Differences between loss calculations

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gulinacarol
Topic Author

29 Jul 2013 08:19 #1723 by gulinacarol

Differences between loss calculations was created by gulinacarol

Hi Paul,

I am modelling dish-stirling systems for Turkey Ankara climate conditions.
I am doing a parametric simulation for receiver aperture diameter to look over the annual energy and receiver loss values.
I think i have two options to look at the losses.
First one is, substracting receiver outlet power from inlet power.
Second one is, looking the total receiver losses at the results page (tables).

But the first and second one is not equal.
I am attaching the files that i get from the results.

Thank you

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Paul Gilman

29 Jul 2013 16:51 #1724 by Paul Gilman

Replied by Paul Gilman on topic Differences between loss calculations

Hello,

In the spreadsheet you attached, it appears to me that the values in Column C (in-out) and D (Total Receiver Losses (MW), hourly) are equal. There are small differences due to rounding error, but I think you can consider those values to be equivalent.

Best regards,
Paul.

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gulinacarol
Topic Author

29 Jul 2013 18:26 #1725 by gulinacarol

Replied by gulinacarol on topic Differences between loss calculations

Thank you Paul.

But when i sum all the values over a year, column C equals 5.695 MWh, column D equals 5.996 MWh.
300 kWh seems like a slightly big difference to me.
So which one should i use as the total receiver loss?

Best wishes
Gülin

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