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Table 5 Key borehole properties in support of Fig. 2 (right)

From: Modelling an unconventional closed-loop deep borehole heat exchanger (DBHE): sensitivity analysis on the Newberry volcanic setting

Key Borehole section Name of section Thermodynamic properties
A. Insulated inner pipe Casg1 \(\rho = 2700 {\text{ kg}/{\text{m}}}^{3}\)
\(c_{\text{P}} = 470\,{\text{J}/{\text{kg}}}\,^{\circ }\text {C}\)
\(\varPhi =\) 0 (0\(\%\))
\(K =\) 0 \(\text {m}^{2}\)
\(\lambda =\) 0.01038 W/mKa
B./C. Casing Casg2/Casg3 \(\rho = 2700\, {\text{kg}/{\text{m}}}^{3}\)
\(c_{\text{P}} = 470\, {\text{J}/{\text{kg}}}\,^{\circ }\text {C}\)
\(\varPhi =\) 0 (0\(\%\))
\(K = 0\text { m}^{2}\)
\(\lambda = 46.1 \, {\text{W}/{\text{mK}}}\)
D./E. Cement Ceme1/Ceme2 \(\rho = 1830\, {\text{kg}/{\text{m}}}^{3}\)
\(c_{\text{P}} = 1900\, {\text{J}/{\text{kg}}}\,^{\circ }\text {C}\)
\(\varPhi =\) 0 (0\(\%\))
\(K = 0\text { m}^{2}\)
\(\lambda = 0.99 \, {\text{W}/{\text{mK}}}\)
  1. aInsulated inner casing, sourced from Falcone et al. (2018). Other parameters sourced from Morita et al. (1992a)