Nizomjon Orifovich Usmonov; Xayrulla Sunnatullaevich Isakhojaev; Saodat Rakhsulaevna Akhmatova; Feruza Abdullaevna Khoshimova. Determination Of Thermal Parameters Of Solar Water Heating Collectors Using The “Dark” Testing Method. tajas 2020, 2, 62-67.