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Advances in the determination of the thermal ground properties for the design of borehole heat exchangers using thermal response tests.

Number: 456

Author(s) : CAZORLA-MARÍN A., MAGRANER T., MONTAGUD MONTALVÁ C., MONTERO A., CORBERÁN J. M., MARTOS J.

Summary

In order to correctly design a Borehole Heat Exchanger (BHE), it is necessary to have a precise determination of the thermal properties of the ground. Reliable values of the effective thermal conductivity of the soil, the BHE thermal resistance, and the temperature of the undisturbed soil allow to properly size the length, geometry and distribution of the BHEs field. In-situ Thermal Response Tests (TRTs) were developed with this objective. With time, computerized tools have been developed to allow rapid estimation of the properties based on a set of data acquired in short-term tests. This contribution illustrates the use of one tool, implemented in TRNSYS and based on the B2G model, for estimating the ground properties in a BHE located at the Polytechnic University of Valencia. Additionally, the impact of groundwater flow on the results obtained with the conventional analysis methodology of a TRT in the same BHE is analysed.
 

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Pages: 7

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Details

  • Original title: Advances in the determination of the thermal ground properties for the design of borehole heat exchangers using thermal response tests.
  • Record ID : 30030578
  • Languages: English
  • Source: XI Congreso Ibérico y IX Congreso Iberoamericano de Ciencias y Técnicas del Frío, CYTEF 2022.
  • Publication date: 2022/04

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