Re: window recession

This depends on how the window is recessed.  Is the pane on the inside side of
the recession, or the ourside side.

If the pane is on the outside then there should be no significant effect, so I
am assuming you are saying it is on the inside.

If you know trig, it should be easy to figure out.  Simply figure the amount
of sunlight hitting the window (or subtract the amount of shade from the
overhang from the total window area), and use that new area as the window
area.  This can be figured easily using the tangent of the angle of the sun
above the horizon.

That is, the shaded portion of the window will be tan(sun's angle) times 60 cm
times the window's width.

Marshall

Irshaad wrote:

> hi guys,
> i've got a little problem with the recession of a window while calculating
> the solar heat gain through it. till now i've been
> neglecting the effect of recession but for this problem the window is
> recessed by 60 cm.
>
> window pane (facing south)  located at 30N latitude on the 21st of june at
> 4.00 pm.
>
> the window dimension is 4m x 2.5 m = area of  10 m^2.
>
> the solar heat gain is 546 W/m^2
> the altitude correction is 1.0125
> dew point correction is 0.93
> haze correction is 0.9
> steel sash correction is 1.17
> shading coefficient of the glass is 0.85
>
> can anyone tell me how the recession of the window is considered in
> calculating the solar radiation heat gain through the glass window.
>
> thx
> --
> Hasta Luego
>
> Irshaad
> (Faster than Bruce Lee)
>
> remove INVALID to reply
> [EMAIL PROTECTED]