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Compact exhaust air/supply air heat pump with recirculation and energy recovery in renovated multi-storey-buildings.

Number: pap. n. 1375

Author(s) : OCHS F., CALABRESE T., SIEGELE D., et al.

Summary

A complete renovation package consisting of a decentralized (apartment size) exhaust-air heat pump for ventilation and heating installed in the kitchen and an air-to-water HP for domestic hot water preparation installed in the bathroom were developed. The very compact heat pumps are developed in order to enable the integration of these units into the window parapet or into the façade. The wall integration has a high potential in pre-fabrication and leads to an optimal solution for renovation of small apartments. The solutions aim to be cost effective, involving components and technologies with high efficiency and minimum noise emissions. With laboratory measurements and refrigerant cycle simulation, performance maps were generated for different compressor speeds and volume flows (supply, recirculation and additional ambient air) and depending on the source as well as on the extract air temperature and humidity. Control strategies were optimized by means of dynamic building simulations. A mock-up was installed and tested.

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Pages: 8

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Details

  • Original title: Compact exhaust air/supply air heat pump with recirculation and energy recovery in renovated multi-storey-buildings.
  • Record ID : 30026531
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.1375

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