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How much do ‘U-Value’ good thermal insulation? Part II

It might well be that a single U-value is quoted, in reality though that single value describes the ease by which heat can pass through various stages, from an 'inside', passing through a 'wall/window' and going to the 'outside'. The resistance (inverse of the ease, resistance = 1/ease) the heat experiences as it passes from the inside air to the inner solid surface of the wall construction (and from the outer surface to the outside air)  is due to the fact that air sticks to the solid surface. How strange is that? .

FloVENT, HVAC, Boundry Layer, Thermal Insulation, U-Value

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About Robin Bornoff Follow on Twitter

Robin BornoffRobin Bornoff achieved a Mechanical Engineering Degree from Brunel University in 1992 followed by a PhD in 1995 for CFD research. He then joined Mentor Graphics Corporation, Mechanical Analysis Division (formerly Flomerics Ltd) as an application and support engineer, specializing in the application of CFD to electronics cooling and the design of the built environment. Having been the Product Marketing Manager responsible for the FloTHERM and FloVENT softwares he is now Market Development Manager for the Physical Design of Electronics in the Mechanical Analysis Division. Visit Robin Bornoff's blog

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