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Study performance on recharging the borehole by means of the exhaust-air energy.

Author(s) : ZHOU Y., FAHLEN P., LINDHOLM T.

Summary

In the paper, the performance analysis of recharging the borehole by means of the exhaust-air energy is performed. The results show that a vertical borehole used as heat source for a GSHP can be recharged in high efficiency. With equal heat transfer capabilities of exhaust-air coil and borehole collector, the system provides a maximum overall efficiency. However, due to ground infinite capacity, the optimum brine flow rate has different criteria as conventional two exchangers system. The overall efficiency is independent of exhaust-air temperature and undisturbed ground temperature, although the fluid properties are temperature dependent.

Details

  • Original title: Study performance on recharging the borehole by means of the exhaust-air energy.
  • Record ID : 2007-0853
  • Languages: English
  • Source: ACRA-2006. Proceedings of the 3rd Asian conference on refrigeration and air conditioning.
  • Publication date: 2006/05/21

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