Analysis of hydrothermal energy potential of spring water in Jeju Island: Current status and perspectives

초록

Recently, abnormal climate events are occurring more frequently due to the increase in greenhouse gases. To solve this problem, we are gradually increasing the amount of new and renewable energy used. Among new and renewable energies, hydrothermal energy has the advantage of using the thermal energy of water, reducing energy consumption by up to 20-50% compared to conventional heating equipment. Since spring water is widely distributed on Jeju Island and there is a large amount of runoff, the potential amount for hydrothermal energy was evaluated using the hydrogeological characteristics. There are approximately 646 spring waters on Jeju Island, and we calculated the potential amount of hydrothermal energy for the spring waters that have been confirmed to have leaked. The total discharge of spring water was 480,504 m3/day, the theoretical potential was 27,807 MW, and the technical potential was estimated to be 27,807 MW for heating and 22,561 MW for cooling. Although Jeju Island has the potential amount of hydrothermal energy for spring water, it can easily handle the demand for cooling and heating energy, but in order to actually use it, additional institutional support and management of spring water are required.

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