Performance Enhancement of Solar Air Heaters Using Triangular ChannelsSharafutdinova Marvar, Musayeva Amina, Jumayeva Zamira, Xalilov Bahromjon, Sodiqova Nigora and Raximova LolaxonE3S Web Conf., 692 (2026) 01007DOI: https://doi.org/10.1051/e3sconf/202669201007