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한국신·재생에너지학회> 신재생에너지> 부유식 해상태양광 발전을 위한 단위 플랫폼 구조물의 실해역 성능평가

KCI등재

부유식 해상태양광 발전을 위한 단위 플랫폼 구조물의 실해역 성능평가

Field Performance Test of Unit Platform Development for Offshore Floating Photovoltaic Power Structure

나경원 ( Kyoung Won Na ) , 추진훈 ( Jinhun Choo ) , 이병준 ( Byung Jun Lee )
  • : 한국신·재생에너지학회
  • : 신재생에너지 17권3호
  • : 연속간행물
  • : 2021년 09월
  • : 16-23(8pages)
신재생에너지

DOI


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Nomenclature
Subscript
1. 서 론
2. 실증시험
3. 결 과
4. 결 론
감사의 글
References

키워드 보기


초록 보기

Recently, the Korean government announced a plan to activate renewable energies, with focus on clean energy sources such as solar and wind power as the core and the goal of achieving carbon neutrality by 2050. Unlike other photovoltaic (PV) systems, offshore PV installations are advantageous for large-scale expansion because of the ease of securing sites; they also enable lowering the power generation costs based on construction of large-scale power facilities of megawatt class or higher owing to low noise and landscape damage. However, any power generation should proceed with consideration of the special environmental conditions of the ocean. Above all, when installing large-scale facilities, it is important to reduce fluctuations of the structure and secure stability to actively respond to waves. This study is concerned with the development of a floating body technology that actively responds to waves so as to enable commercialization of offshore solar power. A unit platform for research and development on offshore PV generation was installed in the Saemangeum sea, and the structural fluctuations and stability were analyzed to ensure conformity with the major performance indicators.

UCI(KEPA)

간행물정보

  • : 공학분야  > 화학공학
  • : KCI등재
  • :
  • : 계간
  • : 1738-3935
  • : 2713-9999
  • : 학술지
  • : 연속간행물
  • : 2005-2021
  • : 523


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17권3호(2021년 09월) 수록논문
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KCI등재

1방음벽 PVT의 공기유로 설계를 위한 CFD 시뮬레이션 사전 분석 연구

저자 : 김유진 ( Yu-jin Kim ) , 김기봉 ( Ki-Bong Kim ) , 이의준 ( Euy-joon Lee ) , 강은철 ( Eun-chul Kang )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 17권 3호 발행 연도 : 2021 페이지 : pp. 1-7 (7 pages)

다운로드

(기관인증 필요)

초록보기

The Korean government announced various energy policies, such as the to reduce 37% of the business-as-usual (BAU) greenhouse gas emissions by 2030. The policies aim to increase the renewable electricity generation ratio to 20% by 2030. PVT is a hybrid technology, which combines photovoltaic (PV) and solar collectors. It is capable of generating electricity and thermal energy simultaneously. It has a great potential to be used as a renewable and clean solar energy. However, there exists a shortage of space for the installation of PVT systems in Korea. To overcome this, in this paper proposes four types of soundproof wall PVT air channels, which were designed and optimized, based on the CFD (Computation Fluid Dynamic) analysis results. The thermal energy generation for multiple PVT units connected in series and pressure drop sensitivity were analyzed, depending on inlet velocity.

KCI등재

2합성가스 발효에서 배지 내 Vitamin 농도의 에탄올 생산에 대한 영향

저자 : 임홍래 ( Hongrae Im ) , 안태광 ( Taegwang An ) , 박소은 ( Soeun Park ) , 김영기 ( Young-kee Kim )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 17권 3호 발행 연도 : 2021 페이지 : pp. 8-15 (8 pages)

다운로드

(기관인증 필요)

초록보기

In this study, we assessed the effect of vitamin components (such as biotin, thiamine-HCl, and folic acid) on microorganism microbial growth and ethanol production was examined to enhance increase the ethanol concentration in the Clostridium autoethanogenum culture process using syngas as a sole carbon source. Biotin and folic acid concentrations of 0.2, 2, 20, and 100 μg/L were used in the culture experiments at 0.2, 2, 20, and 100 μg/L concentrations. The maximum ethanol concentrations of 2.81 g/L and 3.12 g/L were obtained by adding at 0.2 μg/L biotin and folic acid, respectively. Moreover, Thiaminethiamine--HCl at concentrations of 0.5, 5, 50, and 250 μg/L were was examined evaluated to in the culture experiments. The maximum ethanol concentration of 2.84 g/L was observed at 0.5 μg/L of thiamine--HCl. As a resultThus, the optimized concentrations of biotin, thiamine--HCl, and folic acid were determined at 0.2, 0.5, and 0.2 μg/L, respectively, for enhancing increasing the ethanol production. In conclusion, the maximum ethanol production was obtained by adding the minimal concentration of vitamins in C. autoethanogenum culture.

KCI등재

3부유식 해상태양광 발전을 위한 단위 플랫폼 구조물의 실해역 성능평가

저자 : 나경원 ( Kyoung Won Na ) , 추진훈 ( Jinhun Choo ) , 이병준 ( Byung Jun Lee )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 17권 3호 발행 연도 : 2021 페이지 : pp. 16-23 (8 pages)

다운로드

(기관인증 필요)

초록보기

Recently, the Korean government announced a plan to activate renewable energies, with focus on clean energy sources such as solar and wind power as the core and the goal of achieving carbon neutrality by 2050. Unlike other photovoltaic (PV) systems, offshore PV installations are advantageous for large-scale expansion because of the ease of securing sites; they also enable lowering the power generation costs based on construction of large-scale power facilities of megawatt class or higher owing to low noise and landscape damage. However, any power generation should proceed with consideration of the special environmental conditions of the ocean. Above all, when installing large-scale facilities, it is important to reduce fluctuations of the structure and secure stability to actively respond to waves. This study is concerned with the development of a floating body technology that actively responds to waves so as to enable commercialization of offshore solar power. A unit platform for research and development on offshore PV generation was installed in the Saemangeum sea, and the structural fluctuations and stability were analyzed to ensure conformity with the major performance indicators.

KCI등재

4말도 인근 해상풍력발전에 대한 주민수용성 연구

저자 : 박재필 ( Jaepil Park ) , 이상혁 ( Sanghyuk Lee )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 17권 3호 발행 연도 : 2021 페이지 : pp. 24-31 (8 pages)

다운로드

(기관인증 필요)

초록보기

Through 'The Renewable Energy 3020 Implementation Plan' for carbon neutrality, the government promised to raise the proportion of renewable energy generation to 20% and renewable energy installation capacity to 63.8% by 2030. Therefore, we plan to test a 5.5 MW offshore wind turbine near Maldo, Gunsan. In this project, we measure the level of public acceptance and perform ordinary least squares (OLS) regression analysis to show the determinants of public acceptance. The regression results are as followed. First, it is judged that the closer the distance to the offshore wind turbine, the more the economic effects considered by residents. Second, especially in Maldo, the experience of being discriminated from the Saemangeum project, is understood to have caused distrust in the surrounding fishing villages chief/Fisheries Cooperatives, converted into a local community effect. Finally, the policy implications are as follows. First, a bottom-up problem-solving method is required to improve public acceptance, based on the Living Lab. Second, the island community may be indifferent to the briefings or forums of outsiders. Therefore, a gradual approach is required through (in)formal channels based on reliability from a long-term perspective with nearby universities and research institutes using SamsØ Energy Academy.

KCI등재

5암반 대수층에서 개방형 지열 시스템의 개발 및 적용

저자 : 심병완 ( Byoung Ohan Shim ) , 김성균 ( Seong-kyun Kim ) , 최한나 ( Hanna Choi ) , 이수형 ( Soo-hyoung Lee ) , 하규철 ( Kyoochul Ha ) , 김용철 ( Yongchul Kim )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 17권 3호 발행 연도 : 2021 페이지 : pp. 32-41 (10 pages)

다운로드

(기관인증 필요)

초록보기

A groundwater source heat pump (GWHP) was developed in this study by adapting a borehole heat exchanger with closed-loop and open-loop systems in a new building. In the pilot test building, the air-conditioning on the second floor was designed to employ a closed-loop system and that on the third floor had an open-loop system. The GWHP design is based on the feasibility of groundwater resources at the installation site. For the hydrogeological survey of the study site, pumping and injection tests were conducted, and the feasibility of GWHP installation was evaluated based on the air-conditioning load demand of the building. The site was found to be satisfactory for the design capacity of the thermal load and water quality. In addition, the effect of groundwater movement on the performance of the closed-loop system was tested under three different operational scenarios of groundwater pumping. The performance of the system was sustainable with groundwater flow but declined without appropriate groundwater flow. From long-term observations of the operation, the aquifer temperature change was less than 2℃ at the observation well and 5℃ at the injection well with respect to the initial groundwater temperature. This pilot study is expected to be of guidance for developing GWHPs at fractured rock aquifers.

1
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KCI등재

1방음벽 PVT의 공기유로 설계를 위한 CFD 시뮬레이션 사전 분석 연구

저자 : 김유진 ( Yu-jin Kim ) , 김기봉 ( Ki-Bong Kim ) , 이의준 ( Euy-joon Lee ) , 강은철 ( Eun-chul Kang )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 17권 3호 발행 연도 : 2021 페이지 : pp. 1-7 (7 pages)

다운로드

(기관인증 필요)

초록보기

The Korean government announced various energy policies, such as the to reduce 37% of the business-as-usual (BAU) greenhouse gas emissions by 2030. The policies aim to increase the renewable electricity generation ratio to 20% by 2030. PVT is a hybrid technology, which combines photovoltaic (PV) and solar collectors. It is capable of generating electricity and thermal energy simultaneously. It has a great potential to be used as a renewable and clean solar energy. However, there exists a shortage of space for the installation of PVT systems in Korea. To overcome this, in this paper proposes four types of soundproof wall PVT air channels, which were designed and optimized, based on the CFD (Computation Fluid Dynamic) analysis results. The thermal energy generation for multiple PVT units connected in series and pressure drop sensitivity were analyzed, depending on inlet velocity.

KCI등재

2합성가스 발효에서 배지 내 Vitamin 농도의 에탄올 생산에 대한 영향

저자 : 임홍래 ( Hongrae Im ) , 안태광 ( Taegwang An ) , 박소은 ( Soeun Park ) , 김영기 ( Young-kee Kim )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 17권 3호 발행 연도 : 2021 페이지 : pp. 8-15 (8 pages)

다운로드

(기관인증 필요)

초록보기

In this study, we assessed the effect of vitamin components (such as biotin, thiamine-HCl, and folic acid) on microorganism microbial growth and ethanol production was examined to enhance increase the ethanol concentration in the Clostridium autoethanogenum culture process using syngas as a sole carbon source. Biotin and folic acid concentrations of 0.2, 2, 20, and 100 μg/L were used in the culture experiments at 0.2, 2, 20, and 100 μg/L concentrations. The maximum ethanol concentrations of 2.81 g/L and 3.12 g/L were obtained by adding at 0.2 μg/L biotin and folic acid, respectively. Moreover, Thiaminethiamine--HCl at concentrations of 0.5, 5, 50, and 250 μg/L were was examined evaluated to in the culture experiments. The maximum ethanol concentration of 2.84 g/L was observed at 0.5 μg/L of thiamine--HCl. As a resultThus, the optimized concentrations of biotin, thiamine--HCl, and folic acid were determined at 0.2, 0.5, and 0.2 μg/L, respectively, for enhancing increasing the ethanol production. In conclusion, the maximum ethanol production was obtained by adding the minimal concentration of vitamins in C. autoethanogenum culture.

KCI등재

3부유식 해상태양광 발전을 위한 단위 플랫폼 구조물의 실해역 성능평가

저자 : 나경원 ( Kyoung Won Na ) , 추진훈 ( Jinhun Choo ) , 이병준 ( Byung Jun Lee )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 17권 3호 발행 연도 : 2021 페이지 : pp. 16-23 (8 pages)

다운로드

(기관인증 필요)

초록보기

Recently, the Korean government announced a plan to activate renewable energies, with focus on clean energy sources such as solar and wind power as the core and the goal of achieving carbon neutrality by 2050. Unlike other photovoltaic (PV) systems, offshore PV installations are advantageous for large-scale expansion because of the ease of securing sites; they also enable lowering the power generation costs based on construction of large-scale power facilities of megawatt class or higher owing to low noise and landscape damage. However, any power generation should proceed with consideration of the special environmental conditions of the ocean. Above all, when installing large-scale facilities, it is important to reduce fluctuations of the structure and secure stability to actively respond to waves. This study is concerned with the development of a floating body technology that actively responds to waves so as to enable commercialization of offshore solar power. A unit platform for research and development on offshore PV generation was installed in the Saemangeum sea, and the structural fluctuations and stability were analyzed to ensure conformity with the major performance indicators.

KCI등재

4말도 인근 해상풍력발전에 대한 주민수용성 연구

저자 : 박재필 ( Jaepil Park ) , 이상혁 ( Sanghyuk Lee )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 17권 3호 발행 연도 : 2021 페이지 : pp. 24-31 (8 pages)

다운로드

(기관인증 필요)

초록보기

Through 'The Renewable Energy 3020 Implementation Plan' for carbon neutrality, the government promised to raise the proportion of renewable energy generation to 20% and renewable energy installation capacity to 63.8% by 2030. Therefore, we plan to test a 5.5 MW offshore wind turbine near Maldo, Gunsan. In this project, we measure the level of public acceptance and perform ordinary least squares (OLS) regression analysis to show the determinants of public acceptance. The regression results are as followed. First, it is judged that the closer the distance to the offshore wind turbine, the more the economic effects considered by residents. Second, especially in Maldo, the experience of being discriminated from the Saemangeum project, is understood to have caused distrust in the surrounding fishing villages chief/Fisheries Cooperatives, converted into a local community effect. Finally, the policy implications are as follows. First, a bottom-up problem-solving method is required to improve public acceptance, based on the Living Lab. Second, the island community may be indifferent to the briefings or forums of outsiders. Therefore, a gradual approach is required through (in)formal channels based on reliability from a long-term perspective with nearby universities and research institutes using SamsØ Energy Academy.

KCI등재

5암반 대수층에서 개방형 지열 시스템의 개발 및 적용

저자 : 심병완 ( Byoung Ohan Shim ) , 김성균 ( Seong-kyun Kim ) , 최한나 ( Hanna Choi ) , 이수형 ( Soo-hyoung Lee ) , 하규철 ( Kyoochul Ha ) , 김용철 ( Yongchul Kim )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 17권 3호 발행 연도 : 2021 페이지 : pp. 32-41 (10 pages)

다운로드

(기관인증 필요)

초록보기

A groundwater source heat pump (GWHP) was developed in this study by adapting a borehole heat exchanger with closed-loop and open-loop systems in a new building. In the pilot test building, the air-conditioning on the second floor was designed to employ a closed-loop system and that on the third floor had an open-loop system. The GWHP design is based on the feasibility of groundwater resources at the installation site. For the hydrogeological survey of the study site, pumping and injection tests were conducted, and the feasibility of GWHP installation was evaluated based on the air-conditioning load demand of the building. The site was found to be satisfactory for the design capacity of the thermal load and water quality. In addition, the effect of groundwater movement on the performance of the closed-loop system was tested under three different operational scenarios of groundwater pumping. The performance of the system was sustainable with groundwater flow but declined without appropriate groundwater flow. From long-term observations of the operation, the aquifer temperature change was less than 2℃ at the observation well and 5℃ at the injection well with respect to the initial groundwater temperature. This pilot study is expected to be of guidance for developing GWHPs at fractured rock aquifers.

1
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