Home      About      Contact      Submit an Item      
Passive    PV    Homes    Commercial    Wind    Projects    DIY    Resources    Tools    Materials    
Watch Wild Horse Wind Thumbnail

Wild Horse Wind Facility Video (Washington, USA)


Watch Ballard Library Green Roof Part 2 Thumbnail

Ballard Library Green Roof Part 2 Video


Watch Solar Cooking

Solar Cooking


  

 

 

 

Glossary

Terms for Architecture, Green Building & Energy


This glossary includes more than 300 solar terms, as well as hundreds of additional sustainable design and construction terms.

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z    All  

U-value

Definition: The total thermal conductance of a building assembly (wall, floor, ceiling, etc.), including the indoor and outdoor air-film resistance of the assembly. The U-value when multiplied by the effective temperature difference between the indoors and outdoors, including the effects of solar and sky radiation (the "sol-air" temperature) where appropriate, will yield the normalized (per unit area) heat flow across that building composite. The units of U-value are Btu/hr-ft2-oF.