Orientation in WUFI 6.5 (6.5.2.2298)

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rrenaud
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Orientation in WUFI 6.5 (6.5.2.2298)

Post by rrenaud » Wed Jul 21, 2021 5:55 am -1100

I am analyzing a building with a 45 degree orientation to true north in Baltimore, Maryland. Thereby I am analyzing Northeast, Northwest, Southeast, and Southwest wall orientations. All the results coming from the 4 directions are identical. I have checked the orientation repeatedly and they are all correct. Is anyone else experiencing this problem?

Thomas
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Re: Orientation in WUFI 6.5 (6.5.2.2298)

Post by Thomas » Thu Jul 22, 2021 12:42 am -1100

Hi rrenaud,

I performed test calculations with one of WUFI's example project files for the orientations NE, SE, SW and NW, and for all five Baltimore climate data sets. I always get different results for the different orientations.

The directional weather elements which act differently on different orientations are rain and solar radiation. If your facade materials don't take up an appreciable amount of rain water, the effect of the rain on the different orientations may be negligible.

The effect of the solar radiation may be negligible if the inclination of the component is close to 0° (flat roof), or if the "short-wave radiation absorptivity" is very small (bright surface) and the component only absorbs a negligible amount of solar radiation.

Kind regards,
Thomas

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