JP3968728B1 - バッファーチャンバー方式ガス収支測定装置 - Google Patents
バッファーチャンバー方式ガス収支測定装置 Download PDFInfo
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- JP3968728B1 JP3968728B1 JP2006101782A JP2006101782A JP3968728B1 JP 3968728 B1 JP3968728 B1 JP 3968728B1 JP 2006101782 A JP2006101782 A JP 2006101782A JP 2006101782 A JP2006101782 A JP 2006101782A JP 3968728 B1 JP3968728 B1 JP 3968728B1
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Abstract
【選択図】図1
Description
前記植物8aと前記底板2cとの隙間を埋めるシール部材9と、
植物8aを覆う容器2gよりなる測定チャンバー10と、
前記測定チャンバー10の側面上部又は上面に接続したガス体が通る排気管4b、
及び前記測定チャンバーの側面下部に接続したガス体が通る給気管5aとを介して、
排気管4bを下部に、給気管5aを側面上部又は上面に、連結する中空のバッファーチャンバー3と、
前記測定チャンバー10の内部と、前記バッファーチャンバー3の内部のガス体を循環させる循環ファン6と、
ターゲットガスの濃度を測定する検出器に接続するセンサ7からなる。
容器2gの連結孔2fで排気間4bと接続する。
飽和水蒸気圧(hPa) E(t)=6.11×10^(7.5t/(t+237.3) Tetens(1930)の式
絶対湿度(g/m3) a=217×e/(t+273.15) 水蒸気の状態方程式から導かれる式
いま、蒸発質量xと露点温度yがy=bx+cの関係にあるとき、測定システムの容積V(m3)は
V=1/(1325.87*10^((7.5*(b+c)/((b+c)+237.3)))/((b+c)+273.15)-
1325.87*10^((7.5*c/(c+237.3)))/(c+273.15))で求められる。
この式に、検定によって得られた係数b=8.1724、c=8.8234を代入すると、
1/(1325.87*10^((7.5*(8.1724+8.8234)/((8.1724+8.8234)+237.3)))/((8.1724+8.8234)+273.15)-1325.87*10^((7.5*8.8234/(8.8234+237.3)))/(8.8234+273.15))
=0.173
1a ガス収支測定装置
1b ガス収支測定装置
2 測定チャンバー
2a 容器
2b 蓋
2c 底板
2d 孔
2e 接合部
2f 連結孔
2g 容器
3 バッファーチャンバー
3a バッファーチャンバー
3b 換気ファン
3c 圧力開放弁
4 排気管
4a 排気管
4b 排気管
5 給気管
5a 給気管
6 循環ファン
7 センサ
7a CO2センサ
7b 温湿度センサ
8 測定物
8a 植物
9 シール部材
10 測定チャンバー
10a測定チャンバー
Claims (3)
- 測定物を覆い又は格納する測定チャンバーに、給気管と排気管により、バッファーチャンバーを連結し、両チャンバー内部のガスを循環させ、測定物がターゲットガスを放出ないしは吸収することによるターゲットガスの濃度の変化を、前記バッファーチャンバー又は前記給気管内で測定するセンサからなるガス収支測定装置であって、前記チャンバーに既知量のガスを入れ、ガスの循環によるガス濃度安定に要する時間を応答感度とし、ガスの投入量と測定値の相関係数によって、前記ガス収支測定装置の測定精度を判定し、ガスの投入量と測定値の直線回帰式から前記ガス収支測定装置の空間内の容積を求めることを特徴とするガス収支測定装置。
- 前記ガス収支測定装置の測定チャンバーの形状を測定対象に合わせて変更し、バッファーチャンバーの容積を変化させることで、ターゲットガス濃度変化速度をセンサの感度に合わせて調節することを特徴とする、請求項1に記載のガス収支測定装置の使用方法。
- 請求項1に記載のガス収支測定装置のバッファーチャンバーを換気することで、ターゲットガスの濃度を外気にリセットして、ターゲットガスのチャンバー内の濃度変化が測定物に及ぼす影響を消去し、連続測定を可能とする機構。
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JP2006101782A JP3968728B1 (ja) | 2006-04-03 | 2006-04-03 | バッファーチャンバー方式ガス収支測定装置 |
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JP2006101782A JP3968728B1 (ja) | 2006-04-03 | 2006-04-03 | バッファーチャンバー方式ガス収支測定装置 |
Publications (2)
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JP3968728B1 true JP3968728B1 (ja) | 2007-08-29 |
JP2007274908A JP2007274908A (ja) | 2007-10-25 |
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JP2006101782A Expired - Fee Related JP3968728B1 (ja) | 2006-04-03 | 2006-04-03 | バッファーチャンバー方式ガス収支測定装置 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012233837A (ja) * | 2011-05-09 | 2012-11-29 | Daiki Rika Kogyo Kk | 発生ガス検出装置 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101349293B1 (ko) * | 2012-02-03 | 2014-01-16 | 전북대학교산학협력단 | 나노섬유 복합체 및 이의 제조방법 |
JP6557100B2 (ja) * | 2014-09-16 | 2019-08-07 | 株式会社三井E&Sエンジニアリング | 植物の診断方法及び診断装置 |
JP7181518B2 (ja) * | 2018-03-28 | 2022-12-01 | 国立大学法人愛媛大学 | 光合成速度計測システム |
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2006
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012233837A (ja) * | 2011-05-09 | 2012-11-29 | Daiki Rika Kogyo Kk | 発生ガス検出装置 |
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