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C <br />Orange County <br />Effective: July 1, 2013 <br />Attachment <br />From American Society of Heating, Refrigeration <br />and Air Conditioning Engineers (ASHRAE) Standards <br />Thermal comfort is that condition of mind that expresses satisfaction with the <br />thermal environment. There are large variations, both physiologically and <br />psychologically, from person to person, which makes it difficult to satisfy <br />everybody in a space. The environmental conditions required for comfort are not <br />the same for everyone. However, extensive laboratory and field data have been <br />collected that provide the necessary statistical data to define conditions that a <br />specified percentage of occupants will find thermally comfortable. <br />3. ASHRAE Standard 55 -1992 Thermal Environmental Conditions for Human Occupancy, <br />recommends the following acceptable temperature ranges at relative humidity (RH) of <br />50% and air speed less than 0.15 m /sec. (30 fpm). <br />Acceptable Temperatures <br />Season I Clothing Temperature <br />Winter Heavy slacks, long sleeve shirt 20- 23.5 °C <br />and /or sweater (68 -75 °F) <br />Summer Light slacks and short sleeve 23 -26 °C <br />shirt (73 -79 °F) <br />.httL.//www.ccohs.ca/oshanswers/phys_aaents/hot cold.html <br />