I got 26% OF HOURS OUTSIDE OF THROTTLING RANGE after rotating my model by 5 degrees?

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Hi dear equesters!
I was doing orientation study on my office module i can not figure out why
i got 26% OF HOURS OUTSIDE OF THROTTLING RANGE in BEPU report when i set
the azimuth at 15 degrees for ground floor, the system worked in throttling
range when azimuth at 10 or 20 degrees! the weather file i used is CTYW
Wuhan (china).

I attached the model, reports and the weather file. Any help will be
appreciated!

--
Best regards
???

caselysun's picture
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???,
Ivan ??????????
The only difference between the different azimuths is the solar radiation.
I think you should compare the summary loads report (LS-E by space, or
LS-F for the whole building) for the different orientations and see how
much the solar heat gains, especially through the windows, change. If
you really want to get into it, you can also print out hourly reports
for the solar heat gains, heating and cooling loads for the ground floor
zones. You can also switch weather files and see what happens. I will
send you by e-mail a different weather file for Wuhan that I've created.
Good luck.

Joe

Joe Huang ??

Joe Huang's picture
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On 5/22/2013 7:02 PM, Yf Sun wrote:

Joe Huang's picture
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Hi Joe
I also suspected that the under cooled hours may caused by window angular
property, but the loads reports you indicated show there's no big swing on
the solar heat gain for 15 degree azimuth compared to 10 and 20 degrees
azimuth, however i found there's a great difference in peak system cooling
load in SS-J reports, the peak load for 15 azimuth is about a half of the
load for 10,20 azimuth, so I guess the DOE program may uncorrectly
calculated the system peak load?but when i used your weather file for
simulation the unmatch hours disappeared!

caselysun's picture
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Hi dear equesters!
I was doing orientation study on my office module i can not figure out why
i got 26% OF HOURS OUTSIDE OF THROTTLING RANGE in BEPU report when i set
the azimuth at 15 degrees for ground floor, the system worked in throttling
range when azimuth at 10 or 20 degrees! the weather file i used is CTYW
Wuhan (china).

I attached the model, reports and the weather file. Any help will be
appreciated!

--
Best regards
???

caselysun's picture
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Joined: 2012-02-25
Reputation: 0

here i attached the reports for 10,15,20 degree azimuths respectively!

caselysun's picture
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Joined: 2012-02-25
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