RETRACTED: The effect of multiplicity of carrier circulation on the efficiency of single-contour thermoisiphon systems of sollor hot-water supplyMa’murjon Ismoilov, Gulmira Obidova, Muqaddamxon Juraeva, Azimjon Meliq‘oziev, Dildora Maxkamova and Maxbuba Toshpo‘latovaE3S Web Conf., 538 (2024) 01007DOI: https://doi.org/10.1051/e3sconf/202453801007