This ashrae standard 15 2010 pdf has multiple issues. Unsourced material may be challenged and removed. In 2012, it rebranded itself with a new logo and tagline: “Shaping Tomorrow’s Built Environment Today”.
As of 2015, ASHRAE has more than 50,000 members. One of the four volumes is updated each year. These standards are periodically reviewed, revised and republished. 2001 and earlier as “62”, 2004 and beyond as “62. They contain articles on related technology, information on upcoming meetings, editorials, and case studies of various well-performing buildings. To demonstrate the Society’s commitment to sustainability, ASHRAE renovated its existing headquarters building in Atlanta, Ga.
60 percent reduction from the pre-renovation value. The building also serves as a live case study. A web-based user interface allows researchers around the world to extract data from the building to study factors such as energy use and electric power demand, water consumption and indoor air quality. This page was last edited on 13 December 2017, at 01:11. The most recent version of the standard was published in 2017. After the body of the standard there are 11 informative appendices. These are not part of the standard, but provide additional information about terms and methods described within the standard, as well as a bibliography, and a description of the addenda incorporated from the previous version in the current version.
As described within the standard: “The purpose of the standard is to specify the combinations of indoor thermal environmental factors and personal factors that will produce thermal environmental conditions acceptable to a majority of the occupants within the space”. Adaptive model is a model that relates indoor design temperatures or acceptable temperature ranges to outdoor meteorological or climatological parameters. Thermal comfort is the condition of mind that expresses satisfaction with the thermal environment and is assessed by subjective evaluation. A occupant-controlled naturally conditioned space is where the thermal conditions of the space are primarily regulated by occupant-controlled openings.
3 corresponding to the categories “cold,” “cool,” “slightly cool,” “neutral,” “slight warm,” “warm,” and “hot. Exceedance hour is the number of occupied hours within a defined time period in which the environmental conditions in an occupied space are outside the comfort zone. If these requirements are met and the environmental conditions inside the building fall within the indicated ranges, then compliance is achieved. For humidity ratios above 0. 0 met, the analytical model must be used to determine thermal comfort sensation.
Compliance is achieved if the conditions provide thermal neutrality, measured as falling between -0. 5 on the PMV scale. The section sets provisions for increasing the upper air temperature limit at elevated air speeds above 0. The upper limit of air speed is based on whether occupants have local control or not. To evaluate compliance, the ASHRAE Thermal Comfort Tool may be used, or a computer model validated against the code provided in Informative Appendix G of the standard. Radiant temperature asymmetry between ceiling and floor, and air and walls must be limited to reduce discomfort. To reduce draft risk at temperatures below 22.
HVAC system must be 0. When occupants do not have control over the cyclical variation or drifts in indoor environmental conditions, the conditions within this section must be met. Operative temperatures may not fluctuate more than 1. 15 minutes, nor change more than 2.
3 met and their clothing levels are 0. An accompanying table lists provisions for higher operative temperatures at air speeds above 0. This section of the standard is applicable for the design of buildings. All of the building systems must be designed to maintain the occupied spaces at the indoor conditions specified by one of the described evaluation methods at design conditions. The systems must be able to maintain these conditions within the expected range of indoor and outdoor operating conditions. To demonstrate compliance the following must be documented, where applicable.
Sample documentation is provided in Informative Appendix J. ASHRAE Standard 55 does not require the evaluation of comfort in existing building, this part of the standard offers a guideline of performing an evaluation when one is required from other codes or standard. Generally, the evaluation of comfort in existing buildings can be performed from two perspectives: from occupant satisfaction survey and physical environmental measurements. Indoor thermal comfort can be determined from the responses of the occupant survey. The survey shall be distributed to the entire occupancy or representative part of the occupancy. If that number is between 20 and 45, the minimum number of responses is 15.