kindly find aattache this article which will help you

See these articles:

1- https://www.researchgate.net/profile/Dr_Mohd_Faizal_Fauzan/publication/263888126_Energy_and_Exergy_Analysis_of_a_Flat_Plate_Solar_Collector_Using_Different_Nanofluids/links/00b7d53c3cba6b934b000000/Energy-and-Exergy-Analysis-of-a-Flat-Plate-Solar-Collector-Using-Different-Nanofluids.pdf

2- http://jjmie.hu.edu.jo/vol10_1/JJMIE-125-14-01.pdf

3- http://www.scielo.org.za/pdf/jesa/v24n3/02.pdf

4- https://pdfs.semanticscholar.org/ba23/aa6cc3c1d8c50c6a3cebb8fc2c14abfb4ba7.pdf

For determining the efficiency of flat plate collector please refer the following paper:

Investigation of indirect solar drying of ginger rhizomes (Zingiber officinale): A comparative study

Thankyou every Prof. answers me.

Hello Mr. Mohamed

What is the purpose of measuring the exergy efficiency of flat plate collector? There is multiple ways to express efficiency, with different boundary condition assumptions that may lead to different results.

Is it is just for expressing the performance? Optimizing the design options? Comparing and contrasting with other technologies?

There is alternative expression with "Internal boundary condition" assumption (helps to normalize the results with other heat production systems) Article Exergy-based approaches for performance evaluation of buildi...

The expression using detailed design parameters that is useful if looking for optimization Article Exergetic optimization of flat plate solar collectors

There is definitions as universal and functional efficiency expressions that may produce different results.

Hope that this information helps to find right solution and understand additional aspects that may influence your results.

Best regards,

Karolis

Dear Karolis Janusevicius, Thank you for your answer. I must ask my self what i need???

But first, i want to know how i can calculate???

and Pls the papers you mentioned not available. Pls you can help??

Regarding