Abstract
The article considers the problem of modeling a flat channel of a rectangular section of a solar water heater filled with water when it freezes to estimate the pressure in the channel. It is assumed that when water freezes, due to the density difference between the solid and liquid phases, the volume it occupies in the channel changes, and under the influence of the pressure difference between the external environment and the internal region, the channel walls are deformed. The theory of elastic cylindrical bending of a two-layer plate is used for modeling. Calculation relations are obtained for determining the pressure in the channel depending on the thickness of the freezing ice. An example of calculating the pressure in a channel of rectangular cross section when water freezes is given.
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