Enhancing Heat Pump Installation Through Frequency-Based Acoustic Directivity Information: An Open Database Initiative

Luisa Stöckl (Author and Speaker)
Reichl, C. (Author)
Francois Bessac (Author)
Georg Klein (Author)
Czuka, M. (Author)

Activity: Talk or presentation / Lecture › Presentation at a scientific conference / workshop

Description

Heat pumps are gaining popularity due to their efficiency, carbon neutrality, and use of renewable energy. Air-to-water models are favored for low cost and easy installation. However, proper placement to reduce noise is essential. Current noise assessments lack detailed frequency and directivity data. Standard certification tests provide frequency-resolved partial sound power levels for five surfaces around the unit, offering basic directivity insights. As part of IEA HPT Annex 63, an anonymous database was created, combining heat pump dimensions, operating conditions, and surface types with their frequency spectra. Initially, it includes data from about 30 units measured at CETIAT and AIT, with expansion planned in 2025, inviting contributions from other laboratories. This contribution introduces the database and shows a first exploitation.

Period	19 Aug 2025
Event title	Joint Annual Meeting of ÖPG and SPS 2025: 74th Joint Annual Meeting of the Austrian Physical Society
Event type	Conference
Location	Vienna, AustriaShow on map
Degree of Recognition	International

Research Field

Efficient Buildings and HVAC Technologies

Keywords

Acoustic Data Base
IEA HPT Annex 63