ASHRAE Proposes New Climate Zone for 90.1 Standard
ASHRAE/IES are proposing an expansion of climate zones for Standard 90.1-2013, Energy Standard for Buildings Except Low-Rise Residential Buildings, saying the expanded climate data could make the energy standard more applicable for global use.
The proposed addendum closes for review Jan. 19, 2015.
The addendum was developed in response to an update of ASHRAE Standard 169-2013, Climatic Data for Building Design Standards, which now contains updated climate data and additional Climate Zone 0 with humid (0A) and dry (0B) zones. Addendum w adds this climate zone to 90.1. This has global implications for the standard as Climate Zone 0 does not exist in the United States and is primarily used in the equatorial regions of South America, Africa, Middle East, southern Asia and the south Pacific.
Other addenda open for public review from Dec. 5, 2014, until Jan. 4, 2015 are:
v revises fenestration orientation requirements
y adds a new approach to simplified building lighting
z clarifies and modifies the modeling of a baseline HVAC system with air source heat pumps and electric auxiliary heat
aa clarifies an exception in a table in the design model section
ad revises the preheat coil requirement for the baseline building model in Appendix G
ae updates a section related to definitions used with motors
af restores the specification of the rating conditioners for measuring efficiency of heat pump pool heaters
ag limits mechanical cooling for vestibules
ah clarifies lighting requirements
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