Physical Heat Transfer Model of Two-Phase Seasonal Cooling Device.

Plotnikov, A. A.

A physical heat transfer model of the vertical vapor-liquid seasonal cooling device (SCD) inserted into soil and filled with Freon is considered. In the model, it is assumed that heat exchange with soil occurs at a constant coolant temperature, which corresponds to Freon phase transition temperature and depends exclusively on Freon properties and gas pressure inside the pipe. At a condenser temperature below the phase transition temperature, the SCD functions as a liquid thermosiphon due to enthalpy variation. The physical model of the vapor-liquid SCD is realized as a module in the TEMPA software package representing an internal heat source. The package is designed to solve non-steady-state thermophysical problems by the enthalpy method while considering phase transitions of the bound moisture.

HEAT transfer; TRANSITION temperature; PHASE transitions; ENTHALPY; INTEGRATED software; STEADY state conduction; PIPE; THERMOSYPHONS

Soil Mechanics & Foundation Engineering, 2020, Vol 56, Issue 6, p445

0038-0741

Academic Journal

10.1007/s11204-020-09628-5