Increasing the efficiency of solar water heating installations with flat-flat collectors: Optimization of circuit solutions and mode parametersMa’murjon Ismoilov, Zumradxon Xatamova, Ilhomidin Rustamov, Shaxobidin Xolmatov, Xurshidbek Arabboyev and Navro‘zbek IbragimovE3S Web Conf., 592 (2024) 01006DOI: https://doi.org/10.1051/e3sconf/202459201006