• 제목/요약/키워드: Small Plant

검색결과 2,225건 처리시간 0.031초

하수처리수를 이용한 소수력발전소 설계 및 성능예측 (Design and Performance Prediction of Small Hydropower Plant Using Treated Effluent in Wastewater Treatment Plant)

  • 이철형;박완순;김원경;김정연;채규정
    • 한국태양에너지학회 논문집
    • /
    • 제33권2호
    • /
    • pp.78-83
    • /
    • 2013
  • A methodology to predict the output performance of small hydro power plant using treated effluent in waste water treatment plant has been studied. Existing waste water treatment plant located in Kyunggi-Do were selected and the output performance characteristics for these plants were analyzed. .Based on the models developed in this study, the hydrologic performance characteristics for SHP sites have been analyzed. The results show that the flow duration characteristics of small hydropower plant for waste water treatment plant have quite differences compared with small hydropower plant for the river. As a result, it was found that the developed model in this study can be used to analyze the output characteristics for small hydro power in waste water treatment plant. Additionally, primary design specifications such as design flowrate, capacity, operational rate and annual electricity production were estimated and discussed. It was found that the models developed in this study can be used to decide the design performance of small hydropower plant for waste water treatment plant effectively.

양어장 방류수를 이용한 해양소수력발전소 구축에 관한 연구 (Construction of Marine Small Hydro Power Plant using Discharge Water of Fish Farm)

  • 황영철;최영도
    • 한국유체기계학회 논문집
    • /
    • 제16권5호
    • /
    • pp.11-17
    • /
    • 2013
  • This study is aimed to construct a marine small hydro power plant using discharge water of fish farm in Jeju Haengwon-ri. The difference of design methods between marine small hydro power plant and land small hydro power plant is to consider the tides. Moreover, ground condition should be examined because gushout sea water comes out from the ground at high tide in Jeju as the ground of Jeju beach consists of basalt stone. From the field test of the turbine generator after construction of the power plant, output power and efficiency of the turbine generator shows good conformance to the required conditions.

소규모 플랜트 기자재의 고장밀도함수가 가용도에 미치는 영향 평가 (A Study on the Availability Evaluation with Failure Density Function of Equipment of Small-scale Plant)

  • 이홍철;황인주
    • 한국유체기계학회 논문집
    • /
    • 제19권3호
    • /
    • pp.33-36
    • /
    • 2016
  • The investigation on the verification of availability simulation for small-scale plant has been carried out. This study focuses on the availability variation induced by number of equipment and iteration with failure density function. The equipment classification of small-scale plant and failure type and the methodologies on Monte-Carlo simulation are established. The availability deviation with programs showed under Max. 1.7% for the case of normal function. This method could be used to availability evaluation of small-scale plant, but calibration of the failure density function is necessary for general application.

하수처리장 방류수를 이용한 소수력발전 성능분석 (Performance Anaysis of Small Hydropower Plant Using Treated Effluent in Wastewater Treatment Plant)

  • 이철형;박완순
    • 한국태양에너지학회:학술대회논문집
    • /
    • 한국태양에너지학회 2012년도 춘계학술발표대회 논문집
    • /
    • pp.494-497
    • /
    • 2012
  • A methodology to predict the output performance of small hydro power using treated effluent in wastewater treatment plant has been studied. Existing plant located Kyunggi-Do were selected and the output performance characteristics for these plants were analyzed. As a result, it was found that the developed model in this study can be used to analyze the output characteristics for small hydro power in wastewater treatment plant. Additionally, primary design specifications such as design flowrate, capacity, operational rate and annual electricity production were estimated and discussed.

  • PDF

방류수의 수위 및 유량 분석을 통한 해양 소수력 성능평가 (Performance Evaluation of Ocean Small Hydropower Plant by Analyzing Water Level and Flow Rate of Circulating Water)

  • 강금석;김지영;유무성
    • 신재생에너지
    • /
    • 제5권3호
    • /
    • pp.32-39
    • /
    • 2009
  • The Samcheonpo ocean small hydropower plant (SHP) has a special feature of using marginal hydraulic head of circulating water system of fossil fuel power plant as a power source and having the characteristics of general hydropower generation and tidal power generation as well. Also, it contributes to reducing green house gases and developing clean energy source by recycling circulating water energy otherwise dissipated into the ocean. The efficiency of small hydropower plant is directly affected by effective head and flow rate of discharged water. Therefore, the efficiency characteristics of ocean hydropower plant are analyzed with the variation of water level and flow rate of discharged water, which is based on the accumulated operation data of the Samcheonpo hydropower plant. After the start of small hydropower plant operation, definite rise of water level was observed. As a result of flow pattern change from free flow to submerged flow, the instability of water surface in overall open channel is increased but it doesn't reach the extent of overflowing channel or having an effect on circulation system. Performance evaluation result shows that the generating power and efficiency of small hydropower exceeds design requirements in all conditions. Analysis results of CWP's water flow rate verify that the amount of flowing water is measured less and the highest efficiency of small hydropower plant is achieved when the effective head has its maximum value. In conclusion, efficiency curve derived from water flow rate considering tidal level shows the best fitting result with design criteria curve and it is verified that overall efficiency of hydropower system is satisfactory.

  • PDF

모델 기반 중소형 플랜트 형상관리 시스템의 효과성 평가 사례 (A case on the Evaluation of the Effectiveness of Model based Configuration Management System for Small/ Medium-Sized Plant)

  • 하가연;김진일;신중욱;염충섭
    • 시스템엔지니어링학술지
    • /
    • 제17권1호
    • /
    • pp.107-113
    • /
    • 2021
  • Plant Configuration Management(CM) is an activity to maintain consistency of design requirements, physical configuration, facility configuration information throughout the life cycle of the plant by systematically managing changes that occur during the plant design and operation process. Conformity between information must be ensured not only in the design stage, but also in the case of design changes in the operation and maintenance stages, and thus a computer system capable of efficiently managing them is required. In particular, in consideration of an application to small and medium-sized domestic plants, a computer system that can support configuration management at a low cost is needed. Accordingly, in this study, a configuration management system has been developed to support the management of plant design information and change procedures in the operation stage of small and medium-sized plants. Here, a case for quantitatively evaluating the effectiveness of the developed system is described.

구미하수처리장 방류구에서의 소수력발전 설치 및 운영에 관한 연구 (Feasibility Study on the Construction of Small Hydro-Power Plants in Gumi Sewage Treatment Plant Discharge Point)

  • 나동훈;이승환
    • 상하수도학회지
    • /
    • 제24권2호
    • /
    • pp.173-181
    • /
    • 2010
  • This study was conducted to investigate the possible installation of small hydro-power plant at the discharge point of Gumi sewage treatment plant (STP) using treated wastewater. Sufficient amount of water to transfer to electric power and the selection of proper location are two essential elements for the construction of small hydro-power facility. Preliminary analysis based on site visit and existing data in Gumi STP were made. Capacity of the small hydro-power plants and exact location were determined by geomorphological condition and flow duration characteristics. Flow duration characteristics and its duration curve were identified using monthly rainfall data in Gumi STP. Relevant facts of small hydro-power system in other STP were referred to adopt to Gumi STP situation. Flowrate of treated effluents and effective head between flow chamber and the location of hydraulic turbine in Gumi STP are found to be $3.70m^3$/sec and 3.5m respectively. Electric generation rate based on this feasibility study was estimated to be 86.3kW/h. Yearly electric generation rate was expected to be 932.4MMh. Proposed small hydro-power plant construction in Gumi STP is to be reasonable.

농촌 지역에서 유입 유량이 소규모 하수처리장 처리 효율에 미치는 영향 (Effect of sewage flow on treatment efficiency of small scale wastewater treatment plant in rural community)

  • 임지열;길경익
    • 한국습지학회지
    • /
    • 제18권3호
    • /
    • pp.267-274
    • /
    • 2016
  • 농촌 지역 하수도 보급은 하천, 호소 및 습지와 같은 수계 수질 보호를 위해서 반드시 필요하다. 또한 안정적인 소규모 하수처리장 운영을 위해서는 유입 유량과 농도의 변화가 큰 소규모 하수도 특성을 고려해야 한다. 본 연구에서는 봉화군 18개의 소규모 하수처리장 운전 결과를 통해 유입유량비 (유입 유량 / 설계 유량) 특성, 소규모 하수처리장 처리 효율에 미치는 영향과 적정 유입유량비 산정에 관한 연구를 수행하였다. 분석 결과 유입유량비는 여름철에 가장 높은 것으로 나타난 반면, 유입 하수 농도는 가을철과 겨울철에 높은 것으로 나타났다. 유입유량비가 증가할수록 처리 효율이 증가하는 경향을 보였으며, 영양염류 처리 효율이 유기물과 부유물질 처리 효율에 비해 민감한 영향을 받는 것으로 나타났다. 안정적인 소규모 하수처리장 처리 효율을 위해서는 유입유량비 0.8 이상을 유지해야 할 것으로 판단된다.

송아지에서 발생한 중증 크립토스포리듐 증 증례 (Fatal cryptosporidiosis in a calf)

  • 백강현;이현경;이경현;김하영;박중원;이보람;허지웅;이명헌;배유찬
    • 대한수의학회지
    • /
    • 제54권4호
    • /
    • pp.257-260
    • /
    • 2014
  • A calf suffering from diarrhea was admitted to the Animal and Plant Quarantine Agency for diagnostic evaluation. Postmortem examination revealed that the mesenteric lymph node was enlarged and small intestine wall was thin. Microscopically, a large number of small round organisms were attached to the small intestine villi. Villous atrophy and proprial neutrophil infiltration were also observed. Based on modified Ziehl-Neelsen staining, electron microscopy, and ELISA results, the calf was diagnosed with fatal cryptosporidiosis.