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  3. The diagram below shows how geothermal energy is used produce electricity. Summarise the information by selecting and reporting

The diagram below shows how geothermal energy is used produce electricity. Summarise the information by selecting and reporting

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问题     The diagram below shows how geothermal energy is used produce electricity. Summarise the information by selecting and reporting the main features and make comparisons where relevant.
    Write at least 150 words.
   
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答案 The flow chart shows the entire process of exploiting geothermal energy for electricity generation. In the first stage, cold water stored in a container on the ground is pumped down through an injection well, which is 4.5 kilometers in length, to reach the geothermal zone. Here comes the second stage: the pumped water is heated as it flows through hot rocks, and subsequently pumped up, in the next phrase, by a production well to a condenser. The other parts of the process are above ground. In the condensation stage, the heated water produces steam, which runs a turbine. It is the machine which can power a generator to create electricity, the end product of the whole procedure, and the power generated is to be transferred to the grid in the final stage. Overall, a geothermal power plant operates by using water as a medium to convert geothermal energy into electricity, and the whole process involves five steps in total.
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