Авезов Р.Р., Авезова Н.Р., Рахимов Э.Ю. ТЕПЛОВАЯ МОДЕЛЬ ПЛОСКОГО СОЛНЕЧНОГО ВОДОНАГРЕВАТЕЛЬНОГО КОЛЛЕКТОРА.

A thermal model of a flat solar water heating collector (PSVK) is proposed to determine its specific heat output depending on a predetermined value of the temperature of the received hot water. In contrast to the existing thermal models of PSVK in the world practice, in the proposed model the results of investigations for determining the mass-average temperature of the heat carrier (water), the coefficient of thermal efficiency and the average operating temperature of the surface of the radiation-absorbing heat exchange panels (LCPT), using the contactless method, depending on the effective coefficient thermal losses. In the determination of the coefficient of thermal losses, the effect of partial absorption and conversion into the heat of the collector body of total solar radiation passing through the transparent coating is taken into account, as well as the value of the average operating temperature of the LTPT surface and the ambient temperature. A practical example of the implementation of the proposed model is given and its reliability is proved.
Key words: solar radiation; flat solar water heating collector; beam-absorbing heat exchange panel.