heat losses through building foundation, building foundation thermal insulation, building foundation thermal conductance
Using the shallow foundation to compare with the traditional deep foundation allows reduction of the expenses on building materials, work time and the cost of the project. But in the cold climate shallow foundations require additional thermal insulation. EPS plate placed directly under the foundation is one of these methods.
Steady-state heat transfer.
Temperature inside (upper edge of the foundation): T1 = +20 °C;
Temperature outside (ground surface): T2 = -20 °C;
Compare thermal resistance of the shallow foundation with the insulation plate and without the plate.
Thermal resistance can be calculated as a ratio of the temperature difference value and the heat flux value.
Insulation plate reduces heat losses by 10%:
|Design||Temperature difference (°C)||Heat flux (W)||Thermal resistance(°C/W)|
Temperature distribution in the shallow foundation: