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Variables and style rules
ukrien edited this page Mar 31, 2015
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28 revisions
| variable | description | comment |
|---|---|---|
| tz | timezone | |
| lat or latitude | latitude | |
| lon or long or longitude | longitude | |
| dni | direct normal irradiance | |
| dni_et | direct normal irradiance at top of atmosphere (extraterrestrial) | uvchik: Is 'et' obvious? Or better something like 'extra' oder 'extrat'? wholmgren: maybe extra is better. |
| dhi | diffuse horizontal irradiance | |
| ghi | global horizontal irradiance | |
| aoi | angle of incidence | |
| aoi_projection | cos(aoi) | |
| airmass | airmass | |
| airmass_relative or relative_airmass | relative airmass | wholmgren: does anybody prefer an order? |
| airmass_absolute or absolute_airmass | absolute airmass | |
| ground_diffuse or poa_ground_diffuse | in plane ground reflected irradiation | |
| poa_direct | direct/beam irradiation in plane | |
| poa_diffuse | total diffuse irradiation in plane. sum of ground and sky diffuse. | |
| poa_global | global irradiation in plane. sum of diffuse and beam projection. | |
| sky_diffuse or poa_sky_diffuse | diffuse irradiation in plane from scattered light in the atmosphere (without ground reflected irradiation) | |
| surf_tilt or surface_tilt | tilt angle of the surface | |
| surf_az or surf_azimuth or surface_azimuth | azimuth angle of the surface | |
| sun_zen or sun_zenith or solar_zenith | zenith angle of the sun | |
| sun_az or sun_azimuth or solar_azimuth | azimuth angle of the sun | |
| temp_cell | temperature of the cell in Kelvin | |
| voltage_mpp | module voltage at the maximum power point | likewise: ampere, power |