Development of the renewable energy policy of hydrothermal energy in using drinking water in South Korea
In 2017, The Renewable 3020 policy of the new government was announced to comply with the Paris Climate Change Accord to reduce Greenhouse Gas (GHG) emissions from the use of fossil fuels. Although the new government''s energy conversion policy has been implemented, the electricity production proportion of renewable energy is currently at 2.2% (2016 IEA), which is insufficient for the target 20%. The share of total renewable energy is lower than other developed countries.
According to the government''s 3020 Renewable Energy Implementation Plan (Ministry of Trade, Industry and Energy 2017), renewable energy, such as waste, wood fillet, etc., based on fuel combustion will be minimized and reconstituted with solar (57%) and wind (27%). As most of renewable energy sources are composed of 84% solar and wind power, it is necessary to consider the problems due to bias. However, these power sources can lower grid system reliability because of fluctuations by weather. So we need to find other renewable energy sources for energy stability.
Hydrothermal Energy (HTE) is environment-friendly energy because it does not burn fuel when it gets heat. It is also known to reduce energy cost by 20-50% compared to existing electricity and fossil fuel by being used for building cooling and heating. However, the potential of drinking water, classified as unused energy, as source of renewable energy is untapped due to lack of government support. The purpose of this research, therefore, is to investigate the possibility and advantage of drinking water as a renewable energy source in the wide-area waterworks system and to propose policies to expand Drinking Water Thermal Energy (DWTE).
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