Evaluation of the Performance of a Heat Pipe for Pre-Frozen Soil around a Solar Support by a Numerical Method

The base of solar collector systems is usually installed in soil that contains moisture. In cold regions, due to the low ambient temperature, moisture freezes, creating a risk frost heave. This study analyzed heave mechanism power transmission and transformation foundation, clarified factors affecting way solve layer heave, proposed use heat transfer elements pre-frozen layers prevent foundation system from freezing. A numerical model ground exchange pipes was established. effects different types, content, effective radius operating time on performance were investigated by verified model. results show pipe pre-freezing technology can reduce drop thereby increasing temperature difference between far-field soil. terms ability delay decline reducing water content selecting certain clays increase degree speed temperature.