and borehole thermal resistance as parameters. An in-situ thermal response test provides a method to estimate these two … for the late-time period of the in-situ test. With this model one can estimate the soil thermal conductivity and borehole … length of the borehole. The analysis also indicates a p-linear averaging method gives smaller errors than the mean …

A numerical model for the simulation of temperature changes in a borehole heat exchanger (BHE) with fluid circulating …

borehole thermal resistance. One popular method to estimate the thermal parameters is the interpretation of in situ thermal …. The Tm response corresponds to the physically unrealistic hypothesis of constant heat flux along a borehole. Using a 3D … finite element model of the borehole, we show that Tm does not correspond to the fluid mean temperature within the borehole …

parameters, knowledge of the thermal properties of the soil (thermal conductivity, borehole thermal resistance and undisturbed … soil temperature). In situ determination of these properties can be done by installing a vertical borehole heat exchanger … the thermal conductivity and borehole thermal resistance. The detailed study of ground properties in different regions of …

properties of the soil (thermal conductivity λ and borehole thermal resistance Rb), which can be done performing the so … shallow single borehole. The tests are the first of its kind performed in South America. An installation for realizing the … Borehole Thermal Energy Storage (BTES) was prepared at the ‘Solar Energy Laboratory’ of the Technical University Federico Santa …

/m·K with the mean of 2.55 W/m·K. The corresponding borehole thermal resistances were also obtained in the range between 0 …

This paper presents a numerical and experimental study on the evaluation of borehole thermal resistance with TRT … type GHEs (ground heat exchangers). Field TRTs were carried out for 48 h on a closed-loop vertical type borehole, and an … to estimate borehole thermal resistance and the TRT results were compared. Field TPTs were also conducted for 100 h …

In this paper the results of testing thermal parameters of the rock environment and measurement of borehole temperature … profiles of the newly constructed experimental underground heat storage (BTES (Borehole Thermal Energy Storage)) in Paskov …