Geothermal Energy

Science – Society – Technology

Table 1 Physical parameters of rocks, \(\sigma\) is the standard deviation (Weydt et al. 2020)

From: Production forecast and estimation of the recovery factor of the Los Humeros geothermal field, Mexico

Rock unit	\(\rho\) [kg m⁻³]	\(\sigma\)	\(\phi\)	\(\sigma\)	\({c}_{\mathrm{p}}\) [J kg⁻¹ K⁻¹]
Basalt lava	2420	–	0.32	0.01	761
Andesite	2150	–	0.22	0.04	784
Limestone	2320	0.01	0.14	0.06	793
Ash fall deposits	1170	–	0.51	–	861

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