• 자원환경지질
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• 제44권6호
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• pp.513-523
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• 2011

이 연구에서는 최근에 발표되고 국제기구에 의해 공인된 protocol에 따라 인공 지열 저류층 생성 기술(EGS)을 통한 우리나라 지열발전의 잠재량을 평가하였다. 잠재량 추정에 필요한 입력 자료인 암석 밀도, 비열 및 열전도도는 1,516개 암반 시료의 측정값을 이용했으며, 열생산율은 180개 자료, 지열류량은 352개 자료, 그리고 지표면 온도는 54개 자료를 사용하였다. 내륙을 34,742개의 $1'{\times}1'$ 크기 격자로 나누어 3-10 km 깊이 범위에 걸쳐 1 km 깊이 구간별로 온도 분포를 계산하고 이로부터 열에너지 부존량을 계산하였다. 지하 3-10 km 범위의 이론적 잠재량은 6,975 GW로 계산되었고 이는 2010년 우리나라 총 발전용량인 76 GW의 약 92배에 달한다. 기술적 잠재량은 3-6.5 km 깊이, 개발행위가 가능한 지역만을 고려하고 또한 암반으로부터의 열 회수율(0.14)과 발전시설의 온도 특성까지 포함해서 산출되었다. 온도하강요소 $10^{\circ}C$를 고려할 때 총 기술적 잠재량은 19.6 GW로 나타나고 있다. 만약 온도하강요소를 경제적 잠재량에 포함시킬 수 있도록 제외한다면 기술적 잠재량은 56 GW로 늘어난다.

• 한국지구물리탐사학회:학술대회논문집
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• 한국지구물리탐사학회 2003년도 Proceedings of the international symposium on the fusion technology
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• pp.470-475
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• 2003

KIGAM (Korea Institute of Geoscience and Mineral Resources) launched a new project to develop the low-enthalpy geothermal water in the area showing high geothermal anomaly, north of Pohang city, for large-scale space heating from KORP (Korea Research Council of Public Science & Technology) funding. Surface geologic and geophysical surveys including Landsat TM image analysis, gravity, magnetic, Magnetotelluric (MT) and controlled-source audio-frequency MT (CSAMT) and self-potential (SP) methods have been conducted and the possible fracture zone was found that would serve as deeply connected geothermal water conduit. By the end of 2003, two test wells of 1 km depth will be drilled and various kinds of borehole survey along with additional MT measurements and sample analysis will follow and then the detailed subsurface condition is to be characterized. Next step would be drilling the production well of 2 km depth and all further steps remain to be determined depending upon the results of the test well studies.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2006년도 춘계학술대회
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• pp.360-363
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• 2006

Regester & Larkin(2005) suggest the issue and risk lifecycle analysis method in risk management, made up of the potential, emerging, current, crisis, and dormant stages. Investment on New & Renewable Energy is meaningful in effect ive risk management for diminishing or reducing the shock of a energy current, at the potential stage. In this study, we survey the risk of traditional fossil fuel projects and develop the risk analysis model for new & renewable energy projects specially geothermal energy resources and gas-hydrate resources.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2006년도 하계학술발표대회 논문집
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• pp.209-214
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• 2006

In this study, application of groundwater thermal energy by use of riverbank filtration(RBF) system is reviewed and checked as an energy resources. Also, the cooling and heating system using RBF was developed in Chang-Won Waterwork site to examine the feasibility in real operation of the system. We estimates the roughly overall energy obtained from RBF system if the system is used in cooling and heating. The water temperature and room temperature have been monitored to evaluate the efficiency of the system and the preliminary results show that the geothermal energy obtained by RBF could be adopted in cooling and heating energy source efficiently.

• 한국지구과학회지
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• 제32권6호
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• pp.654-664
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• 2011

본 연구에서는 석모도 지역의 지열에너지 개발에 중요한 심부 파쇄대 시스템에 대한 보다 광범위하고 정밀한 조사를 위하여 2005-2006년에 수행되었던 44 측점의 탐사 영역을 확대하여 추가로 36 측점에서 자기지전류 및 가청주파수 자기지전류 심부물리탐사 현장 탐사 자료를 획득하였다. 이전의 자료와 함께 모든 자료는 격자상으로 분포하도록 설계하여 관심 영역 내에서 2차원 및 3차원 역산을 통하여 지질 구조 해석을 실시하였다. 역산 해석 결과 지열수가 발견된 시추공 주변으로 파쇄대로 추정되는 최소 2 조의 큰 전기비저항 불연속면을 영상화하였는데, NNE-SWW(북북동-남서) 방향으로 발달한 불연속대는 지열수가 발견된 시추공 방향으로 발달되어있고, 이와 함께 인접한 바다로부터 EW(동-서) 방향으로 불연속면이 발달되어 있음을 볼 수 있었다.

• 분석과학
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• 제17권4호
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• pp.308-314
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• 2004

전자소재의 원료물질 혹은 보호물질에 사용되는 고분자수지내에 포함된 U, Th과 이들의 붕괴산물인 딸핵종과 같은 방사성 불순물이 있는 경우 전자소자의 오작동을 일으키는 주 요인으로 알려져 있으며, Na, Cl, Fe 등과 같은 이온성 불순물은 소자의 수명을 단축시키는 것으로 알려져 있어 극미량 무기불순물의 정확한 분석이 필요하다. NAA의 경우, 위와 같은 분석의 문제점인 시료전처리가 필요하지 않은 비파괴 분석이 가능하여 가장 적합한 분석법으로서 고분자수지중의 극미량 불순물 분석을 위한 시료 전처리법과 최적 분석방법을 개발하였다. 이 방법을 사용하여 전자소재의 밀봉보호재로 널리 이용되고 있는 에폭시수지와 페놀수지중의 극미량 무기 불순물을 분석기술을 개발하였으며, 그 결과 U, Th과 이온성 불순물인 Cl, Fe, Na 외에 20가지의 미량 무기불순물을 분석할 수 있었다.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2005년도 춘계학술대회
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• pp.693-696
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• 2005

KIGAM (Korea Institute of Geoscience and Mineral Resources) launched a new project to develop the low-temperature geothermal water in the area showing high geothermal anomaly, north of Pohang city, for large-scale space heating. Surface geologic and geophysical surveys including Landsat 1M image analysis, gravity, magnetic, Magnetotelluric (MT) and controlled-source audio-frequency MT (CSAMT), and self-potential (SP) methods have been conducted and the possible fracture zone was found that would serve as deeply connected geothermal water conduit. In 2004, two test wells of 1.1km and 1.5km depths have been drilled and various kinds of borehole survey including geophysical logging, pumping test, SP monitoring, core logging and sample analysis have followed. Temperature of geothermal water at the bottom of 1.5km borehole reached over $70^{\circ}C$ and the pumping test showed that the reservoir contained huge amount of geothermal water. Drilling for the production well of 2 km depth is on going. After test utilization and the feasibility study, geothermal water developed from the production well is going to be provided to nearby apartments.

• Journal of Microbiology
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• 제41권2호
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• pp.152-156
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• 2003

Through enrichment on two nutrient agars, 57 Thermus isolates were recovered from 15 hot spring samples taken from the Rehai geothermal area, Tengchong, China. Unique growth characteristics were observed when the strains were transferred from YIM14 medium to Thermus medium. Phylogenetic analysis showed that the 16S rDNA sequences of the isolates and clones from the Rehai geothermal area farmed a monophyletic group on the phylogenetic tree. A secondary structure comparison showed that their 16S rRNAs have unique secondary structure characteristics.

• 한국지하수토양환경학회지:지하수토양환경
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• 제19권2호
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• pp.25-37
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• 2014

The volcanic type of geothermal water is linked intimately to active or potentially active volcanoes and takes place near the plate boundaries. In contrast to the volcanic type, the geothermal water in Korea has a non-volcanic origin. Korea's geothermal water is classified into the residual magma (RM) type and deep groundwater (DG) type according to the criterion of $35^{\circ}C$. This study reviewed the relationship between the physical and chemical features of the 281 geothermal water sources in South Korea in terms of the specific capacity, water temperature, and chemical compositions of two different basements (igneous rock and metamorphic rock) as well as the geological structures. According to the spatial relationship between the geothermal holes and geological faults, the length of the major fault is considered a key parameter determining the movement to a deeper place and the temperature of geothermal water. A negligible relationship between the specific capacity (Q/s) and temperature was found for both the RM type and DG type with the greater specific capacities of the RM- and DG-igneous types than the RM- and DG-metamorphic types. No relationship was observed between Q/s and the chemical constituents ($K^+$, $Na^+$, $Ca^{2+}$, $Mg^{2+}$, $Zn^{2+}$, $Cl^-$, $SO_4{^{2-}}$, $HCO_3{^-}$, and $SiO_2$) in the DG-igneous and DG-metamorphic types. Furthermore, weak relationship between temperature and chemical constituents was found for both the RM type and DG type.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2009년도 제40회 하계학술대회
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• pp.1146_1147
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• 2009

This experiment is significant because we can provide information by measuring effect of energy saving for whom plan to install a geothermal heat & cooling system. The result shows geothemal system can save about 50% of energy(heating : 35%, cooling : 60%) and we verified that when using curtain can help saving 4~12% of energy additionally.