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New & Renewable Energy

  • : 한국신·재생에너지학회
  • : 공학분야  >  화학공학
  • : KCI등재
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  • : 연속간행물
  • : 계간
  • : 1738-3935
  • : 2713-9999
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수록정보
수록범위 : 1권1호(2005)~18권4호(2022) |수록논문 수 : 554
신재생에너지
18권4호(2022년 12월) 수록논문
최근 권호 논문
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KCI등재

저자 : 박종근 ( Jong-keun Park ) , 천승규 ( Seung-kyu Chun )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 18권 4호 발행 연도 : 2022 페이지 : pp. 1-11 (11 pages)

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Landfill gas (LFG) generation characteristics in a construction waste landfill zone (block E) and mixed landfill zone (block A) were analyzed. During the period from October 2018 to April 2022, a total of 936×103and 1,001×103tons of waste were disposed in block E and block A, respectively. Out of this, 27.1% and 55.6% were biodegradable waste in block E and block A, respectively. The landfill masses of the two blocks were converted to be comparable. Then, the biodegradable waste and organic carbon were estimated by element analysis, biodegradable carbon by biochemical methane potential experiment (DC), and sulfate ion by acid decomposition. Results showed that biodegradable waste, organic carbon, biodegradable carbon, and sulfate ions in block A were 2.1, 1.6, 5.2, and 0.4 times greater than those in block E, respectively. The amount of LFG generated by block A was 4.8 times greater than that by block E. The average concentrations of methane (CH4) were 60.8% and 60.9% in block E and block A, respectively, which were unrelated to the nature of disposed waste. The average concentrations of hydrogen sulfide (H2S) were significantly high in block E (4,489 ppm) and block A (8,478 ppm). As the DC/SO42-of block E and block A were 0.35 and 4.56, respectively, increase in DC/SO42-caused increase in not only the total amount but also the concentration of H2S generated.

KCI등재

저자 : 최상규 ( Sangkyu Choi ) , 최연석 ( Yeonseok Choi ) , 정연우 ( Yeonwoo Jeong ) , 한소영 ( Soyoung Han ) , 응웬반꾸잉 ( Quynh Van Nguyen )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 18권 4호 발행 연도 : 2022 페이지 : pp. 12-21 (10 pages)

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The pyrolysis characteristics of high-density polyethylene (HDPE), low-density polyethylene (LDPE), and polypropylene (PP) were analyzed numerically using a 1D plug flow reactor (PFR) model. A lumped kinetic model was selected to simplify the pyrolysis products as wax, oil, and gas. The simulation was performed in the 400-600°C range, and the plastic pyrolysis and product generation characteristics with respect to time were compared at various temperatures. It was found that plastic pyrolysis accelerates rapidly as the temperature rises. The amounts of the pyrolysis products wax and oil increase and then decrease with time, whereas the amount of gas produced increases continuously. In LDPE pyrolysis, the pyrolysis time was longer than that observed for other plastics at a specified temperature, and the amount of wax generated was the greatest. The maximum mass fraction of oil was obtained in the order of HDPE, PP, and LDPE at a specified temperature, and it decreased with temperature. Although the 1D model adopted in this study has a limitation in that it does not include material transport and heat transfer phenomena, the qualitative results presented herein could provide base data regarding various types of plastic pyrolysis to predict the product characteristics. These results can in turn be used when designing pyrolysis reactors.

KCI등재

저자 : 김련우 ( Ryeon-woo Kim ) , 안창모 ( Changmo Ann ) , 임동현 ( Dong-hyeon Im ) , 정지범 ( Jibum Chung ) , 김효민 ( Hyomin Kim )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 18권 4호 발행 연도 : 2022 페이지 : pp. 22-37 (16 pages)

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Large-scale offshore wind power is emerging as a viable solution to achieve carbon neutrality and solve climate change. As power generation complexes require ample space for construction, they create conflicts with residents near the construction site. To resolve the issue with residents, Korea, along with other countries, has developed policies that focus on influencing public perception. However, as the contents of such policies changed several times in a short period in Korea, they were differently applied depending on the timing of the project. This study examines how Korean offshore wind power site development policies, particularly the ones focusing on swaying public perception, were applied differently by regions.

KCI등재

저자 : 홍성희 ( Sung Hee Hong ) , 김소라 ( So Ra Kim ) , 박은정 ( Eun Jung Park ) , 이혜림 ( Hye Rim Lee ) , 김진영 ( Jin Young Kim ) , 황수진 ( Su Jin Hwang ) , 송정은 ( Jung Eun Song )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 18권 4호 발행 연도 : 2022 페이지 : pp. 38-53 (16 pages)

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Recently, the government has been promoting the expansion and supply of renewable energy as an alternative for achieving carbon neutrality and the nationally determined contributions by 2030. In 2020, the Ministries of Industry and Environment and the Korea Forest Service collaborated to build a nationwide onshore wind energy siting atlas considering wind resources and forestry and environmental regulations focused on central regulations. In this study, the ordinances of the local governments were analyzed to examine the effects of regional location regulations on the expansion of onshore wind power energy generation facilities, in addition to those of central regulations. A development permit standard survey of 226 urban plan ordinances of the local governments nationwide showed that presently in 2022, 52 municipalities are applying regulations on wind energy generation facilities by ordinances. This is twice more than that in 2018, when renewable energy power generation facility development was difficult. Additionally, the location regulations applied by these ordinances were organized by items and regions, and regulatory characteristics, such as the number and scope, were analyzed by regions. To analyze the spatial distribution characteristics, JeollaNamdo was selected as the case area. A spatial DB was established for regulated areas based on the regional and central regulations, and the spatial distribution characteristics and the regulatory scope were compared and analyzed.

KCI등재

저자 : 김성훈 ( Sung-hoon Kim ) , 윤화영 ( Hwa-young Yoon )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 18권 4호 발행 연도 : 2022 페이지 : pp. 54-63 (10 pages)

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This study compared and analyzed major policies and operational processes of countries that introduced the Renewable Energy Plan Site, through literature analysis of published governmet data, and previous research results. The procedures of the Renewable Energy Plan Site were classified into planned location designations, selection of power generation business operators, designation of the business' district and development and evaluating the factors derived for each procedure. Four contries were selected to be compared and analyzed, namely: Denmark, Germany, the United Kingdom and Japan. This was based on the criteria used to introduce and operate the Renewable Energy Plan Site, activate renewable energy supply and check the applicability of Korea's policies. It was analyzed that the priority of the planned location for the procedure was different for each country depending on the conditions there.

KCI등재

저자 : 어승아 ( Seungah Ur ) , 김주휘 ( Juhwi Kim ) , 이재형 ( Jaehyeong Lee )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 18권 4호 발행 연도 : 2022 페이지 : pp. 64-69 (6 pages)

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Double-sided photovoltaic (PV) modules have received significant attention in recent years as a technology that can achieve higher annual energy production rates than single-sided modules. The shingled technology is a promising method for manufacturing high-density and high-power modules. These modules are divided by laser and joined with electrically conductive adhesives. The output efficiency of the divided cells depends on the division pattern and the electrode pattern, making it important to understand the output characteristics. In this study, the output characteristics of large-area double-sided light-receiving shingled cells with different split patterns and electrode patterns were investigated. The M6 size, with 6 divisions in the electrode pattern, had the highest efficiency when using 142 front fingers and 146 rear fingers. The M10 size, with 7 divisions, had the highest output when using 150 fingers equally in the front and rear. The M12 size, also with 7 divisions, showed the highest output characteristics when using 192 front fingers and 208 rear fingers.

KCI등재

저자 : 양지윤 ( Jiyoon Yang ) , 이재정 ( Jaejung Lee ) , 정한섭 ( Hanseob Jeong ) , 한상훈 ( Sang Hun Han ) , 이수민 ( Soo Min Lee )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 18권 4호 발행 연도 : 2022 페이지 : pp. 70-78 (9 pages)

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To respond to global warming, there is an increasing interest in eco-friendly alternative energy sources. Therefore, unused forest biomass that has been neglected due to a lack of marketability is attracting attention. With the introduction of the “unused forest biomass certification system” in 2019, ways of determining quantity of unused forest biomass have steadily increased. However, there have been reported cases whereby unused forest biomass weighed more than the amount of harvested trees. It was found that it was possible that forest resources that can be used as round wood were mixed with unused forest biomass. In this context, this study aimed to estimate the amount of mixed round wood in the unused forest biomass supply. The relative expression of growing stock/ha versus the amount of final clearing/ha collected was modeled (y=1.490x-94.341, R2=0.861). As a result, it was found that round wood was mixed into the unused forest biomass, contributing to the disparity observed between the weighted forest biomass and the amount of trees harvested. In conclusion, proper declaration and certification procedures should be carried out for the use of forest resources and promoting unused forest biomass usage.

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