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RE: [EnergyPlus_Support] Photosensors

To: "EnergyPlus_Support@xxxxxxxxxxxxxxx" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Subject: RE: [EnergyPlus_Support] Photosensors
From: "'Edward G. Lyon' eglyon@xxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Date: Mon, 1 Feb 2016 20:40:21 +0000
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Thread-topic: [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
781.907.9000�main
781.907.9350 direct�
617.285.2162 mobile�
781.907.9009�fax
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>

Primary EnergyPlus support is found at:
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The primary EnergyPlus web site is found at:
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The group web site is:
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Attachments are currently allowed but be mindful that not everyone has a high speed connection.� Limit attachments to small files.

EnergyPlus Documentation is searchable.� Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.


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