ASHRAE - 55 ADD C
Thermal Environmental Conditions for Human Occupancy
|Publication Date:||30 April 2021|
Addendum c to Standard 55-2020 changes the lower limit of average air speed when using the Elevated Air Speed Comfort Zone Method from 0.2 m/s to 0.1 m/s. The change is to avoid the step change in the comfort zone that results from changing models at 0.2 m/s from the PMV model to the SET model.
Note: In this addendum, changes to the current standard are indicated in the text by underlining (for additions) and (for deletions) unless the instructions specifically mention some other means of indicating the changes.