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RISS 인기검색어
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- 발행기관 : International Energy Initiative (검색결과 2 건)
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Song, S.Y.,Song, J.H.,Lim, J.H. International Energy Initiative 2014 Energy for sustainable development Vol.23 No.-
Ventilation is essential to maintaining a healthy indoor environment. However, during the summer and winter seasons, the temperature of the outdoor air can be so extreme that providing adequate ventilation requires a significant amount of energy. Consequently, an energy-efficient ventilation system is important for minimizing energy consumption. The thermal labyrinth is a ventilation system that pulls in outdoor air through an underground labyrinth-shaped concrete structure that is part of the building itself. Through heat exchange with the ground, this system can pre-cool and pre-heat the outdoor air in the summer and winter seasons, respectively. The goal of this study was to evaluate the energy performance of the thermal labyrinth ventilation system (TLVS) used in the Ewha Campus Center building recently built in Seoul, South Korea. By using the TLVS, the peak loads for the cooling and dehumidification and the heating and humidification of the outdoor air were found to be reduced by 47.6% and 41.2%, respectively. The annual energy need for conditioning outdoor air was reduced by 31.3%, and a payback period of 12.1years was calculated.
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In situ near-shore wave resource assessment in the Fiji Islands
Ram, K.,Narayan, S.,Ahmed, M.R.,Nakavulevu, P.,Lee, Y.H. International Energy Initiative 2014 Energy for sustainable development Vol.23 No.-
Directional wave measurements were carried out at two different near-shore locations in the Fiji islands with the help of an underwater pressure transducer - a Directional Wave Recorder. The primary site which is located in the west of the main island in Fiji has a moderate energy potential of 9.81kW/m at a depth of 15m. The second site which was the focus of past wave energy measurements was also studied and the new data along with previous measurements show high energy potential at this location. This site near Kadavu Island has a near-shore energy flux of around 28.78kW/m at a depth of 18 m. The directional spread of the waves and the nature of their occurrence are presented. Additionally, the sea states during a category 2 tropical cyclone passing about 200km from the measurement location are discussed.
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