TY - JOUR
TI - Experimental determination of thermal conductivity of soil with a thermal response test
AU - Banjac Miloš J
AU - Todorović Maja
AU - Ristanović Milan R
AU - Galić Radoslav D
JN - Thermal Science
PY - 2012
VL - 16
IS - 4
SP - 1117
EP - 1126
PT - Article
AB - Optimal design of a borehole heat exchanger, as the outer part of a ground  source heat pump heating system, requires information on the thermal  properties of the soil. Those data, the effective thermal conductivity of  the soil λeff and the average temperature of the soil T0, enable us to  determine the necessary number and depth of boreholes. The determination of  thermal conductivity of the soil in laboratory experiments does not usually  coincide with the data under in-situ conditions. Therefore, an in-situ method  of experimental determination of these parameters, the so-called thermal  response test, is presented in this paper. In addition to the description of  the experimental procedure and installation overview, the paper describes  methods based on theory and presents their basic limitations, through the  presentation of experimental data. [Acknowledgment. This paper is made in a  scope of the project TR 33047 “Intelligent climate control systems to  achieve energy efficient regime in the complex conditions of exploitation”  funded by the Ministry of Education and Science of the Republic of Serbia.]