Gap between "Solar field thermal output" and "Thermal energy to the power cycle" (in case of TES full charged)

Start
Prev
1
Next
End

Suzuki Koichi
Topic Author

01 Oct 2013 10:50 #1847 by Suzuki Koichi

Gap between "Solar field thermal output" and "Thermal energy to the power cycle" (in case of TES full charged) was created by Suzuki Koichi

Hello.
I am trying to simulate a parabolic trough collector thermal plant with storage by ver.2013.1.15.

Could you explain the gap between "Solar field thermal output" and "Thermal energy to the power cycle” at storage full charged?

In case of no storage, "Solar field thermal output" is equal to "Thermal energy to the power cycle". Also, in case of charging to storage, "Solar field thermal output" is equal to “Thermal energy to the power cycle + Thermal energy to thermal storage".
However, when storage is full charged, it seems there is some gap between "Solar field thermal output" and "Thermal energy to the power cycle ".

I attached my output. Please explain this gap.

Best regards,

Koichi Suzuki

Please Log in or Create an account to join the conversation.

Paul Gilman

02 Oct 2013 22:12 #1848 by Paul Gilman

Replied by Paul Gilman on topic Gap between "Solar field thermal output" and "Thermal energy to the power cycle" (in case of TES full charged)

Dear Koichi,

Would you mind attaching to your original post a copy of the .zsam file that generated the results in your spreadsheet?

To attach the file, click the Edit tab above your original post and use the options under "File Attachments" to choose and attach the file.

Best regards,
Paul.

Please Log in or Create an account to join the conversation.

Paul Gilman

08 Oct 2013 15:21 #1849 by Paul Gilman

Replied by Paul Gilman on topic Gap between "Solar field thermal output" and "Thermal energy to the power cycle" (in case of TES full charged)

Dear Koichi,

Your calculations do not account for the thermal capacitance of the HTF. In the case of the power tower, you can use a value of 2.507 kJ/kg-K for salt. For a parabolic trough, you can use 2.455 kJ/kg-K for the Therminol VP-1 oil. Please see the spreadsheet that I attached to your original message for an example.

Best regards,
Paul.

Please Log in or Create an account to join the conversation.

pavankumar001@gmail.com

21 Feb 2016 23:41 #1850 by pavankumar001@gmail.com

Replied by pavankumar001@gmail.com on topic Gap between "Solar field thermal output" and "Thermal energy to the power cycle" (in case of TES full charged)

Dear Mr Paul/Mr Koichi,

Could you please attach the zsam file and the excel spreadsheet Mr.Paul referred to ?

Thanks

Please Log in or Create an account to join the conversation.