Increase in light consumption with shading

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Hi,

I am simulating my model in DD wizard.
I have put vertical building shading in east -west direction.

Although I am getting slight decrease in cooling consumotion, but it is
resulting in significiant increase in area lights consumption.

Is this due to daylights being switched on?

akshat's picture
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Joined: 2018-09-22
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Hi Akshat,
If you are simulating daylighting controls, then yes it would be reasonable to get an increase in lighting energy if you add building shading.
Regards,
~Bill

William Bishop, PE, BEMP, BEAP, CEM, LEED AP
Senior Energy Engineer

[Pathfinder-EA-logo-2]T: (585) 698-1956 F: (585) 325-6005
bbishop at pathfinder-ea.com www.pathfinder-ea.com
134 South Fitzhugh Street
Rochester, NY 14608 [cid:image003.png at 01D4696C.24E8D490] Ask me why Carbon Fee & Dividend may be right for you.

Bill Bishop's picture
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Hi,

I have now switched off the daylight.
Now with vertical building shades on storey height curtain wall on west
side and side fins in east side windows, I am getting very negligible
decrease in cooling.

Any idea what could be the reason?

Hi Akshat,

If you are simulating daylighting controls, then yes it would be reasonable
to get an increase in lighting energy if you add building shading.

Regards,

~Bill

*William Bishop, PE, BEMP, BEAP, CEM, LEED AP*

*Senior Energy Engineer*

[image: Pathfinder-EA-logo-2]*T: (585) 698-1956* F:
(585) 325-6005

bbishop at pathfinder-ea.com
www.pathfinder-ea.com

134 South Fitzhugh Street

Rochester, NY 14608 *Ask me why Carbon Fee & Dividend
may be right for you.*

*From:* Equest-users *On
Behalf Of *Akshat Kabra via Equest-users
*Sent:* Sunday, October 21, 2018 11:35 AM

*To:* equest-users at lists.onebuilding.org
*Subject:* [Equest-users] Increase in light consumption with shading

Hi,

I am simulating my model in DD wizard.

I have put vertical building shading in east -west direction.

Although I am getting slight decrease in cooling consumotion, but it is
resulting in significiant increase in area lights consumption.

Is this due to daylights being switched on?

akshat's picture
Offline
Joined: 2018-09-22
Reputation: 0