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SketchUp OpenStudio Photovoltaic temperature coefficient

asked 2022-12-02 03:38:38 -0500

Saulius's avatar

updated 2023-04-22 08:10:05 -0500

Is photovoltaic temperature coefficient taken into account when modeling PV with default OpenStudio SketchUp plug-in?

The question arose due to the discrepancies between PV energy production yields between our estimates, and our client's internally computed estimates.

Some of the discrepancies can of course be due to the use of different weather data. However when taking into consideration that the PV system in question is located close to the equator, and OpenStudio SketchUp plug-in uses "OpenStudio::Model::GeneratorPhotovoltaic::simple(model)" class, which takes no inputs for PV temperature coefficient in OpenStudio SketchUp plug-in — I guess it's safe to assume that by default temperate effects on PV energy generation are not taken into account when utilizing the default OpenStudio SketchUp plug-in features?

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answered 2022-12-02 09:45:04 -0500

See the EnergyPlus description for the PhotovoltaicPerformance:Simple object here. There are other more detailed PV models available in EnergyPlus, including PhotovoltaicPerformance:EquivalentOne-Diode and PhotovoltaicPerformance:Sandia. There is also the ability to use PVWatts via the Generator:PVWatts object.

Additional information on all the PV models can be found in the EnergyPlus Engineering Reference for Photovoltaic Arrays.

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Asked: 2022-12-02 03:38:38 -0500

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Last updated: Dec 08 '22