See all forum discussions about NC-2009 IEQc7.1
 Subscribe to new posts about NC-2009 IEQc7.1 Post a new question aboutNC-2009 IEQc7.1
See LEEDuser’s guidance on NC-2009 IEQc7.1»
FAQs about IEQc7.1 :

ASHRAE-55 comfort criteria ask for space air speed. Is this the same as the supply air volume measured in cubic feet per minute (CFM)?


What should I do about a warehouse space?

How can thermal conditions for areas with metabolic rates outside of 1.0–1.3 be determined? (Per ASHRAE Standard 55-2004 Section 5.2.1.1, Figure 5.2.1.1 can be used for areas with metabolic rates between 1.0 and 1.3).

There are a few spaces in my project that can’t meet these requirements. Can’t I just exclude them?

View answers »

Forum discussion

NC-2009 IEQc7.1:Thermal Comfort—Design

Hi,
We have a project where

Hi, We have a project where design mandates space usage as manufacturing facility with met rates of 2.2, clo values of 0.6 and air velocity of 120 ft/min or 0.6m/sec. Well, ASHRAE 55-2004 mandates that PMV approach cannot be applied for air speeds higher than 40ft/min (0.2 m/sec) and refers Section 5.2.3 (Elevated Air Speed) for compliance. Unfortunately, section 5.2.3 also limits clo values (0.5-0.7) and sedentary activity (1.0 to 1.3 met rates). It appears, both PMV and Section 5.2.3 approach do not apply. So, how do we demonstrate thermal comfort compliance for scenario where we have high metabolic activity (2.2) and high air speed (120 ft/min or 0.6 m/sec)? LEED Interpretation 10279 has some interesting discussion as well. http://in.usgbc.org/leed-interpretations?keys=10279

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 tristanroberts
Tristan Roberts
Representative
Vermont House of Representatives
LEEDuser Expert
7780 thumbs up

Sat, 07/26/2014 - 11:21

Mayank, the LEED Interpretation you found is a good one. I would also direct you to the guidance shown in the FAQ above on the LEEDuser website (under Bird's Eye View—content for members).

Add new comment

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