INVESTIGATION OF INFLUENCE OF THERMOPHYSICAL CHARACTERISTICS OF SOIL MASSIF ON THE VALUE OF THERMAL ENERGY TAKEN BY ENERGY EFFICIENT PILE

The depletion of traditional fossil energy sources leads to an increasing development of non-traditional energy sources. One of the promising directions of alternative energy is the use of low-potential energy of the soil massif for heating buildings and structures for various purposes. Heat extraction is possible through the use of energy-efficient Foundation structures. However, their rational design is impossible without a careful assessment of a large number of factors that affect the potential value of thermal energy extracted from the earth's thickness. The purpose of this work was to build a whole methodology to assess the degree of influence of thermophysical characteristics of the soil mass, in particular, such as heat capacity and thermal conductivity, on the amount of heat energy selected energy-efficient pile. The formulation and analysis of the numerical experiment to identify the desired dependencies. The matrix of experiment planning is made. The numerical simulation of the energy-efficient pile of different geometric parameters in different soil conditions is performed. Statistical processing of the obtained experimental data was carried out. A quadratic regression equation was developed to determine the amount of heat through the side surface of the pile depending on the length of the pile, its diameter, heat capacity and thermal conductivity of the soil. The analysis of this equation for the purpose of estimation of degree of influence of initial thermophysical parameters of soil on value of thermal energy of the selected pile is carried out.