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RE: [EnergyPlus_Support] Photosensors




You have almost answered your own question.� If the photosensor is active, it must read a light level to know if it needs to turn on the lights.� It reads the calculated daylight at the sensor and calculates the electric lighting to add to reach a set lighting level�.



Ned Lyon, P.E. (MA, WV)
Staff Consultant

SIMPSON GUMPERTZ & HEGER
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www.sgh.com



From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
Sent: Monday, February 01, 2016 3:26 PM
To: yahoogroups
Subject: [EnergyPlus_Support] Photosensors





When photosensors are activated in EnergyPlus, the output daylight illuminance in each zone is available. How does EnergyPlus separate daylight illuminance from electric illuminance? In a zone both electric lights and daylight are available a photosensor can tell the combined illuminance not separately daylight illuminance.




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 Posted by: "Edward G. Lyon" <EGLyon@xxxxxxx>

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