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Performance of a 100 kW low charge heat pump using propane.

Author(s) : DEL COL D., CAVALLINI A., DA RIVA E., et al.

Summary

The experimental performance of a 100 kW heat pump using propane is reported in the paper. The charge minimization is a priority in the design and thus shell-and-tube heat exchangers using minichannels and providing low charge have been installed in the unit, along with conventional brazed plate heat exchangers, in order to compare different working configurations, both in terms of energy efficiency and refrigerant charge. The performance when using the minichannel condenser is compared to the one obtained when using a brazed plate condenser, and the influence of a minichannel internal heat exchanger on the performance of the equipment is measured and discussed. It is shown that a 100 kW heat pump without a liquid receiver could be run with around 3 kg of propane using a plate condenser and evaporator. Using the minichannel condenser, around 0.8 kg reduction, corresponding to around 25% of the total amount, can be obtained, with a negligible performance loss.

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Pages: 2008-2

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Details

  • Original title: Performance of a 100 kW low charge heat pump using propane.
  • Record ID : 2009-0384
  • Languages: English
  • Subject: Technology
  • Source: 8th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2008)
  • Publication date: 2008/09/07

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