Re: [TRNSYS-users] CPC-Collector "Type 74"

["Jeff Thornton" <thornton@tess-inc.com>]

<My consideration is that it doesn?t
matter if the number of solar collectors hooked up in series is 5 or 6
when the total area in both simulation is the same (e.g. 10m^2 ). The
produce must be the same! Is that sure?>

No that's not correct.  There is a dependence on the number of collectors
connected in series if you're using the collector efficiency equation
approach (which that model uses).  The methodology is described in detail
in the classical "Solar Engineering of Thermal Processes" by Duffie and
Beckman.  You can also see the correlation inside the source code of the
Type - search for XNS.

<The Problem is that in the simulation with the 6 collectors hooked up in
series with a total area of 10m^2 came to a lower result as the
simulation with 5 collectors and total area of 10m^2 as well.>

That is an expected result.

With kindest regards,

Jeff


Jeff Thornton
President - TESS, LLC

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