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IIR document

Exergy analysis of a heat pump tumble dryer.

Number: pap. n. TP-041

Author(s) : BELLOMARE F., BOBBO S., MINETTO S.

Summary

As the market penetration of household tumble dryers increases, the legislation and the consumers are asking for higher energy efficiency and lower environmental impact. In this context, heat pump has been recognized as an attractive technology which can lead to significant energy saving compared to traditional electrically heated tumbler dryers. In this paper, exergy analysis is proposed as a tool to identify the thermodynamic losses in a heat pump tumble dryer, thus showing possibilities for performance improvements. The peculiarities of heat pump tumble dryers require an original approach to apply exergy analysis to the system. In fact, the process air flows through the drum and heat pump evaporator and condenser in a closed loop, and the air temperature lift in the condenser is particularly high with reference to other heat pump applications. The developed method was applied to a specific machine, considering also heat exchangers and compressor performances. Several refrigerants suitable for heat pump tumble dryers were analysed and compared. The main exergy losses were identified in the compressor for all the considered refrigerants, although the relative weight of each component loss was very much dependent on the specific fluid.

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Pages: 8 p.

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Details

  • Original title: Exergy analysis of a heat pump tumble dryer.
  • Record ID : 30008113
  • Languages: English
  • Source: 4th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants
  • Publication date: 2013/06/17

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