HVAC Systems and Indoor Air Quality
HVAC Systems and Indoor Air Quality
HVAC Systems and Indoor Air Quality
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How Much Ventilation?<br />
❂ ASHRAE St<strong>and</strong>ard 62-89:<br />
• cfm O/A per person<br />
• or go “scientific”<br />
❂ Proposed Revision to 62-89<br />
● cfm/person + cfm/ft 2<br />
●<br />
i.e., people + building<br />
❂<br />
Other approaches:<br />
● Olf (the nose test)<br />
● exposure limits
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