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Process dynamics in an industrial prototype compression/absorption heat pump.

Author(s) : RISBERG T., HORNTVEDT B., MADLAND D., et al.

Summary

The Institute of Energy Technology has developed a compression/absorption heat pump for use in industrial purposes. The heat pump upgrades waste heat from 50 °C to produce hot water of 85-95 °C and cooling water of 5-15 °C. The heat pump has two different operating conditions: day and night operation. At daytime the heat source inlet temperature is around 50 °C, and at nighttime this inlet temperature decreases to around 35 °C. These temperature changes require a flexible control system to handle the fluctuation in the heat pump system. There will be unstable conditions particularly during start-up and shutdown of an evaporator in the dairy, as this influences the heat source inlet temperature. This work presents two different control strategies tested to cope with these instabilities.

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Pages: 2004-2

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Details

  • Original title: Process dynamics in an industrial prototype compression/absorption heat pump.
  • Record ID : 2005-2814
  • Languages: English
  • Source: Natural Working Fluids 2004: 6th IIR-Gustav Lorentzen Conference
  • Publication date: 2004/08/01

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