ASHRAE STANDARD - 55R
ASHRAE STANDARD - 55R
ASHRAE STANDARD - 55R
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BSR/<strong>ASHRAE</strong> Standard 55P, Thermal Environmental Conditions for Human Occupancy 2/24/03<br />
Third Public Review Draft (Independent Substantive Changes to the Second Public Review)<br />
• Temperature (air, radiant, surface)<br />
• Humidity<br />
• Air speed<br />
The environmental conditions must be specified as well to ensure measurements taken correspond<br />
correctly to the design parameters. Environmental conditions required are, but again are not limited to, the<br />
following:<br />
• Outdoor temperature design conditions<br />
• Outdoor humidity design conditions<br />
• Clothing (seasonal)<br />
• Activity expected<br />
7.6.2 Validation Methods<br />
In order to determine the thermal environments ability to meet the defined criteria as outlined in Section<br />
7.6.1 above, there are two methods (one described in Sections 7.6.2.1 and the other in Section 7.6.2.2) that<br />
can be implemented. The first method of validating the thermal environment commissioning is to<br />
statistically determine occupant satisfaction through the evaluation of survey results. The second is to<br />
technically establish comfort conditions through the analysis of environment variables.<br />
7.6.2.1 Survey Occupants<br />
The purpose of <strong>ASHRAE</strong> this Sstandard 55, is to ensure that a room, building, etc, is comfortable for the<br />
majority (at least 80%) of the occupants. Therefore, an effective way to evaluate the environmental<br />
conditions is to survey the occupants. This survey should be performed for every operating mode, in every<br />
design condition. This would require a survey check sheet to be provided by the team responsible for the<br />
commissioning validating the thermal environment of the space. The sheet shall have, as a minimum, the<br />
following data for the occupant to fill in:<br />
• Occupants name, date & time<br />
• Approximate outside air temperature<br />
• Clear sky/ Oovercast (if applicable)<br />
• Seasonal conditions<br />
• Occupant’s clothing<br />
• Occupant’s activity level<br />
• Applicable Eequipment<br />
• General Tthermal Ccomfort level<br />
• Occupant’s location<br />
In addition to the occupant’s data, space should be provided for the surveyor to number the survey,<br />
summarize the results, and sign his/her name. A Ssample check sheet and clothing table are provided in<br />
Appendix E.<br />
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