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This is to certify that your paper entitled «Experimental and Numerical Investigation of Implementing a Novel Vortex Generator: A Perforated Delta Wing Vortex Generator (PDWVG) on the Performance of Solar Air Collector» was indexed with 0 pages, in the CIVILICA citation database, code COI:JR_IJCCE-41-9_021, after evaluation and approval of the referees of the "Iranian Journal of Chemistry and Chemical Engineering Vol 41, Issue 9 , Year 2025.

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