[TRNSYS-users] Strange results from Type567
David Bradley
bradley at tess-inc.com
Tue Apr 28 09:00:39 PDT 2009
Chun Kwong,
You are correct - that is a bug we found some time ago. I will send you
modified DLLs for your Green Building Library in a separate email.
Kind regards,
David
a8304506 at graduate.hku.hk wrote:
> Hello, Trnsys users.
>
> I try to simulate the performance of a PV panel using Type567. However, I have
> two queries:
>
> 1. I try to compare the performance of a glazed and unglazed PV panel, but the
> power ouputs from the two types look the same. Is it normal?
> 2. The output from the PV panels is very small (less than 0.1kW for 100m2 PV
> panels). By reviewing the source code of Type567, I suspect that there is an
> error in the calculation of the "Power". It seems that the original formula
> "POWER=TAUALPHAN*XKAT*GT*PV_EFFICIENCY" needs to be multiplied by "AREA" when
> compared with the formulation for the "Absorbed radiation" based on
> "Q_ABS=AREA*GT*TAUALPHAN*XKAT*(1.-PV_EFFICIENCY)". Am I correct?
>
> Your reply is highly appreciated. Thank you!
>
> Best Regards
> LEE, Chun Kwong
> Division of Building Science and Technology
> City University of Hong Kong
>
>
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>
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--
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Thermal Energy System Specialists (TESS), LLC
David BRADLEY 22 N. Carroll Street - Suite 370
Partner Madison, WI 53703
USA
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E-mail: bradley at tess-inc.com
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