info@energaia.co.uk
Overheating risk analysis for buildings in Greater London Authority follows CIBSE TM52 methodology but uses the weather scenarios specifed in CIBSE TM49: Design Summer Years for London
DSY1 (Design Summer Year) for the 2020s, high emissions, 50% percentile scenario
DSY2 – 2003: a year with a very intense single warm spell.
DSY3 – 1976: a year with a prolonged period of sustained warmth.
Criterion 1 - Hours of Exceedance
Criterion 2 – Daily Weighted Exceedance
Criterion 3 - Upper Limit Temperature
In TM52, a room or building that fails any two of the three criteria is classed as overheating.
If your project is within the Greater Local Authority, we can assist you assess the risk of overheating. Please contact us on: