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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?

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CI-2009 IEQc7.1:Thermal Comfort—Design

ASHRAE vs. ISO/EN

I am happy that LEED is accepting ISO 7730 and EN 15251 as alternative to ASHRAE 55. My problem is that there are no single requirements in these standards but examples / recommendations for design parameters for 3 different categories of comfort. In IEQp1 we are requested to meet the minimum requirements for ventilation. I would assume this is true for IEQc7.1 as well, and choose the least category. Does anyone have experience with submitting this credit following ISO / EN?

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Thu, 12/31/2015 - 22:31

In v4, the EN and ISO standards are only for use on projects outside the US. I believe the same rule applies to the ACPs for v2009. That said, if you feel strongly about using something other than ASHRAE 55 for a project in the US, state your case to the reviewers. Your case should explain why the alternative is more appropriate, not that it might be simply easier.

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