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Ground Thermal Response and Recovery after Heat Injection: Experimental Investigation (CROSBI ID 252621)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Boban, Luka ; Soldo, Vladimir ; Stošić, Jure ; Filipović, Eugen ; Tremac, Filip Ground Thermal Response and Recovery after Heat Injection: Experimental Investigation // Transactions of FAMENA, 42 (2018), SI-1; 39-50. doi: 10.21278/TOF.42Si104

Podaci o odgovornosti

Boban, Luka ; Soldo, Vladimir ; Stošić, Jure ; Filipović, Eugen ; Tremac, Filip

engleski

Ground Thermal Response and Recovery after Heat Injection: Experimental Investigation

Monitoring the ground thermal response to a constant heat flux input is common method for determination of effective ground properties needed for sizing the ground coupled heat pumps. In this work, the experimental procedure included two TRT’s with different average injection heat fluxes, 4.43 kW and 7.64 kW, applied to the same borehole. Recorded temperatures of fluids, circulated in an experimental borehole heat exchanger U-tube, are used to determine the ground thermal conductivity and the borehole thermal resistance with the infinite line source model (ILS). Additionally, thermocouples placed on the borehole wall up to the depth of 100 m enabled the measurement of temperature profiles of undisturbed ground and during the recovery period between the two TRTs. The results indicate that true undisturbed state after injected heat flux cannot be reached in short time while the use of higher injection heat flux reduces the influence of the ground's inhomogeneity on the results obtained.

borehole heat exchanger ; thermal response test ; ground thermal properties ; borehole thermal resistance

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Podaci o izdanju

42 (SI-1)

2018.

39-50

objavljeno

1333-1124

1849-1391

10.21278/TOF.42Si104

Povezanost rada

Strojarstvo

Poveznice
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