Development of a cryogenic air sampling system for unmanned aircraft observation.

开发用于无人机观测的低温空气采样系统。

基本信息

  • 批准号:
    07558076
  • 负责人:
  • 金额:
    $ 8.9万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
  • 财政年份:
    1995
  • 资助国家:
    日本
  • 起止时间:
    1995 至 1997
  • 项目状态:
    已结题

项目摘要

In order to clarify distributions and variations of atmospheric trace gases in the stratosphere using an unmanned aircraft, it is necessary to develop a small and light weight air sampling system. For this purpose, we developed and tested a new cryogenic air sampler using neon Joule-Thomson (JT) cooler. The results are summarized as follows :1. An refrigeration capacity of neon JT cooler was experimentally determined. The results showed that the neon JT cooler produced refrigeration of about 23 Joule/second at neon gas pressure of 130 kgf/cm^2 and of nearly zero at 50 kgf/cm^2. It was also confirmed that the neon gas was liquefied after 50 to 150 seconds of the neon gas introduction.2. Low pressure nitrogen was introduced into a new cryogenic air sampling system in which the JT cooler was equipped, and sampling rate of nitrogen were measured. the sampling rate was between 0.7 and 1.0 normal litter/minutes at nitrogen pressure of 100 hPa and between 0.3 and 0.7 normal litter/minutes at 5 hPa. these results indicate that it is necessary to increase the sampling rate to realize a practical sampling system.3. To examine the composition of air after sampled by the cryogenic sampling system, an air-base standard gas, of which methan concentration was already determined, were introduced into the sampling system and sampled cryogenically. As a result, the methan concentration of the sample was confirmed to be identical to that of the standard gas within the measurement precision.4. A high conductance valve system was successfully developed using a pipe breaking cutter, cold weld and N-S joint techniques. Because the valve system was composed only by straight tubes, high conductance was easily attained even if relatively thin tube was used.
为了利用无人机了解大气中痕量气体在平流层中的分布和变化,有必要开发一种小而轻的空气采样系统。为此,我们研制并测试了一种使用霓虹焦耳-汤姆逊(JT)制冷器的新型低温空气采样器。主要研究结果如下:1.对霓虹灯JT制冷机的制冷量进行了实验测定。结果表明,在Ne气压为130kgf/cm2时,Ne JT制冷器的制冷量约为23焦耳/秒,而在50kgF/cm2时,制冷量几乎为零。此外,还证实了在Ne气体引入50~150秒后,Ne气体发生了液化。将低压氮气引入到装有JT冷却器的新型低温空气采样系统中,测量了氮气的采样率。在氮气压力为100百帕时,采样速率为0.7~1.0标准凋落物/分钟;在5百帕时,采样速率为0.3~0.7标准凋落物/分钟。这些结果表明,要实现实用的采样系统,有必要提高采样率。为了检测经低温采样系统采样后的空气成分,将已确定甲烷浓度的气基标准气体引入采样系统进行低温采样。结果表明,在测量精度范围内,样品的甲烷浓度与标准气体的浓度一致。采用断管切割器、冷焊和N-S接头技术,研制成功了一种高电导阀门系统。由于阀门系统只由直管组成,即使使用较薄的管也很容易获得高电导。

项目成果

期刊论文数量(14)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Honda, H.et al.: "A newly developed grab sampling system for collecting storatospheric air over Antarctic" Antarctic Record. 40. 156-168 (1996)
Honda, H.et al.:“一种新开发的抓取采样系统,用于收集南极上空的平流层空气”《南极记录》。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Yamanouchi,T.: "Report of atmospheric science observations at Ny-Ålesund,Svalbard" Mem.Natl Inst.Polar Res.,Spec.Issue. 51(未定). (1996)
Yamanouchi, T.:“斯瓦尔巴群岛 Ny-Ålesund 大气科学观测报告”Mem.Natl Inst.Polar Res.,Spec.Issue 51(待定)。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
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  • 通讯作者:
Yamanouchi, T.et al.: "A future plan for atomspheric observations using unmanned aircraft" Proc.Polar.Meteorol.Glaciol. 11. 257 (1997)
Yamanouchi, T.et al.:“使用无人机进行原子层观测的未来计划”Proc.Polar.Meteorol.Glaciol。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
T.Yamanouchi et al.: "A Future Plan for Atmospheric Observations using Uumanned Aircraft" Proc.NIPR Symp.Polar Meteol.Glaciol.11(in press). (1997)
T.Yamanouchi 等人:“使用无人机进行大气观测的未来计划”Proc.NIPR Symp.Polar Meteol.Glaciol.11(印刷中)。
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WADA Makoto的其他文献

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{{ truncateString('WADA Makoto', 18)}}的其他基金

Investigation of cognitive and neural bases of developmental disorders by body ownership illusions in mice
通过小鼠身体所有权幻觉研究发育障碍的认知和神经基础
  • 批准号:
    17H01757
  • 财政年份:
    2017
  • 资助金额:
    $ 8.9万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Research and development of training methods for sensing of social atmosphere for individuals with developmental disorders by controlling gaze behaviors
通过控制注视行为对发育障碍个体社会氛围进行感知的训练方法研究与开发
  • 批准号:
    15K12615
  • 财政年份:
    2015
  • 资助金额:
    $ 8.9万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Study of Patients' Needs who are receiving chemotherapy at ambulatory settings: multi-institutional study
在门诊环境中接受化疗的患者需求研究:多机构研究
  • 批准号:
    19590692
  • 财政年份:
    2007
  • 资助金额:
    $ 8.9万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Development of Grignard-Type Addition Reaction and Application of Its into the Practical Synthetic Process
格氏加成反应的进展及其在实际合成过程中的应用
  • 批准号:
    11554024
  • 财政年份:
    1999
  • 资助金额:
    $ 8.9万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Development of Synthetic Reactions and Effect Chemicals
合成反应和效应化学品的发展
  • 批准号:
    10045029
  • 财政年份:
    1998
  • 资助金额:
    $ 8.9万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
A Development of Carbon-Carbon Bond Forming Reaction without Protection of Hydroxyl Group and Carboxyl Group
无羟基和羧基保护的碳-碳键形成反应的进展
  • 批准号:
    10640524
  • 财政年份:
    1998
  • 资助金额:
    $ 8.9万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
ANNUAL VARIATIONS OF CLOUD LIQUID WATER IN THE POLAR REGION USING SATELLITE DATA
利用卫星数据研究极地地区云液态水的年变化
  • 批准号:
    06640564
  • 财政年份:
    1994
  • 资助金额:
    $ 8.9万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
A Stereocontrolled Nucleophilic Addition to Imines and a Catalytic Asymmetric Reaction
亚胺的立体控制亲核加成和催化不对称反应
  • 批准号:
    06651010
  • 财政年份:
    1994
  • 资助金额:
    $ 8.9万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
Development of Bismuth Compounds as A Organic Synthetic Reagent and It's Application to New Synthetic Reactions
有机合成试剂铋化合物的开发及其在新合成反应中的应用
  • 批准号:
    04640505
  • 财政年份:
    1992
  • 资助金额:
    $ 8.9万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)

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