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ASHRAE Standard 55-2013- USER MANUAL


ASHRAE Standard 55-2013- USER MANUAL

مع اصدار جديد  من اصدارات الجمعيه الامريكيه لمهندسي التكييف ASHRAE



Thermal Environmental Conditions for Human Occupancy


ASHRAE 55-2013 USER MANUAL

Standard 55 (Thermal Environmental Conditions for Human Occupancy) is a standard that provides minimum requirements for acceptable thermal indoor environments. It establishes the ranges of indoor environmental conditions that are acceptable to achieve thermal comfort for occupants. It was first published in 1966, and since 2004 has been updated periodically by a technical committee of industry experts in ASHRAE (American Society of Heating, Refrigerating and Air-

Conditioning Engineers). The most recent version of the standard was published in 2013.
The body of the standard currently consists of a forward (describing changes made in the current version), eight sections and two normative appendices:
  1. Purpose
  2. Scope
  3. Definitions
  4. General requirements
  5. Conditions that provide thermal comfort
  6. Design compliance
  7. Evaluation of comfort in existing buildings
  8. References
Normative Appendix A: Methods for determining operative temperature
Normative Appendix B: Computer program for calculation of PMV/PPD
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


Purpose

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

Scope

The standard addresses the four primary environmental factors (temperaturethermal radiationhumidity, and air speed) and two personal factors (activity and clothing) that affect thermal comfort. It is applicable for healthy adults at atmospheric pressures in altitudes up to (or equivalent to) 3,000 m (9,800 ft), and for indoor spaces designed for occupancy of at least 15 minutes

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