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End loss
- Yuji Saito
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06 Apr 2013 01:50 #1517
by Yuji Saito
End loss was created by Yuji Saito
Dear Sir/Madam,
What is the definition of "End loss" in Parabolic trough simulation? How is it calculated? What is the difference between "Bellows shadowing" and "End loss"?
Thank you in advance.
What is the definition of "End loss" in Parabolic trough simulation? How is it calculated? What is the difference between "Bellows shadowing" and "End loss"?
Thank you in advance.
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- Paul Gilman
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- Posts: 5665
08 Apr 2013 16:19 #1518
by Paul Gilman
Replied by Paul Gilman on topic End loss
Hello,
End loss is radiation that is reflected off of the end of the collector during hours when the radiation incidence angle is not normal to the collector aperture. Some of this radiation may be partially absorbed by the neighboring collector, and is called "end gain." For a description of how SAM calculates these values, see Section 2.3 of the parabolic trough reference manual ( PDF 3.7 MB ), starting on Page 21.
The bellows is a portion of the receiver designed to accommodate thermal expansion and contraction. Depending on its design, it may reduce the active absorbing area of the receiver. In SAM, you can represent this loss using the Bellows Shadowing input on the Receivers page.
Best regards,
Paul.
End loss is radiation that is reflected off of the end of the collector during hours when the radiation incidence angle is not normal to the collector aperture. Some of this radiation may be partially absorbed by the neighboring collector, and is called "end gain." For a description of how SAM calculates these values, see Section 2.3 of the parabolic trough reference manual ( PDF 3.7 MB ), starting on Page 21.
The bellows is a portion of the receiver designed to accommodate thermal expansion and contraction. Depending on its design, it may reduce the active absorbing area of the receiver. In SAM, you can represent this loss using the Bellows Shadowing input on the Receivers page.
Best regards,
Paul.
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