Abstract
Recently, the Korean government has been carrying out projects to construct several large scale horticulture facilities. However, it is difficult for an energy supply to operate stably and economically with only a conventional fossil fuel boiler system. For this reason, several unused energy sources have become attractive and it was found that power plant waste heat has the greatest potential for application in this scenario. In this study, we performed a feasibility assessment of power plant waste heat as an energy source for horticulture facilities. As a result, it was confirmed that there was a sufficient amount of energy potential for the use of waste heat to supply energy to the assumed area. In Dangjin, an horticultural area of 500 ha could be constructed by utilizing 20% of the energy reserves. In Hadong, a horticulture facility can be set up to be 260 ha with 7.4% of the energy reserves. In Youngdong, an assumed area of 65 ha could be built utilizing about 19% of the energy reserves. Furthermore, the payback period was calculated in order to evaluate the economic feasibility compared with a conventional system. The initial investment costs can be recovered by the approximately 83% reduction in the annual operating costs.
Highlights
IntroductionAs industrial development and greenhouse gas emissions have caused global climate changes, countries around the world have been searching for detailed measures and long term solutions to reduce environmental damage
Renewable energy supply in rural areas has been mainly achieved by supporting the use of geothermal heat pump systems and wood pellet boilers
Possible horticulture scale was dealt with the power plant waste heat energy reserves and the nearby farmland
Summary
As industrial development and greenhouse gas emissions have caused global climate changes, countries around the world have been searching for detailed measures and long term solutions to reduce environmental damage. South Korea, one of the world’s 10 major energy consuming countries, has been promoting national development strategies for green and sustainable economic growth. As a part of the energy policy for green growth, the Korean government has shown recent interest in the energy independence of rural areas by replacing existing energy sources with renewable energy sources. Renewable energy supply in rural areas has been mainly achieved by supporting the use of geothermal heat pump systems and wood pellet boilers. The government has been creating several large scale protected horticulture estates of more than 100 ha in size by utilizing reclaimed land, which is a promising measure for national interests through the export of high value crops
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