Question 1 a) Describe how hydraulic fracturing can improve the energy yield in enhanced geothermal system (EGS)? (8 mar
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Question 1 a) Describe how hydraulic fracturing can improve the energy yield in enhanced geothermal system (EGS)? (8 mar
Question 1 a) Describe how hydraulic fracturing can improve the energy yield in enhanced geothermal system (EGS)? (8 marks) b) Briefly explain why most shallow geothermal systems have to be complemented by back-up heat-supplies or boilers for operation, but most deep geothermal systems do not need back-up. (8 marks) c) State two reasons why fresh water is not suitable as the medium for closed-loop heat extraction for geothermal systems. (4 marks) (Total: 20 marks)