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
Tristan Roberts
RepresentativeVermont House of Representatives
LEEDuser Expert
11477 thumbs up
July 26, 2014 - 7:21 am
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).