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An Experimental Study on Ozone Destruction Reaction by Emission from Airplanes in Stratosphere

Research Project

Project/Area Number 13650211
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Thermal engineering
Research InstitutionThe University of Tokyo

Principal Investigator

TSUE Mitsuhiro  The University of Tokyo, Graduated School of Engineering, Associate Professor, 大学院・工学系研究科, 助教授 (50227360)

Co-Investigator(Kenkyū-buntansha) KONO Michikata  The University of Tokyo, Graduate School of Frontier Sciences, Professor, 大学院・新領域創成科学研究科, 教授 (60011194)
Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2002: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2001: ¥2,700,000 (Direct Cost: ¥2,700,000)
KeywordsStratosphere / Ozone Layer / Emission / Nitrogen Oxide / Photochemical Reaction / Laser Induced Fluorescence / Vacuum Chamber / オゾン / 超音速機 / レーザ計測 / 真空チャンバ
Research Abstract

An experimental study on the effect of jet exhaust gas on the stratospheric ozone layer was conducted. The stratospheric condition was simulated using a large vacuum chamber, where the ambient pressure was sustained at 2.67 kPa and an ultraviolet ray source was directed. This ambient pressure is almost equal to that at the altitude 25km. A low-pressure mercury lamp was used as a source of ultraviolet rays. Two types of experiments were conducted.
One is for the behavior of ozone and NOx with photochemical reactions when the NOx injected from airplanes is fully diffused in the ambience. After evacuating the chamber, a certain amount of NO and NO2 was injected into the chamber and was diluted by Air and N2. Then ultraviolet rays started emitting and the concentration of NO and NO2 were measured by LIF method. Calculations using properties in the stratosphere were conducted to compare with experimental results. As a result, the tendencies of reactions including NO, NO2, ozone in the strato … More sphere are explored and the chemical reaction model in this calculation is verified.
The other is for the reaction between ozone and NOx in the jet plume near the exit of the nozzle of airplanes. NO gas, which was diluted by nitrogen, was injected from a nozzle as an exhaust gas in the simulated ozone layer. NO and NO2 concentration in the jet stream were measured by LIF methods, and the reaction amounts between NO and ozone were derived from LIF images. The reaction rate derived NO-LIF was much bigger than the actual one, because ozone absorbed laser beam near 226.1 nm to simulate NO molecular and NO-LIF signal. It was not proper to use NO-LIF method to determine the reaction amount between NO and ozone. However, it was useful to visualize the flow in this condition because of its strong intensity. The reaction amount derived from NO2-LIF was valid compared with a result of simplified calculations. The NO2-LIF method can be available for the measurement of reaction rate quantitatively between NO and ozone in the ozone layer. Less

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 中谷辰爾, 笠原希仁, 芝世弐, 津江光洋, 河野通方: "成層圏におけるNO_x-O_3反応系の感度解析と模擬実験"日本航空宇宙学会論文集. 50-587. 504-509 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 中谷辰爾, 芝世弐, 笠原希仁, 荒木幹也, 尾下充利, 河野通方: "真空チャンバを使用した模擬成層圏における紫外光照射下のNO_x-O3反応系の挙動"日本機械学会論文集. 68-671. 2135-2142 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 中谷辰爾, 芝世弐, 荒木幹也, 尾下充利, 津江光洋, 河野通方: "LIF法を使用した模擬オゾン層におけるO希釈ガス噴流中におけるNO-O3反応の測定"日本機械学会論文集. 68-672. 2313-2319 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S.Nakaya, S.Shiba, M.Araki, M.Tsue, M.Kono: "The Study on the Behavior of NO_x from Airplanes in the Simulated Ozone Layer"Proceedings of The Asia-Pacific Conference on Combustion. 581-587 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S. Nakaya, M. Kasahara, S. Shiba, M. Tsue and M. Kono: "A Sensitivity Analysis and a Simulated Experiment on NOx-O3 Reaction in the Stratosphere"Journal of the Japan Society for Aeronautical and Space Sciences. 50-587. 504-509 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S. Nakaya, S. Shiba, M. kasahara, M. Araki, M. Oshita, M. Tsue and M. Kono: "Behaviors of NOx-O3 Reactions under an Emission of Ultraviolet Ray in a Simulated Stratosphere in the Use of a Vacuum Chamber"Transactions of the Japan Society of Mechanical Engineers. (B) 68-671. 2135-2142 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S. Nakaya, S. Shiba, M. Araki, M. Oshita, M. Tsue and M. Kono: "Measurements of the Reaction between NO and O3 in a jet Stream of NO Dilute Gas by LIF Method"Transactions of the Japan Society of Mechanical Engineers. (B) 68-672. 2313-2319 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S. Nakaya, S. Shiba, M. Araki, M. Tsue and M. Kono: "The Study on the Behavior of NOx from Airplanes in the Simulated Ozone Layer"Proceedings of The Third Asia-Pacific Conference on Combustion. 581-587 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 中谷辰爾, 笠原希仁, 芝世弐, 津江光洋, 河野通方: "成層圏におけるNOx-O3反応系の感度解析と模擬実験"日本航空宇宙学会論文集. 50-587. 504-509 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 中谷辰爾, 芝世弐, 笠原希仁, 荒木幹也, 尾下充利, 津江光洋, 河野通方: "真空チャンバを使用した模擬成層圏における紫外光照射下のNOx-O3反応系の挙動"日本機械学会論文集. 68-671. 2135-2142 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 中谷辰爾, 芝世弐, 荒木幹也, 尾下充利, 津江光洋, 河野通方: "LIF法を使用した模擬オゾン層におけるO希釈ガス噴流中におけるNO-O3反応の測定"日本機械学会論文集. 68-672. 2313-2319 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] S.Nakaya, S.Shiba, M.Araki, M.Tsue, M.Kono: "The Study on the Behavior of NOx from Airplanes in the Simulated Ozone Layer"Proceedings of The Third Asia-Pacific Conference on Combustion. 581-587 (2001)

    • Related Report
      2002 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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