Influence of extreme fracture flow channels on the thermal performance of open-loop geothermal systems at commercial scale

Geothermal Energy

Science – Society – Technology

Table 3 Summary of the model parameters that remain constant in the 14-case sensitivity study described in Table 2

Parameter	Symbol	Values
Rock block height	H	100 m
Rock porosity	\(\phi\) _r	0.1
Specific heat capacity of the fluid	C_p.f	4184 J/(kg·K)
Specific heat capacity of the rock	C_p.r	1000 J/(kg·K)
Thermal conductivity of the fluid	k_f	0.6 W/(m·K)
Thermal conductivity of the rock	k_r	2.4 W/(m·K)
Rock density	\(\rho\) _r	2300 kg/m³
Reinjection temperature	T_inj	50 °C
Initial reservoir temperature	T_r	200 °C
Well radius	w_r	0.15 m