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Posts posted by Thomas

  1. Hei. 

    I am trying to simulate a facade system in Norway based on real irradiation values and compare the simulation to the real system output. While the simulation is relatively accurate in summer the output in winter is very low. This is also the case if I simulate with an albedo of 90% during the winter months. 

    According to our irradiation sensors on the facade, the real received irradiation is up to 3-4 x GHI during the winter months. 
    If I look at the formula used to calculate the gains from the ground reflection the maximum possible gain for a facade is 
    RTI = GHI*albedo/2           (the cos() term will be 0 as ym 90deg)


    I have two questions now:

    1. What happens with the other 50% of GHI in the theoretical case the albedo is 100%
    2. Is there a way to include reflection from the surrounding area (buildings, trees, horizon, etc) into account as well?  


    Ground reflection (Calculation) :: PV*SOL® help (valentin-software.com)

  2. Hei. 

    Is it possible to include detailed weather data in the simulation report (similar to PVSyst)? E.g. Total Global irradiation, Diffuse irradiation, Temperature, etc.. for each month. 

    This spart is not visible in the report and makes it very hard to compare different simulations (from different people). 

    Further can I include the used Albedo & Soiling values for each month in the report?


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