Field Testing of an Acoustic Method for Locating Air Leakages in Building Envelopes
Open Access
Abstract
Maintaining the airtightness of building envelopes is critical to the energy efficiency of buildings, yet leak detection remains a significant challenge, particularly during building refurbishment. This study addresses the effectiveness of the acoustic beamforming measurement method in identifying leaks in building envelopes. For this reason, an in-field study employing the acoustic beamforming measurement method was conducted. The study involved testing over 30 rooms across three different multi-story office buildings of varying ages and heterogeneous envelope structures. Numerous leaks were located in the façades, which were subsequently visually confirmed or even verified with smoke sticks. The data, captured using an acoustic camera (a microphone ring array), revealed distinct spectra that indicate the method’s potential for further research. The basic functionality and the significant potential of this methodology for localizing leakages in large buildings were proven.Keywords
Funding Information
- Ministry of Economic Affairs, Labour and Tourism Baden-Württemberg (WM3-4332-157/64, 03EN1079A)
- Bundesministerium für Wirtschaft und Energie (WM3-4332-157/64, 03EN1079A)
This publication has 23 references indexed in Scilit:
- Improving building envelope knowledge from analysis of 219,000 certified on-site air leakage measurements in FranceBuilding and Environment, 2019
- A discussion concerning active infrared thermography in the evaluation of buildings air infiltrationEnergy and Buildings, 2018
- Factors influencing airtightness and airtightness predictive models: A literature reviewEnergy and Buildings, 2017
- An infrared thermography passive approach to assess the effect of leakage points in buildingsEnergy and Buildings, 2017
- Assessing uncertainty in housing stock infiltration rates and associated heat loss: English and UK case studiesBuilding and Environment, 2015
- An alternative method for evaluating the air tightness of building componentsBuilding and Environment, 2013
- Acoustic approach for building air permeability estimationBuilding and Environment, 2012
- Building leakage, infiltration, and energy performance analyses for Finnish detached housesBuilding and Environment, 2009
- Air tightness and air leakages of new lightweight single-family detached houses in EstoniaBuilding and Environment, 2007
- A sonic method for building air-leakage measurementsApplied Energy, 1986