Greenhouse Power Tower (hot air convection R turbine) Stirling Engine (concentrated power R R generation) 2 Element Device(s) Needed Units Accuracy Wind Speed , wind vane m/s ± (Meter / Second) and wind mast Wind Direction , wind vane Degrees ± 5⁰ (Degrees - Zero North 90CW) and wind mast Air Temperature Temperature probe & ± 1⁰ ⁰C (Degrees Celsius) shield for temp Barometric Pressure Barometric Temp ± 60 Pa (ecto Pascals) Back Panel Temperature Temperature for back ± 1⁰ ⁰C (Degree C) panel Plane Of Array Irradiance Pyranometer or Equivalent W/m² ± 25 W/m² Watts\Meter Sq. Global Horizontal Irradiance Pyranometer or Equivalent W/m² ± 25 W/m² Watts\Meter Sq. Direct Irradiance Pyranometer or Equivalent W/m² ± 25 W/m² Watts\Meter Sq. Table 2 details the units and accuracy of measurements for telemetry data points to be sent to the CAISO in real time (i.e., 4 seconds) from solar EIRs, depending on the solar technology. Refer to Section 17.4 for detailed information.
Greenhouse Power Tower (hot air convection turbine) R Stirling Engine (concentrated power generation) R R 2 Element Device(s) Needed Units Accuracy Wind Speed (Meter / Second) , wind vane and wind mast m/s ± Wind Direction (Degrees - Zero North 90CW) , wind vane and wind mast Degrees ± 5⁰ Air Temperature (Degrees Celsius) Temperature probe & shield for temp ⁰C ± 1⁰ Barometric Pressure (ecto Pascals) Barometric Temp ± 60 Pa Back Panel Temperature (Degree C) Temperature for back panel ⁰C ± 1⁰ Plane Of Array Irradiance Watts\Meter Sq. Pyranometer or Equivalent W/m² ± 25 W/m² Global Horizontal Irradiance Watts\Meter Sq. Pyranometer or Equivalent W/m² ± 25 W/m² Direct Irradiance Watts\Meter Sq. Pyranometer or Equivalent W/m² ± 25 W/m² Table 2 details the units and accuracy of measurements for telemetry data points to be sent to the CAISO in real time (i.e., 4 seconds) from solar EIRs, depending on the solar technology. Refer to Section 17.4 for detailed information.