Orange County NC Website
Browse       Search
13 <br />Orange County Page 1 of 4-0 <br />Effective: JulaRuary 1, 201386 <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 />tt tom gmRd6istroes .bRetGGM�WhFteoaoer.aspiF?SGRome_DIi imhiRQ 1 oRd 1 H\ /AG Grvi i <br />�TrneRt deer !! 141-90 <br />2. This standard specifies the combinations of indoor space environment and <br />personal factors that will produce thermal environmental conditions acceptable <br />to 80% or more of the occupants within a space. The environmental factors <br />addressed are temperature, thermal radiation, humidity, and air speed; the <br />personal factors are those of activity and clothing. <br />http : / /www.constructionbook.com /xg /ASP /Producti D.3695/id.402/su b I D.636 /gx/def <br />ault2.htm <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 />Season <br />Winter <br />Summer <br />Acceptable Temperatures <br />Clothing <br />Heavy slacks, long sleeve shirt <br />and /or sweater <br />Light slacks and short sleeve <br />shirt <br />http : / /www.ccohs.ca /oshanswers /phys agents /hot cold.html <br />Temperature <br />20 -23.5 °C <br />(68 -75 °F) <br />23 -26 °C <br />(73 -79 °F) <br />