See all forum discussions about NC-v4 EQc5
 Subscribe to new posts about NC-v4 EQc5 Post a new question aboutNC-v4 EQc5
See LEEDuser’s guidance on NC-v4 EQc5»
FAQs about EQc5 :

Can I exempt a public space from the controls requirement? The owner doesn’t want visitors adjusting the thermostat all the time.

I have a naturally ventilated office with lots of operable windows. Do I need to add any other controls?

View answers »

Forum discussion

NC-v4 EQc5:Thermal comfort

Operative Temperature and Mean Radiant Temperature

Default Avatar
Nishank Shah
LEED Green Associate
Peter Basso Associates
LEEDuser Basic Member
0 thumbs up

Hi, 

Is there a simpler method to calculate or estimate operative temperature and mean radiant temperature for the Thermal Comfort credit?

The method described in ASHRAE makes us calculate the mean radiant temperature first which might be different for different rooms based on exposure direction and quantity. Then we use the mean radiant temperature to calculate operating temperature. 

Thanks, 

Nishank

0
Post a reply

You rely on LEEDuser. Can we rely on you?

LEEDuser is supported by our premium members, not by advertisers.

Go premium for $15.95  »

Profile picture for user davidp
David Posada
Integrated Design & LEED Specialist
SERA Architects
LEEDuser Expert
1361 thumbs up

Tue, 05/19/2020 - 21:16

Many projects use the UC Berkeley Center for the Built Environment's Thermal Comfort Tool. If you google "CBE Thermal Comfort Tool" you'll find an interactive page where you can enter Operative temperature, Air speed, Relative humidity, Metabolic rate, and Clothing level.  The ? Help button gives a user guide and explains the inputs, and additional functions like the solar gain calculator. 
Default Avatar
Nishank Shah
LEED Green Associate
Peter Basso Associates
LEEDuser Basic Member
0 thumbs up

Tue, 05/19/2020 - 21:56

Yes, I've been using that as well. However, it used to have a globe temp calculator which calculated mean radiant temperature. This tool has now been greyed out and no longer available for calculating MRT. Also, how do you come up with operating temperature for a space ? This is not the same as air temperature of the space. 

Wed, 05/20/2020 - 07:05

https://comfort.cbe.berkeley.edu/
Default Avatar
Nishank Shah
LEED Green Associate
Peter Basso Associates
LEEDuser Basic Member
0 thumbs up

Wed, 05/20/2020 - 13:20

Thanks. Apparently Globe Temp works in internet explorer or microsoft edge but not in google chrome. 

Add new comment

To post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.