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ASHRAE Publishes 2017 Version of Thermal Comfort Standard

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Standard 55-2017 now includes calculations from direct solar radiation
 
ATLANTA – The 2017 edition of ASHRAE’s major thermal comfort standard has been published to incorporate seven published addenda to the 2013 edition.
 
ANSI/ASHRAE Standard 55-2017, Thermal Environmental Conditions for Human Occupancy, simplifies the language of the 2013 standard and clarifies the three comfort calculation approaches in Section 5.3.3, "Elevated Air Speed." The 2017 edition includes a new requirement to calculate the change in occupants' thermal comfort from direct solar radiation.
 
“The updates to Standard 55-2017 are the result of a continuing series of modifications made based on new research, experience, and proposals from designers, manufacturers and users,” says Abhijeet Pande, chair of the Standard 55 committee. “Standard 55 has been rewritten with a renewed focus on application of the standard by practitioners and use of clear, enforceable language.”
 
The three comfort calculations methods provided in the 2017 edition are:
 
 - a graphic method for simple situations,
 - an analytical method for more general cases, and
 - a method that uses elevated air speed to provide comfort.

Other additions include simplification of Appendix A to a single procedure for calculating operative temperature; clearly stated requirements and calculation procedures appearing sequentially; an update to the scope to ensure the standard is not used to override health, safety; critical process requirements; and removal of permissive language.

Reliable ControlsThe cost of ANSI/ASHRAE Standard 55-2017 is $89 for ASHRAE members ($105, non-members). To order, visit www.ashrae.org/bookstore or contact ASHRAE Customer Contact Center at 1-800-527-4723 (United States and Canada), 404-636-8400 (worldwide) or fax 678-539-2129.
 
About ASHRAE
ASHRAE, founded in 1894, is a global society advancing human well-being through sustainable technology for the built environment. The Society and its more than 56,000 members worldwide focus on building systems, energy efficiency, indoor air quality, refrigeration and sustainability. Through research, standards writing, publishing, certification and continuing education, ASHRAE shapes tomorrow’s built environment today. More information can be found at www.ashrae.org/news.





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