• Title/Summary/Keyword: Environmental

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An Analysis of Environmental Values Written in Energy.Environment Inquiry Activity Contest Reports of Elementary School Teams ("에너지.환경 탐구대회" 초등팀 탐구 활동 소개 및 보고서에 진술된 환경 가치 분석)

  • 구수정;김영신;정완호
    • Hwankyungkyoyuk
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    • v.13 no.1
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    • pp.75-86
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    • 2000

  • The purpose of this study is to analyze the content of environmental inquiry activities and values of elementary school students written in their reports of the Energy Environment Inquiry Activity Contest which is a unit contest of the Youth Science Festival held annually in Korea and get some ideas for the valuable way of Korean environmental education. 10 teams' reports were gathered and the locality, class study area, inquiry theme, inquiry method and values were analyzed and introduced as case studies to get some insights to teach elementary school students environmental values through inquiry activities of science subject approach. Each teams set various inquiry themes in the content domain of energy resources and earth environment conservation focusing on each team's geographical characteristics and occurring environmental problems in their local areas. There were 16 sentences representing technocentrism and 12 sentences representing ecocentrism. 5 of 10 teams showed both of technocentrism and ecocentrism in their reports. But their was only scientific knowledge without any environmental values in one team's report. Inquiry activity is a good teaching-learning method to develop environmental literacy. There should be environmental values involved as far as it is the environmental inquiry activities using environmental subject matter. The result of this study proposes that environmental educators should actively intervene for inquirers to set a stage in the whole process to search for an alternative to solve environmental problems involved in their project activities. The reason is because the environmental education in the elementary school is established to operate by the infusion way into various subjects already existed in the Korean curriculum.

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Estimation of Energy Recovery Rate of Municipal Waste Incineration Facilities through Measuring Instruments (계측기기 측정을 통한 생활폐기물 소각시설의 에너지 회수효율 산정 연구)

  • Kwon, Young-Hyun;Kang, Jun-Gu;Ko, Young-Jae;Yoo, Ha-Nyoung;Kwon, Jun-Hwa;Park, Ho-Yeun;Jeon, Tae-Wan;Lee, Young-Ki
    • Journal of Korea Society of Waste Management
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    • v.35 no.8
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    • pp.770-776
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    • 2018

  • This study measured the energy recovery rate of each municipal waste incineration facility according to the revised energy recovery rate estimation method, which targeted four municipal waste incineration facilities (Unit No. 7). The results calculated by the measuring instruments were used for each factor to estimate the recovery rate, and the available potential of available energy was examined by analyzing the energy production and valid consumption. As a result of the low heating value, 2,540 kcal/kg was calculated on average when the LHVw formula was applied, which is approximately 116 kcal/kg higher than the average design standard of 2,424 kcal/kg. The energy recovery rate was calculated as 96.9% on average based on production and 67.5% based on effective consumption, and the analysis shows that approximately 29.4% energy can be used.

  • https://doi.org/10.9786/kswm.2018.35.8.770 인용

Applicability of the Energy Recovery in Automotive Shredder Residue (ASR) Recycling Facilities (폐자동차 파쇄잔재물(ASR) 재활용 시설의 에너지 회수효율 적용성 평가)

  • Yoo, Ha Nyoung;Kang, Jun Gu;Kwon, Young Hyun;Ko, Young Jae;Kwon, Jun Hwa;Park, Ho Yeun;Jeon, Tae Wan;Lee, Young Kee
    • Journal of Korea Society of Waste Management
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    • v.35 no.7
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    • pp.660-669
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    • 2018

  • Domestic automotive shredder residue (ASR) recycling facilities must comply with 60% of the energy recovery criteria calculated by the waste control act, based on resource circulation of electrical and electronic equipment and vehicles. The method of calculating energy recovery criteria was newly enacted on November 6, 2017, and it has been judged that it is necessary to consider applicability. In this study, the energy recovery efficiency of 7 units was calculated by past and present calculation methods. Furthermore, this study attempts to find applicability and a method of increasing the energy recovery efficiency by taking advantage of available potentials. An analysis of the calculation results showed that the average values calculated by past methods, present methods, and the method that includes available potentials are 76.35%, 70.68%, and 78.24%, respectively. Therefore, the new calculation method for energy recovery efficiency is also applicable to domestic automotive shredder residue recycling facilities.

  • https://doi.org/10.9786/kswm.2018.35.7.660 인용