Issue overview

The indoor wet-bulb globe temperature (WBGT) is a measure of indoor heat stress as it affects humans.
We propose to add it as a report variable to EnergyPlus to help quantify the thermal resilience of buildings.

It is calculated as follows

WBGT = 0.7WBT + 0.3OT

where
WBT is the zone air wet-bulb temperature already calculated in EnergyPlus
OT is the zone operative temperature, which is the average of the Zone Mean Air Temperature and the Zone Mean Radiant Temperature already calculated in EnergyPlus.

Details

Some additional details for this issue (if relevant):

• Platform (Operating system, version)
• Version of EnergyPlus (if using an intermediate build, include SHA)
• Unmethours link or helpdesk ticket number

Checklist

Add to this list or remove from it as applicable. This is a simple templated set of guidelines.

• Defect file added (list location of defect file here)
• Ticket added to Pivotal for defect (development team task)
• Pull request created (the pull request will have additional tasks related to reviewing changes that fix this defect)