• Title/Summary/Keyword: CO2 배출

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A Calculation of CO2 Reduction from International Virtual Video-conference (온라인 국제 화상회의 개최에 의한 CO2 저감량 산출)

  • Rhee, Jong-Myung;Lim, Dong-Seok;Lee, Young-Hee
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.2 no.4
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    • pp.81-87
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    • 2009

  • In this paper, the reduction amount of CO2 due to the virtual international video-conference organized by ITU in order to reduce the greenhouse gas (GHG) is calculated. The comparison is made with the case of off-line conference. In the symposium organized by ITU, "The power of ICTs to save The planet", held on September 2009 the participants were highly encouraged to attend the symposium through video-conferencing for the reduction of GHG. As a result, 46 foreign participants and 16 among 170 domestic participants have attended at virtual video-conference, which resulted in about 94.7 ton of CO2 emission reduction. This international symposium firstly tried in conjunction with online and off-line has drawn a big attention in the aspect of global warming. Definitely such ITU's trial will make significant impacts on the holding of other international symposiums and forums.

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Experimental Study on Dilution Effect of Exhaust Gas in SNG Combustion on a Model Gas Turbine (가스터빈에서 SNG 연료 조성에 대한 희석제의 배기배출물 저감효과에 대한 실험적 연구)

  • Joo, Seongpil;Yoon, Jisu;Kim, Jeongjin;Kim, Seongheon;Yoon, Youngbin
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.44 no.7
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    • pp.603-610
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    • 2016

  • This paper describes experimental results about emission and NOx reduction of dilution effect (Nitrogen and carbon dioxide) about various fuel compositions of synthetic natural gas (SNG). Combustion experiment was performed to investigate the combustion characteristics for SNG with various hydrogen ratio in SNG, heat input and equivalence ratio in a partially premixed model gas turbine combustor. NOx emission was similar to each hydrogen ratio and flame characteristics was investigated from OH chemiluminescence images. There was a singularity of CO emission in stoichiometric condition and it can be identified using OH chemiluminescence intensity. In addition, dilution effect was studied in using nitrogen and carbon dioxide as diluent to reduce the NOx emission. Carbon dioxide diluent was more effective to NOx reduction than nitrogen diluent because of its high diluent specific heat and its heat capacity.

  • https://doi.org/10.5139/JKSAS.2016.44.7.603 인용 PDF KSCI

Time Course of $CO_2$ Exchange of Sweetpotato Cultures In Vitro with Different $CO_2$ Concentration under Forced Ventilation (고구마 조직배양묘의 $CO_2$교환량 연속 측정)

  • 오양숙;고재풍수;정순주
    • Proceedings of the Korean Society for Bio-Environment Control Conference
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    • 1997.05a
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    • pp.17-22
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    • 1997

  • 본 연구에서는 고구마 조직배양묘의 $CO_2$ 교환량을 측정하기위해 개방형 광합성측정장치의 원리를 이용해 자체제작한 $CO_2$ 교환량 측정장치를 이용하여 공기 주입구와 배출구의 $CO_2$ 농도를 연속측정하고, 명기와 암기에 있어서의 $CO_2$ 교환량의 일변화를 분석했다. 내용적 1.48$\ell$의 배양기에 32개의 식물체를 이식했을 때 식물체당 일일 $CO_2$ 교환량은 19일째에 포화에 달했다. 식물체 생장에 있어서는 자연환기구보다 강제환기구의 생장이 촉진되었고, 강제환기구에서는 $CO_2$ 시용구가 무시용구보다 생장이 촉진되었다. 본 연구의 결과는 고구마 조직배양묘를 강제환기와 $CO_2$ 시용등 배양환경의 개선함으로써 순환과정을 거치지 않고 포장정식이 가능한 배양묘나 삽수의 생산이 가능함을 시사한다고 사료된다.

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