Abstract
This study investigates summer indoor temperatures in energy-efficient multilevel houses built since 2010 in Adelaide to identify and define overheating during summer months. The method includes three steps: 1) calculating the number of days with top-floor maximum daily air temperature above 32 °C during four summers (December-February of 2011–2015); 2) calculating the frequency, integral and average of outdoor air temperature above 35 °C and the same parameters for top-floor temperature exceeded ground floor temperature for the naturally ventilated (NV) mode during eight summers (December-February of 2011–2018); and 3) correlation between ground floor temperature and outdoor sunshine hours as well as running mean outdoor temperature for NV mode during the same eight summers.Results showed the top-floor maximum daily air temperature was above 32 °C for 21% of the summer days for a mix of air-conditioned (AC) and NV modes. Overheating occurred in the top floors. Overheating occurs in low-performance energy-efficient houses about twice more often than high-performance energy-efficient houses. While the ground floors of high-performance houses matched the adaptive thermal comfort standard, the top floors exceeded the adaptive thermal comfort by overheating for 243 h, with 250 integral and intensity of 3.5 °C. Overheating in top floors lasts significantly longer than the outdoor high summer temperature. The paper also proposes novel parameters for evaluating the occurrence of overheating based on analysis of the data.
Accepted Version
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
