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Acoustic Characterisation of an Air-To-Water Heat Pump for Different Operating Conditions: Inter-laboratory Results.

Number: No 160

Author(s) : BESSAC F., FUMAGALLI R., HELLGREN H., OLTERSDORF T., PEDERSEN S., FLECKL T., REICHL C.

Summary

Since the last 5 years the European heat pump market is showing an accelerated growth of outdoor air source heat pumps. The noise emitted by heat pumps is recognised as a drawback of the technology, especially during non-steady state operation of the heat pump. Within Annex 51 “Acoustic Signatures of Heat Pumps” of the IEA HPT TCP, a dedicated task is the experimental investigations on acoustic performance of air-to-water heat pumps. The measurements of several laboratories on a unit, according to several operating conditions, on standard conditions (EN 14511), part-load conditions (EN 14825) and ERP (EN 12102-1) are compared. Under some conditions, some frost/defrost cycles occur, and a focus is set on the spectrum and sound level changes that can be observed between these cycles. The paper also presents some data about the acoustic directivity of the unit.

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Pages: 9 p.

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  • Original title: Acoustic Characterisation of an Air-To-Water Heat Pump for Different Operating Conditions: Inter-laboratory Results.
  • Record ID : 30030015
  • Languages: English
  • Subject: Technology
  • Source: 13th IEA Heat Pump Conference 2021: Heat Pumps – Mission for the Green World. Conference proceedings [full papers]
  • Publication date: 2021/08/31

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