were calculated by a simple simulation programme which is based on the performance data released by its manufacturer, and hourly averaged cooling load and outdoor temperature data for an average office building in Tokyo. It was shown that the cooling mode of operation utilizing nighttime ice thermal storage is not energy saving in comparison with the conventional (non-storage) cooling mode of operation. This is also proved by the discriminant derived in this study. In addition, the power consumption of an ice thermal storage unitary air conditioner and its non-storage equivalent have been measured under even cooling loads in an office building in Tokyo. The measured seasonal data demonstrated that the former consumes 55% more energy than the latter.

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Details

  • Original title: Energy consumption of an ice thermal storage unitary air conditioner.
  • Record ID : 2004-2269
  • Languages: English
  • Source: 21st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
  • Publication date: 2003/08/17

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