Key words: seasonally operating cooling device, modeling, thermal interaction, permafrost , numerical calculations.
Soil freezing halo near two seasonally operating cooling devices is determined. Features of geometrical parameters of the condenser and evaporator of the seasonally operating cooling device and also the heterogeneity of soil are taken into account in the calculation. An algorithm, allowing to simulate the heat exchange processes of several seasonally operating cooling devices and soil, is created by the results of the developed technique.