Abstract
The technology of the energy pile for heat storage is to turn the concrete piles buried beneath the ground into a part of Ground Source Heat Pump System, and bury heat-transfer tubes in the foundation piles, which are regarded as heat wells. The structural stability and thermal conductivity of the concrete piles have been taken into full consideration in this report, whose experimental study on the mix of the material of concrete piles is in the process by making use of orthogonal method. By making nine pieces of fiber-reinforced concrete and test their compressive static load and Thermal conductivity, it proves to be that the third and fourth pieces have got the best mixing proportion. The optimized fiber-reinforced concrete has been improved not only in the mechanical properties but also in the thermal conductivity. On the basis of the experimental ratio, setting up experimental stage for fiber-reinforced energy pile for heat storage, and simulating and measuring the single pile have got the conclusion that by means of comparing the real data with the simulated data in the inner temperature of the heat storage devices, the data which is got at 0.65 meter’s deep is less interfered from the outside. This conclusion turns out to be of great value to the study on the process of energy pile for heat storage.
