Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
I suggest you to check DesignBuilder program help, more specifically at the sub-chapter "Comfort Radiant Temperature Calculation" https://designbuilder.co.uk/helpv6.0/#_Occupancy.htm
In summary:
This field specifies the type of Mean Radiant Temperature (MRT) calculation the user wishes to use for the thermal comfort model. There are currently two options:
1-Zone averaged where the standard MRT is used in comfort calculations.
2-Surface with largest window which calculates the radiant temperature for a person close to the largest window in each zone.
