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복수의 열에너지 프로슈머가 존재하는 열 네트워크에서의 양방향 열공급 실증운전 결과
김민휘(Min-Hwi Kim),김득원(Deuk-won Kim),이동원(Dong-Won Lee),허재혁(Jaehyoek Heo) 대한설비공학회 2021 설비공학 논문집 Vol.33 No.9
In this study, a small-scale thermal network with multiple thermal energy prosumers was configured and a bi-directional heat supply operation for thermal energy sharing or heat trading was experimentally investigated. The conventional centralized thermal network was remodeled to bi-directional thermal network and two buildings, among the seven buildings, were retrofitted to the heat prosumer buildings. The heat prosumer buildings, including an absorption heat pump system and a geothermal heat pump system, were connected to four buildings devoid of heat production facility under the cooling and heating and hot water supply thermal network. Through this research work, it was proved that the bi-directional heat supply could be performed during five weeks cooling and heating operation in summer and winter. It was also found that the proposed bi-directional heat supply network construction method could be used to implement heat transactions between buildings on a heat network with multiple heat energy prosumers.
김민휘(Min-Hwi Kim),이동원(Dong-Won Lee),김득원(Deuk-won Kim),허재혁(Jaehyoek Heo) 대한설비공학회 2021 설비공학 논문집 Vol.33 No.1
In this study, the existing small-scale centralized-district cooling and heating system was retrofitted to form a small-scale heat network with two thermal-energy prosumers, and we empirically analyzed the feasibility of this bi-directional thermal network. In the experimental test, we identified the operation status of a small-scale thermal network based on existing solar thermal and geothermal heat pumps and modified it to form a bi-directional thermal-network system. The bi-directional heat supply was created by calibrating two thermal-energy prosumers to supply heat at predetermined times and converting the absorption heat pump in another building into another thermal prosumer. This experiment confirmed that bi-directional thermal transfer can be accomplished in a thermal network as well as in the conventional heat-supply method. The results of these empirical experiments also showed that the use of bi-directional thermal networks in heat transactions is economically feasibility and eco-friendly.