Dear Trnsys users I was simulating a parabolic trough power plant. the model I used was the SEGSVI power plant that has been built in the modjave desert of California. the input for the solar radiation is the direct normal insolation. when I simulate the DNI, beam radiation, total radiation(global radiation), the simulation result shows the total radiation is being maximum for summer seasons and minimum for winter seasons. but normally what I know is, the total radiation is the sum of beam radiation and diffused radiation and also the simulation result shows that the DNI is a little bit higher than that of the beam radiationof a surface (WHY). in doing all these, the weather data I used was from Dagett, and the component for the weather data processor was (TRNSYS component) was Type-15-2. from the result I told you if you tell me the reason for this. and what if I used the input for the trough to be beam radiation instead of DNI. I will attach you the figures for those I described,for summer season and winter season
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summer season.jpg
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winter season.jpg
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