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Betr.: [TRNSYS-users] type 109 on mode tracking 4
Dear Javier,
- If the sun is high in the sky the total radiation on horizontal is usually greater.
- Of course it also depends on the orientation of your tilted surface, (if this is north for example, it will not have very high total radiation)
- Lastly, as I think is the case in your case, i think for a vertical surface the diffuse radiation is always less (view factor to sky = 0,5). So if there is no beam radiation (yet) (as might be the case at hour 608, being around 8 in the morning), a horizontal surface receives more radiation.
Kind regards, Sabine
>>> "javier mota" <fjmi_3i@hotmail.com> 11/16/05 11:10 vm >>>
Halo :I am javier mota from 3i-ingeniera, madrid.
I was working a very simple program: type 109 and output plotter
I generate weather data for albacete, a city in spain, with meteonorm.
I was looking radiation on horizontal and radition on tileded surface on
mode tracking 4.
I expectes total radiation on tilded surface would be always greater than
total radiation on horizontal
But I have found:
hour temp ºC rad_horiz_W rad_mode_4
608.25 -3.62 0.00 0.00
608.50 -3.58 0.91 0.56
608.75 -3.45 15.62 9.90
609.00 -3.24 35.67 79.22
would be anything wrong?
thanks in advance.
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