I think this is described in the Engineering Ref Manual for the sky dome.
The sun occupies that part of the dome, a circular area surronding the sun. The diameter of this view area is the view angle of 5.7°.
The rest are either clear or covered by cloud at different degrees .
When the sun is covered lightly by cloud, the beam intensity decreases, and the difuused component increases.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: fypguevibyor@xxxxxxxxx
Date: Thu, 8 Mar 2012 15:17:08 +0000
Subject: [EnergyPlus_Support] Asking about Direct Solar
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The sun occupies that part of the dome, a circular area surronding the sun. The diameter of this view area is the view angle of 5.7°.
The rest are either clear or covered by cloud at different degrees .
When the sun is covered lightly by cloud, the beam intensity decreases, and the difuused component increases.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: fypguevibyor@xxxxxxxxx
Date: Thu, 8 Mar 2012 15:17:08 +0000
Subject: [EnergyPlus_Support] Asking about Direct Solar
Hi all,
In the documentation, it is written:
"Direct Solar [W/m2]
Direct solar is amount of solar radiation in W/m2 received within a 5.7° field of view centered on the sun. This is also known as Beam Solar."
I don't quite understand what is the meaning of "within a 5.7° field of view centered on the sun".
Anyone know?
Thanks in advance.
Regards,
Malindo
Mech. Engineering student
Singapore
In the documentation, it is written:
"Direct Solar [W/m2]
Direct solar is amount of solar radiation in W/m2 received within a 5.7° field of view centered on the sun. This is also known as Beam Solar."
I don't quite understand what is the meaning of "within a 5.7° field of view centered on the sun".
Anyone know?
Thanks in advance.
Regards,
Malindo
Mech. Engineering student
Singapore
__._,_.___
Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
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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