• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2002.10a
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• pp.160-161
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• 2002

최근에는 화석에너지의 고갈에 따른 대체에너지의 개발 필요성이 요구되면서 청정에너지의 개발이 필요시되고 있다. 파랑, 조석, 해류, 온도차와 같은 해양에너지는 청정 에너지로써 그 가용량이 인류가쓰기에 부족함이 없을 정도로 많은 에너지를 수용하는 에너지 자원이다. 우리나라 연안해역에서도 풍부한 해양에너지 자원이 부존하고 있으나 그 이용기술 개발에 대한 역사도 짧고 그 기술개발 역량도 적다. (중략)

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.4 no.3
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• pp.168-177
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• 1992

Some features of tidal energy horizontal flux in the ocean are considered. using the concept of “energy flux ellipses” which is a hodograph of momentary fluxes over a tidal semi-period. A number of characteristics of this ellipse are considered as well as some peculiarities of energy flux field in different types of tidal waves and their combinations (plane, Kelvin, Sverdrup, Poincare, amphidromic system). For forced tidal waves in equatorial channels some results are obtained explaining the dependence of energy flux direction on the channel dimensions.

• Journal of Environmental Science International
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• v.6 no.4
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• pp.313-322
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• 1997

In order to study the seasonal variation of kinetic and potential energy of residual flow field In Suyoung Bay of Korea, we calculated Its energy budget and compared It with the tidal energy there. The potential energy shows the large value In winter and spring and the small one In summer and early autumn when the density stratification Is developed. The kinetic energy of residual flow varies seasonally and the seasonally averaged kinetic energy of residual flow per unit area is 6.4$\times$$10^{-4}ergs s^{-1}cm^{-}2$. It Is mainly governed by the density-driven current with the exception of that In November when the kinetic energy of tide-induced residual current is larger than those of density-driven current and wind-driven current. An averaged traction of the kinetic energy of tide-Induced residual current, wind-driven current and density-driven current, which are the major components of residual flow, is 29.1%, 3.4%, 67.5%, respectively, to the kinetic energy of residual flow, The fraction of kinetic energy of residual flow, potential energy and tidal energy per unit area is 1.0 : 6.7$\times$$10^3$: 8.2$\times$$10^4$ respectively.

• 한국신재생에너지학회:학술대회논문집
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• 2005.11a
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• pp.342-350
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• 2005

우리나라 서해안 중부, 경기만 일대는 강한 조석과 잘 발달된 해만으로 인해 천혜의 조력자원 보고로 알려져 있으나, 1980년대부터 서 남해 연안역에 대한 대규모 매립과 항만개발 등으로 조력개발입지 자체가 상실되고, 조석체계도 변화되고 있다. 한편 조력에너지는 기존의 화석연료를 대체할 수 있는 개발가능한 신 재생 에너지 중에서 거의 유일하게 대규모로 개발이 가능한 것으로 평가되고 있어 개발시 기대효과는 매우 클 것이다. 이에 우리나라 서해안의 조력자원 부존량을 파악하고 주요 후보지에 대한 개발타당성 검토를 통하여 주요 조력자원 후보지를 타 개발로부터 보호하고, 민간참여를 유도하여 조력에너지 개발을 활성화하고자 본 조사를 추진하였다. 한반도 조력자원 개발타당성 검토를 위하여 1) 서해안의 주요 지점에 대한 조석특성을 조사하였고, 2) 주요 조력자원 후보지 위치 및 영역을 설정하였으며, 3) 조석체계변화예측 수치모형실험을 실시하였고, 4) 후보지별 발전소 평면배치계획을 수립하였으며, 5) 후보지별 연간발전량과 개략공사비를 산출하여 6) 후보지별 개략타당성 검토를 수행하였다. 검토결과 우리나라 서해안의 조력개발 가능규모는 215만kW 정도이며, 주요 후보지를 모두 개발할 경우 연간 3,826GWh의 전기를 생산할 수 있을 것으로 조사되었다. 또한 연간발전량 대비 순공사비 비율에 따르면 만 입구가 좁아 개발 경제성 확보가 유리한 가로림만을 우선 추진하고, 이후 인천만, 천수만 순으로 개발하는 것이 유리한 것으로 나타났다.

• 한국신재생에너지학회:학술대회논문집
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• 2011.11a
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• pp.160.2-160.2
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• 2011

바다를 가로막는 방벽이나 방조제의 배수갑문 또는 조력발전소의 수문과 같이 인공 해양구조물을 통하여 흐르는 고속 해류를 이용하여 발전하는 해류발전 방식에 있어서, 고속 해류에 적합한 수차터빈과 발전기의 특성을 알아보았다. 조석간만의 차가 큰 지역에 설치되는 인공 해양구조물을 지나는 해류는 인공 해양구조물 전후에 발생하는 해수의 위치에너지 차이가 운동에너지로 바뀌면서 조석간만의 자연현상에 의해 발생되는 조류의 속도보다 훨씬 더 빠르게 흐른다. 이론적으로 우리나라의 서해안의 조석간만의 범위 3~8m로부터 7.5~12m/s 정도의 고속 해류가 가능하다. 이러한 경우에 적합한 해류발전기는 수차터빈 날개지름의 크기가 5m에서부터 12m 이하이면서, 증속기어박스와 발전기, 유압시스템 및 냉각시스템 그리고 전력변환장치를 포함하는 발전시설들을 해수면 위에 설치하는 것이 바람직하다.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.12 no.2
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• pp.87-95
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• 2000

Spectral wave models are applied to the area of Kyung-gi bay with two different combinations. One combination assumes a constant tidal elevation over the whole region when applying the wave model to the area. In this case no tidal currents exist in any place. The other combination employs tide model as well as wave model so that tidal condition is defined at every computation time when wave modelling is carried out. Significant wave heights and wave directions are shown for these two cases. With these two different constraints of tidal variation, the results are checked and compared with each other. Both results are found significantly different from each other.

• Journal of the Korean Society of Marine Environment & Safety
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• v.19 no.6
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• pp.582-596
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• 2013

In order to estimate the tide and flow properties around the archipelago, around Dolsan, Choyak, Geogeom and Jindo which located in the southwestern waters of the south sea of Korea, tidal currents, residual flows and tidal energy dissipation were investigated by using 2-dimensional numerical model. The maximum speeds of tidal currents are small around Dolsando(31.92 cm/s) and large around Jindo(87.55 cm/s). The residual flow is fastest around Choyakdo where many channels and islands as compared with other study areas. The area around Jindo has the highest currents speed, but shows the flat movements. The margins between the maximum and the minimum dispersion rates of tidal energy in the areas are estimated and designate the order of values around Dolsando($392.6{\times}10^7$ erg/s), Geogeumdo($125.7{\times}10^7$ erg/s) and Jindo($23.1{\times}10^7$ erg/s) sequently. These circumstances are same as in the amplitude of M2 constituent. This means that rapid depth changes and narrow channels play an important role in tide and tidal currents energy in archipelago.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.25 no.6
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• pp.433-438
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• 2013

With the prospect of an increasing shortage of energy resources, there has been a growing interest in renewable alternative sources of energy. An increasing effort is being directed towards resolving the problems of extracting energy from the world's oceans, as they represent a vast potential source of renewable energy. This paper summarizes the extraction and conversion techniques of the ocean's energy resources, namely, energy derived from the ocean waves, tides, thermal gradients, and currents. For each energy extraction and conversion technique, case studies are discussed.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.4 no.2
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• pp.121-129
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• 1992

A two-dimensional numerical tidal model is formulated to reproduce tides in the northeastern Yellow-Sea, Seohan Bay. The model was formulated on spherical grid system with mesh resolution of 1' latitude by 4/3' longitude. As a first step, tidal distribution of four major tidal constituents are computed and compared with coastal observation. Independent tidal charts for the M$_2$, S$_2$, $K_1$, and $O_1$ tides were presented. Residual tidal currents and tidal energy flux were also computed.

• Transactions of the Korean hydrogen and new energy society
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• v.30 no.5
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• pp.465-472
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• 2019

This paper describes the resource assessment of theoretical potential of ocean energy including tidal current energy, tidal range energy, wave energy and ocean thermal energy in Korea to provide reliable basis for feasible development plan of ocean energy. Because of different characteristics of each ocean energy resources, the resource assessment methods were established considering characteristics of each ocean energy resources. The coastal region of Korea has been divided into 10 regions. The results show that tidal current energy is abundant in Incheon-Gyunggi and Jeollanam-do and tidal range energy is abundant in Incheon-Gyunggi. And wave energy is abundant in Jeollanam-do, Jeju and Gyeongsangbuk-do and there is ocean thermal energy in Gangwon-do and Gyeongsangbuk-do.