Comfort envelope

Comfort envelope

The range of conditions in mechanically ventilated buildings in which the majority of occupants are likely to feel comfortable. ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) Standard 55 defines a comfort zone based on the six variables of air temperature, air velocity, relative humidity, radiant temperature, and occupant’s clothing insulation and activity level.
References in periodicals archive ?
While it's hard to find a major change in any one area, there are numerous changes spread across the performance, handling, aero, braking and comfort envelope that make the 650S a more focused, sharper, and a more comfortable drive than the 12C.
A simple control strategy that will work year-round (and will change with the weather) is to open windows when outdoor conditions fall within the ASHRAE Standard 55-2010 adaptive comfort envelope and to close windows when indoor conditions are approaching the boundaries of the comfort envelope.
Most green dots (indicating comfort) are inside the comfort envelope whereas most red dots are outside.