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Development of a gas driven zeolite-water adsorption heat pump for multi-family homes.

Number: 0145

Author(s) : FÜLDNER G., VELTE A., WITTSTADT U.

Summary

In this contribution we show recent developments of a gas adsorption heat pump with the working pair zeolite-water. A functional prototype with about 40 kW nominal heating capacity for a 55/45°C heating system has been designed, built and tested at conditions that represent a typical small-to-medium sized multi-family home in Germany which has undergone an average retrofit. It is shown that exhaust air from a centralized ventilation system can be an attractive low-temperature (LT) source for this thermally driven heat pump, since it can provide a source temperature >5°C over the full heating season, and under typical operation conditions of the heat pump it only needs about 2-4 kW of LT source power, reaching a Seasonal Gas Utilization Efficiency (SGUE) of about 1.2. A typical compression heat pump would need >10 kW LT source power to provide the same heating capacity, which is not possible to provide from ventilation exhaust air.

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Pages: 8 p.

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Details

  • Original title: Development of a gas driven zeolite-water adsorption heat pump for multi-family homes.
  • Record ID : 30029739
  • Languages: English
  • Subject: Technology
  • Source: 15th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2022). Proceedings. Trondheim, Norway, June 13-15th 2022.
  • Publication date: 2022/06/13
  • DOI: http://dx.doi.org/10.18462/iir.gl2022.0145
  • Document available for consultation in the library of the IIR headquarters only.

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