> > ... I think you are describing a CPC, Compound
> > Parabolic Concentrator. Your 2.488X is close to
> > the value in the figure in the excellent book:
> > "Solar Engineering of Thermal Processes"
> > Duffie & Beckman
> > ISBN 0-471-51056-4
> > 1991
> Which figure?
> I don't see that in the 2006 edition.
Figures 7.6.4, 7.6.5, & 7.6.6
adapted from Rabl (1976b).
These refer to the CPC diagram
These are from pages 347 to 350.
My book was published in 1991.
Also, a definition of "area concentration ratio"
is described in 7.2, page 333.
This is defined as:
the ratio of the area of aperture to the area of
the receiver. Also known as "concentration ratio".
Since the described receiver is circular I
would use the circumference in calculating
Home of the $5 Solar Tracker Receiver
Powered by \ \ \ //|
Thermonuclear Solar Energy from the Sun / |
Energy (the SUN) \ \ \ / / |
Red Rock Energy \ \ / / |
Duane C. Johnson Designer \ \ / \ / |
1825 Florence St Heliostat,Control,& Mounts |
White Bear Lake, Minnesota === \ / \ |
USA 55110-3364 === \ |
(651)426-4766 use Courier New Font \ |
email@example.com (my email: address) \ |
http://www.redrok.com (Web site) ===