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Heated windows for buildings?

Heated windows for buildings?

Heated windows for buildings?

(OP)

Hi,
 Im looking for advice on heated windows and wonder if there is anyone here who understands and can help explain their thermal properties and behaviour.

 This is not a new technology as I understand it but has recently has a revival, being promoted as a "green" heating solution for buildings with a large proportion of external glazing. At the moment we are debating the possible merits of such a system on another eco building forum.

I work as a project manager on "eco" orientated building projects and would appreciate any assistance on understand if and how the claims made by heated window manufacturers might be valid.

many thanks

Paul

RE: Heated windows for buildings?

As with many "green" technologies, the efficiency benefits of heated windows seems a bit specious.  In my experience windows are heated primarily to prevent fogging or to remove ice.  I don't see what sort of "green" benefit can be gained by applying heat directly to a surface exposed to the outside environment.    

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