[TRNSYS-users] tm2 Los angles weather data

1112102005 at ncepu.edu.cn 1112102005 at ncepu.edu.cn
Wed Aug 6 00:21:00 PDT 2014


hi all,

I tried to get the DNI(direct normal irradiance/insolation), however, from the Tm2 file I can only choose to output direct normal radiation and direct normal illuminance. could anyone tell me how to transform the following data into dni? Btw, whats the unit for the data below? I want to get DNi in W/m2 thanks.

      hour   DNradiation   DN illuminance

| 129 | 910.8 | 19000 |
| 130 | 1656 | 41000 |
| 131 | 2192.4 | 58200 |
| 132 | 2149.2 | 57800 |
| 133 | 2476.8 | 66700 |
| 134 | 2404.8 | 63800 |
| 135 | 1900.8 | 46900 |
| 136 | 1314 | 27800 |
| 137 | 295.2 | 2800 |
Jingxiao Han
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