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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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NC-2009 IEQc7.1:Thermal Comfort—Design

Meeting humidity requirements with mixed mode

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Carly Ruggieri
Senior Sustainability Consultant
Steven Winter Associates, Inc.
LEEDuser Basic Member
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Does anyone have any experience or guidance for documenting compliance with ASHRAE 55 with a mechanically conditioned, naturally ventilated building? When windows are open, the required humidity levels may not be achieved depending on the time of the year. Humidity control with natural ventialtion is the only issue we are having with this credit.

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Fri, 09/23/2011 - 15:49

Hi Carly, have you received any comments on this. I have the same problem with a residential tower that uses natural ventilation but Mitsubishi split system for space conditioning. The LEED form does not adequately address this situation. Any guidance would be appreciated. Thanks!

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