Question

In certain large geographic regions, the underlying rock is hot. Wells can be drilled and water circulated through the rock for heat transfer for the generation of electricity. (a) Calculate the heat transfer (in J) that can be extracted by cooling 1.10 km3 of granite by 106°C. (The density of granite is 2.7 ✕ 103 kg/m3.) J (b) How long (in y) will it take for heat transfer at the rate of 250 MW, assuming no heat transfers back into the 1.10 km3 of rock by its surroundings? y

Answer 1