Review of methods for improving the thermal performance of solar air collectors with flat platesU.Kh. Ibragimov, S.I. Khamraev, S.M. Shomuratova, A.S. Botirov and A.B. SattorovBIO Web Conf., 71 (2023) 01048DOI: https://doi.org/10.1051/bioconf/20237101048