U-value

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U-value [′yü ‚väl·yü]

(engineering)

A measure of heat transmission through a building part or a given thickness of insulating material, expressed as the number of British thermal units that will flow in 1 hour through 1 square foot of the structure or material from air to air with a temperature differential of 1°F.

thermal transmittance, U-value

The time rate of heat flow per unit area under steady conditions from the fluid on the warm side of a barrier to the fluid on the cold side, per unit temperature difference between the two fluids.

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No references found			U-2 Affair U-2 incident u-band U-bend U-bend die U-block U-boat U-bolt U-Code U-factor U-gauge u-Law U-matic U-NET Limited U-NNI U-plan U-shaped abutment U-shaped distribution U-shaped valley U-stirrup U-tie U-trap U-tube U-tube heat exchanger U-tube manometer U-value U.A.W. U.F.O. U.S. Customary System of weights and measures U.S. News & World Report U.S. Robotics U.S. Robotics, Inc. U.S. Virgin Islands National Monument U/E Užventis U160 U3 U320 U3D UA UAC UAC International UAE UAN UART UART overrun UAT UAV UAW Uaxactún UB40			U-shaped scar U-shaped valley U-shaped valley U-shaped vertebra U-shirt U-Slot Patch Antenna U-Spot U-STAR U-stirrup U-suture U-suture U-suture U-TDOA U-tie U-Típusú V U-trap U-tube U-tube U-tube U-tube heat exchanger U-tube manometer U-Tube Steam Generator u-turn u-turn U-turn (maneuver) U-turns U-U U-UD-TD U-UL U-UL-TD U-value U. U. F. O. U. F. O. U. N. U. N. U. N. U. N. U. S. U. S. U. S. A. U. S. A. U. S. Air Force U. S. Air Force U. S. Airforce U. S. Airforce U. S. Army U. S. Army U. S. Army Special Forces U. S. Attorney General U. S. Bureau of Land Management U. S. Bureau of Land Management U. S. C. U. S. Civil War U. S. Civil War U. S. Coast Guard U. S. Coast Guard U. S. Coast Guard Academy U. S. Code U. S. Congress U. S. Constitution

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