Improving Thermal Performance of Solar PTC Using Internal Finned StructureIsmoil Juraboev, Sanjar Jurakulov, Omadjon Urishev, Odiljon Rakhmatov, Olim Eshkobilov, Khursanoy Sadirova and Lola AliyarovaE3S Web Conf., 661 (2025) 04018DOI: https://doi.org/10.1051/e3sconf/202566104018