Paper Conference

2018 Building Performance Analysis Conference and SimBuild co-organized by ASHRAE and IBPSA-USA


How to Improve ASHRAE 55 and Make It More Relevant

Andrew Corney, Vladimir Bajic
Trimble – SketchUp and Sefaira Division, London, UK
Trimble – SketchUp and Sefaira Division, New York, NY

Abstract: ASHRAE 55 is a standard that provides a way for occupant thermal comfort to be measured for building designs. It goes beyond air temperature to account for a range of factors, so that a more holistic assessment of occupant thermal satisfaction can be measured. The standard needs to improve for two key reasons. Firstly, the comfort targets it sets are unachievable when Operative Temperature is measured by universally accepted methods. Secondly, an alternative method for measuring Operative Temperature allows almost all designs to comply and undermines a substantial part of the original intent of the standard. This paper uses analysis to support these claims and proposes changes that would bring the standard back up to a level where it can be effective in its purpose.
Pages: 359 - 366