㔚᳇㓸Ⴒⵝ⟎߆ࠄߩࠝ࠱ࡦ⊒↢ߩᛥᛛⴚ
⼱ ◊ ผ
*
,1㧘⚦ ㊁
ᵗ
*㧘 ↰
శ
*㧘᳓ ㊁
ᓆ
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㧔2008 ᐕ 1 7 ᣣฃઃ; 2008 ᐕ 9 29 ᣣฃℂ㧕.
Reduction of Ozone Generation in an Electrostatic Precipitator
Atsushi KATATANI*
,1, Hiroshi HOSONO*, Hikaru MURATA* and Akira MIZUNO**
(Received January 7, 2008; Accepted September 29, 2008)
Electrostatic Precipitator (i.e. ESP) has recently been utilized for environmental protection of purifying road tunnel
exhaust. ESP can remove soot from automobiles by charging with corona discharge. In the meantime, corona
discharge generates ozone (O
3). Nitrogen dioxide (NO
2), a toxic gas element, then, increases undesirably, contrary to
the purpose of environmental protection because O
3oxidizes nitrogen monoxide (NO) contained in tunnel exhaust gas
into NO
2. We examined the effect of electrode geometry and polarity of corona discharge on ozone generation. As a
result, a method has been developed to minimize ozone generation associated with corona discharge in ESPs.
1. ߪߓߦ ߎߩචᢙᐕ㑆ߩⅣႺᗧ⼂ߩ㜞឴߆ࠄ㧘⥄േゞ〝࠻ࡦࡀ࡞ ߩ឵᳇ᚲ߆ࠄឃߐࠇࠆ࠻ࡦࡀ࡞ឃ᳇ਛߩSPM㧔Suspended particle matter, ᶋㆆ☸ሶ⁁‛⾰㧕ࠍ㒰ߔࠆ࠾࠭߇㜞߹ߞ ߡࠆ㧚ᓥߞߡ㧘࠻ࡦࡀ࡞឵᳇ᚲߩឃ᳇㘑〝ౝߦⅣႺኻ╷↪ ߩ㔚᳇㓸Ⴒⵝ⟎ࠍ⸳⟎ߔࠆ߇Ⴧടߒߡࠆ1)㧚ᣣᧄߩㇺᏒ ㇱߦ߅ߌࠆ࠻ࡦࡀ࡞ឃ᳇ᕈ⁁ߩࠍ1 ߦ␜ߔ㧚 ࠻ࡦࡀ࡞↪㔚᳇㓸Ⴒⵝ⟎ߪ㧘㜞㘑ㅦߩಣℂߦㆡߒߚ㧘Ꮺ㔚 ㇱߣ㓸Ⴒㇱ߆ࠄᚑࠆ2 Ბ㓸Ⴒᣇᑼ㧔࿑ 1 ෳᾖ㧕ߢࠆ㧚ߘߩ 1 ㇺᏒㇱ࠻ࡦࡀ࡞ߩౖဳ⊛ߥឃࠟࠬᕈ⁁
Table 1 Typical properties of exhaust gas in urban tunnel. Day average Fluctuation range SPM Suspended
Particulate Matter 0.20 mg/m3 0㨪2.0 mg/m3 NO2 Nitrogen dioxide 0.1 ppm 0.05㨪1.5 ppm
NOx Nitrogen oxides 1 ppm 0.5㨪5 ppm
࿑1 2 Ბ㓸Ⴒᣇᑼߩ᭴ㅧߣේℂ࿑
Fig. 1 Structure and theory of two stage type ESP.
ၮᧄ᭽ߪᣣᧄ〝࿅㧔㧘ᣣᧄ㜞ㅦ〝ࢃ㧕ߩޟᯏ᪾㔚 ᳇ㅢାᯏ᧚᭽ᦠޠߦ߅ߌࠆޟ࠻ࡦࡀ࡞↪㔚᳇㓸Ⴒᯏ⸳ᮡ Ḱ᭽ᦠޠߢࠆ㧚ᒰ᭽ᦠߦߪ㜞㘑ㅦൻ㜞㓸Ⴒല₸ൻ ߩⷰὐ߆ࠄ2 ᐲߩᡷቯ߇ട߃ࠄࠇ㧘 2 ߩᄌㆫࠍߚߤߞߡ ࠆ㧚৻ㅪߩ㜞ᕈ⢻ൻ㧔㜞㘑ㅦൻ㜞㓸Ⴒല₸ൻ㧕ߩ⚿ᨐ㧘㔚 ᳇㓸Ⴒⵝ⟎ߩන㘑㊂ᒰࠅߩᶖ⾌㔚ജߪჇടߒߚ㧚৻ᣇߢㄭ ᐕ㧘㔚᳇㓸Ⴒⵝ⟎߆ࠄ⊒↢ߔࠆࠝ࠱ࡦ߇㧘࠻ࡦࡀ࡞ឃ᳇ਛߩ ৻㉄ൻ⓸⚛ߣᔕߒ㧘ኂߥੑ㉄ൻ⓸⚛ߩჇടࠍߊߎߣ߇ 㗴ⷞߐࠇߟߟࠆ㧚࠻ࡦࡀ࡞↪㔚᳇㓸Ⴒⵝ⟎ߦ㑐ࠊࠆฦࠟ ࠬᚑಽߩⷙ୯ࠍ߹ߣࠆߣ3 ߣߥࠆ㧚 㔚᳇㓸Ⴒⵝ⟎߆ࠄߩࠝ࠱ࡦ⊒↢ߪਇนㆱߥ⽎ߣ⸒߃ࠆ ߇㧘㜞ᕈ⢻ൻᛛⴚߣࠝ࠱ࡦᛥൻᛛⴚߩਔ┙߇ⅣႺኻ╷↪ߩ 㔚᳇㓸Ⴒⵝ⟎ߦߪᔅⷐߢࠆ㧚 ࠠࡢ࠼㧦㔚᳇㓸Ⴒⵝ⟎㧘ࠝ࠱ࡦ⊒↢㊂㧘࠻ࠥᑼ㔚ᭂ㧘 ࠦࡠ࠽㔚,ᱜ⽶⩄㔚 * ᧻ਅࠛࠦࠪࠬ࠹ࡓ࠭ᩣᑼળ␠㧔486-8522 ᗲ⍮⋵ᤐᣣᏒ 㣔᧪↸ሼਅખ↰4017 ⇟㧕
Matsushita Ecology Systems Co., Ltd., 4017, Takaki-cho Kasugai-city, Aichi-pref. 486-8522, Japan
** ࿖┙ᄢቇᴺੱ ⼾ᯅᛛⴚ⑼ቇᄢቇ㧔441-8580 ᗲ⍮⋵⼾ᯅ
Ꮢᄤષ↸㔕㓴ࡩਐ1-1㧕
National University Corporation Toyohashi University of Technology, 1-1, Hibarigaoka, Tenpaku-ku, Toyohashi-city, Aich-pref. 441-8580, Japan 1 [email protected] Ionizing section Collecting section Soot contained air Soot removed air Discharging pole Earth plate Electrified plate Structure High volt. P/S 2 High volt. P/S 1 Ionizing section Collecting section Soot contained air Soot removed air Discharging pole Earth plate Electrified plate Structure High volt. P/S 2 High volt. P/S 1
論
文
2 ࠻ࡦࡀ࡞↪㔚᳇㓸Ⴒⵝ⟎ߩ᭽ߩᄌㆫ
Table 2 Specification revisions of tunnel ESP for road tunnel. Specification First edition (1987) Revision 1 (1996) Revision 2(2006)
Velocity [m/s] 7 9 9
Polarity Positive Negative 㧔̪2㧕 Positive or Negative
Discharge pole Wire Wire Spike
Soot
Collection [%] 80 80 90
Power Consumption per
unit gas flow [W/(m3/s)] (Approx. 35㧕 ̪1 55 110 ̪1㧦1987 ᐕ ߦᶖ⾌㔚ജߩⷙቯߪή߆ߞߚ߇㧘ᒰᤨߪ㧘 ߨ㧔 㧕ౝߩᢙ୯ߢߞߚ㧚 ̪2㧦1996 ᐕߩᡷ⸓ߢߪ㧘ࠦࡦࡄࠢ࠻ൻߩⷰὐ߆ࠄ㧘ࠃࠅ 㜞㘑ㅦൻߐࠇ㧘߹ߚ㧘㔚✢ߩᢿ✢㓚₸߇ᱜ⩄㔚ᣇᑼࠃ ࠅ߽ૐ⽶⩄㔚ᣇᑼ߇᭽ൻߐࠇߚ㧚 ̪3㧦2006 ᐕߩᡷ⸓ߢߪ㓸Ⴒല₸߇㜞ࠄࠇ㧘߹ߚ㧘ᢿ✢ 㓚ࠍ࿁ㆱߔࠆߚߦ㧘࠻ࠥ㔚ᭂ߇᭽ൻߐࠇߚ㧚 3 ࠟࠬᚑಽߩⷙ୯৻ⷩ
Table 3 Regulation value of gas elements . Gas Chemical symbol Environmental standard
㧔1 hour㧕 Permissible Density 㧔̪1㧕 ACGIH 㧔̪2㧕 Nitrogen
monoxide NO None none 25 ppm
Nitrogen dioxide(NO2) NO2 0.04㨪0.06 ppm none 1 ppm Ozone O3 None (Existing as oxidant 0.06 ppm㧕 0.1 ppm ppm 0.1 ̪1㧦recommendation of Japan Association of Industrial Health㧧ᣣ ᧄ↥ᬺⴡ↢ቇળߩ⸵ኈỚᐲ൘๔㧚
̪2㧦American Conference of Government Industrial Hygienist㧧☨ ࿖↥ᬺⴡ↢⋙〈ળ⼏㧚 ৻⥸ߦ㧘ࠝ࠱ࡦ⊒↢㊂ߪᱜ⩄㔚ߩᣇ߇⽶⩄㔚ࠃࠅ߽ዋߥ ߎߣ߇⍮ࠄࠇߡࠆ2)㧚㧔࿑2 ߪ㧘࠻ࡦࡀ࡞↪㔚᳇㓸Ⴒⵝ⟎ߣ ߒߡ㐳ᐕ↪ߐࠇߡ߈ߚ㔚✢㔚ᭂߩ႐วߩ⥄␠ౝߢߩታ 㛎⚿ᨐߢࠆޕ㧕৻ᣇ㧘㔚✢㔚ᭂߩ႐ว㧘ᢿ✢㓚߇ਇน ㆱߢࠅ㧘㔚᳇㓸Ⴒⵝ⟎ߩ⛽ᜬ▤ℂ㕙ߦ߅ߡਇㇺวࠍ ߡߚ㧚ߘߎߢ㧘ᢿ✢㓚߇⊒↢ߒߥ࠻ࠥ㔚ᭂ߇⌕⋡ߐ ࠇ㧘ࠝ࠱ࡦ⊒↢㊂߇㔚✢㔚ᭂߩᱜ⩄㔚ߣหࡌ࡞ߩ․ᕈࠍ ߔࠆ࠻ࠥ㔚ᭂ߇᳞ࠄࠇࠆࠃ߁ߦߥߞߚ㧚ㆊߦߪ㧘࠻ ࠥ㔚ᭂߩ᧼ෘ߿᧚⾰ߩ㆑ߦࠃࠆࠝ࠱ࡦ⊒↢㊂ߩᄌൻࠍ ␜ߔႎ๔3)㧘߹ߚ᧼ෘߣࠬ࠻ࡑߩ㑐ଥࠍ␜ߔႎ๔ ߥߤ ߇⊒ߐࠇߡࠆޕ࿁㧘ฦ⒳ᒻ⁁ߩ࠻ࠥ㔚ᭂߩࠝ࠱ࡦ⊒ ↢㊂ࠍᲧセߒ㧘ࠝ࠱ࡦᛥߩน⢻ᕈࠍߔߎߣߣߒߚ㧚 ࿑2 ᱜ⽶ࠦࡠ࠽㔚ߩࠝ࠱ࡦ⊒↢․ᕈ
Fig. 2 Characteristics of ozone generation by positive or negative corona discharge. 2. ታ㛎ᚻ㗅 ᧄታ㛎ߢߪ㧘Ꮺ㔚ㇱߩ࠻ࠥߩ᭴ㅧࠍᄌൻߐߖࠆߎߣߦࠃࠅ㧘 㔚㔚ᵹ㧘ࠝ࠱ࡦ⊒↢㊂߅ࠃ߮㓸Ⴒല₸߇ߤߩࠃ߁ߦᄌࠊࠆ ߆ࠍ⺞ߴࠆߎߣࠍ⋡⊛ߣߒߚ㧚࿑3 ߦታ㛎ⵝ⟎ߩ᭴ᚑࠍ㧘߹ ߚ4 ߦ᭽߅ࠃ߮᧦ઙࠍ␜ߔ㧚㘑ߦ㧘☳Ⴒߩ⊒↢Ḯߢ ࠆ࠺ࠖ࡞ࠛࡦࠫࡦ⊒㔚ᯏߩឃ᳇ญࠍ㈩⟎ߒ㧘㘑ਅߦ ะ߆ߞߡᏪ㔚ㇱ㓸Ⴒㇱࠍ㧘ߘߒߡᦨ߽㘑ਅߦࠗࡦࡃ࠲ ᓮߦࠃࠆ㘑㊂นᄌᑼߩㅢ㘑ࡈࠔࡦࠍ㈩⟎ߒߚᏪ㔚ㇱߩ㘑 ⚂2 m ߅ࠃ߮㓸Ⴒㇱߩ㘑ਅ⚂ 3 m ߩ⟎ߦ☳ႲỚᐲߣ ࠝ࠱ࡦỚᐲߩ⸘᷹┵ࠍ⸳ߌߚ ᱜ⩄㔚ߣ⽶⩄㔚ߩਔ⠪ߦߟ ߡ᷹ቯࠍⴕߥߞߚ㧚⋥ᵹߩ㜞㔚Ḯߦߪ㔚⸘߅ࠃ߮㔚ᵹ⸘ ߇ࠊߞߡ߅ࠅ㧘ജ㔚ߩ࠶ࡊ࡞㧔⣂േ㧕ߪr3%એౝߢ ࠆ㧚 ࿑3 ታ㛎ⵝ⟎᭴ᚑ
Fig.3 Schematic diagram of tested ESP. Wire diameter: 0.26[mm] Material: Tungsten 㪇 㪇㪅㪉 㪇㪅㪋 㪇㪅㪍 㪇 㪌㪇 㪈㪇㪇 㪈㪌㪇 㪉㪇㪇 㪧㫆㫎㪼㫉 㪚㫆㫅㫊㫌㫄㫇㫋㫀㫆㫅 㫇㪼㫉 㫌㫅㫀㫋 㪾㪸㫊㩷㪽㫃㫆㫎 㫉㪸㫋㪼㪲㪮㪆㩿㫄㪊㪆㫊㪀㪴 㪦 㫑㫆 㫅㪼 㩷㪞 㪼 㫅 㪼 㫉㪸 㫋㫀 㫆 㫅 㪲㫇 㫇㫄 㪴 㪧㫆㫊㫀㫋㫀㫍㪼 㪥㪼㪾㪸㫋㫀㫍㪼 APOA360 Digital dust counter
AP632T Ozone meter
㬍
㬍
Air flow Fan Air flow High voltage Power supply Voltmeter/Ammeter Ionizing section with each spikeCollecting section Chamber
Temperature/ Humidity
is constant. Diesel engine
APOA360 Digital dust counter
AP632T Ozone meter
㬍
㬍
Air flowAir flowFan Air flow Fan Air flow Air flow High voltage Power supply Voltmeter/Ammeter Ionizing section with each spike
Collecting section Chamber
Temperature/ Humidity
4 ታ㛎ⵝ⟎ߩ᭽߅ࠃ߮ታ㛎᧦ઙ
Table 4 Specifications and conditions on experiments.
Items Details Duct W;940mm 㧘 H;780mm 㧘 L;12,500mm Flow rate 0.17 m
3/s for measuring ozone
5 m3/s for measuring soot collection
(9m/s for line velocity in ESP) (Positive discharge) W;900mm 㧘 H;720mm 㧘 L;300mm (Negative discharge) W;900mm 㧘 H;720mm 㧘 L;170mm Ionizing section (Common)
Material of spikes and plates;SUS304 Thickness of spikes and plates; 0.5mm Voltage; Variable (positive or negative) Collecting
section
(Common for positive and negative) W;900mm 㧘 H;720mm 㧘 L;800mm Material of plates; SUS304
Thickness of plates; 0.4mm Voltage; 9kV (positive or negative) Gap of adjoining plates; 10mm Meters
For ozone ; APOA360 type
(HORIBA㧘 ultraviolet absorption) For soot concentration ; AP632T type
(SHIBATA㧘 light scattering) Diesel engine Type: 4BD1-T (ISUZU) Displacement volume:4000cc
High voltage power supply
Controlled phase by thyristor and duplicated voltage type (Origin Electric)
Max. rate DCr12kV, 150mA
࿑ 4 ߦ࠻ࠥᑼ㔚ᭂߩ౮⌀ࠍ␜ߔ࠻ࠥᒻ⁁ࠍవ┵ⷺᐲ
㧔Angle㧕㧘 㜞ߐ㧔Height㧕㧘 ࡇ࠶࠴㧔Pitch㧕㧘࠻ࠥ㔚ᭂ㑆
㓒㧔Gap㧕ߢߒ㧘Angle ߣ Pitch ࠍᄌൻߐߖߚ㧚Height ߪ 10 mm ߦ㧘Gap ߪ 12 mm ߦ࿕ቯߒߚ.ᧄታ㛎ߦ߅ߌࠆ࠻ࠥᒻ
⁁ߩታ㛎᧦ઙࠍ5 ߦ␜ߔ
㔚㔚ᵹ߅ࠃ߮㓸Ⴒല₸ࠍ᷹ቯߔࠆ႐วߪ㧘ಣℂ㘑㊂ࠍ5
m3/s ߣߒ㧘☳ႲỚᐲࠍ⚂ 0.5 mg/m3ߣߒߚࠝ࠱ࡦ⊒↢㊂ࠍ᷹
࿑4 ࠻ࠥᑼ㔚ᭂ᭴ᚑ
Fig. 4 Composition of spike electrode.
5 ࠻ࠥᒻ⁁ߩታ㛎᧦ઙ
Table 5 Condition of spike electrode. Experimental
case Angle [deg] [mm] Pitch
Unit per power consumption [W/(m3/s)] ̪1 Ԙ 20 4 98 ԙ 30 4 126 Ԛ 40 4 103 ԛ 20 8 56 Ԝ 30 8 108 ԝ 40 8 117 Ԟ 20 12 70 ㅊടԟ̪2 30 12 174 ㅊടԠ̪2 40 12 103 ̪1㧦࿑ 8 ߩታ㛎ߦ߅ߌࠆታ㛎᧦ઙࠍ␜ߔ㧚 ̪2㧦࿑ 8 ߩታ㛎ߩߺታᣉߒߚ㧚 ቯߔࠆ႐วߪ㧘ࠝ࠱ࡦߩ⊒↢㊂ࠍࠃࠅᱜ⏕ߦ᷹ࠆߚߦ㧘ಣ ℂ㘑㊂ࠍ0.17 m3/s ߦਅߍߡታ㛎ߒߚߘߩ㓙㧘Ꮺ㔚ㇱߢ↢ᚑ ߒߚࠝ࠱ࡦ߇࠺ࠖ࡞ឃ᳇ߣᔕߔࠆߎߣࠍㆱߌࠆ⋡⊛ ߢ㧘࠺ࠖ࡞ࠛࡦࠫࡦ⊒㔚ᯏߪᱛߒߚ 3. ⚿ᨐߣ⠨ኤ ࿑5 ߦ㔚㔚ᵹߩ㔚․ᕈࠍ␜ߔ㧚⽶⩄㔚ߩ႐ว㧘ฦ᧦ઙ ߢห᭽ߩะࠍ␜ߒ㧘ශട㔚ߩߦኻߔࠆ㔚㔚ᵹߩჇ ടߩഀวߪ㧘ᒻ⁁ߦࠃࠄߕ߶߷৻ቯߢࠆ㧚⽶⩄㔚ߢߪቯ ߥࠣࡠ㗔ၞߩ㔚߇⊒↢ߔࠆߚߢࠆ㧚৻ᣇ㧘ᱜ⩄㔚ߩ ႐ว㧘㔚㔚ᵹߩჇടᐲว߇࠻ࠥᒻ⁁ߦࠃߞߡ⇣ߥࠆ㧚ߎࠇ ߪᱜ⩄㔚ߢߪࠬ࠻ࡑ㔚ߦㅴዷߒ߿ߔߊ4)㧘࠻ࠥᒻ⁁ߦ ࠃߞߡࠬ࠻ࡑ߳ߩ⒖ⴕ᧦ઙ߇⇣ߥࠆ߆ࠄߢࠆ㧚 ᰴߦ࿑6 ߦࠝ࠱ࡦ⊒↢․ᕈࠍ␜ߔ㧚ዏ㧘᧦ઙԙԚߪᰳ᷹ߒ ߚ㧚⽶⩄㔚ߩ႐ว㧘ᶖ⾌㔚ജߦኻߔࠆࠝ࠱ࡦ⊒↢㊂ߩะߪ ᒻ⁁ߦࠃࠄߕ߶߷৻ቯߢࠅ㧘ᱜ⩄㔚ߩ㔚✢ߣᲧセߒߡ⚂ 5 ߢࠆ㧚 ࿑5 㔚㔚ᵹߩ㔚․ᕈ
Fig. 5 Discharge current as a function of applied voltage. Pitch Gap Height Angle Discharge pole Earth plate Pitch Gap Height Angle Discharge pole Earth plate 0 5 10 15 20 6 7 8 9 10 Voltage[kV] D is ch ar ge C ur re nt pe r u ni t g as fl ow ra te [ m A /(m 3/s)] 㽲 㽳 㽴 㽵 㽶 㽷 㽸 (a)Negative 0 5 10 15 20 6 7 8 9 10 Voltage[kV] D is ch ar ge C ur re nt pe r u ni t g as fl ow ra te [ m A /(m 3/s)] 㽲 㽳 㽴 㽵 㽶 㽷 㽸 (a)Negative 0 5 10 15 20 6 7 8 9 10 Voltage[kV] D is ch ar ge c ur re nt p er u ni t g as fl ow ra te [ m A /(m 3/s)] 㽲 㽳 㽴 㽵 㽶 㽷 㽸 (b)Positive 0 5 10 15 20 6 7 8 9 10 Voltage[kV] D is ch ar ge c ur re nt p er u ni t g as fl ow ra te [ m A /(m 3/s)] 㽲 㽳 㽴 㽵 㽶 㽷 㽸 (b)Positive
࿑6 ฦታ㛎᧦ઙߢߩࠝ࠱ࡦ⊒↢Ớᐲߦኻߔࠆᵈ㔚ജ․ᕈ Fig. 6 Ozone concentration as a function of input power for
various experimental cases.
৻ᣇ㧘ᱜ⩄㔚ߩ႐ว㧘ࠝ࠱ࡦ⊒↢․ᕈߪ࠻ࠥߩᒻ⁁᭴ㅧߦ ᄢ߈ߥᓇ㗀ࠍฃߌߡࠆ㧚࠻ࠥߩᒻ⁁᭴ㅧ㔚⇇ᒝᐲߦࠃ ࠅ㧘㔚ᒻᘒ߇ᄌൻߔࠆߚߣ⠨߃ࠆ㧚ਛߢ߽․ᓽ⊛ߢࠆ ߩߪ㧘ᶖ⾌㔚ജߩჇടߦኻߒߡࠝ࠱ࡦ⊒↢㊂߇৻ᤨ⊛ߦዋߥ ߊߥࠆะ߇ࠄࠇࠆߎߣߢࠆ㧚ߎߩะ߇ᦨ߽㗼⪺ߥ᧦ ઙԞߦ㑐ߒߡߪ㧘ࠝ࠱ࡦ⊒↢㊂ߩᭂዊ୯ߪ㧘㔚✢㔚ᭂߩᱜ ⩄㔚ᣇᑼߣ߶߷หߓࡌ࡞ߣߥߞߡࠆ㧚ߎߩ․ᓽ⊛ߥะ ߇ࠄࠇࠆේ࿃ࠍᛠីߔࠆߚ㧘᧦ઙԞߩ࠻ࠥᒻ⁁ࠍ↪ߡ 㔚ߩ᭽ሶߣ㔚ᵹᵄᒻࠍ⏕ߒߚ㧚࿑7 ߦߘߩ⚿ᨐࠍ␜ߔ㧚 ᧦ઙԞߦߟߡ㧘ࠦࡠ࠽㔚㐿ᆎ߆ࠄᶖ⾌㔚ജ߇⚂50 W/ (m3/s)ㄥߩ㧘 ᶖ⾌㔚ജߩჇടߣߦࠝ࠱ࡦ⊒↢㊂߇Ⴧടߔࠆ ▸࿐㧔㗔ၞ1 ߣߔࠆ㧕ߢߪ㧘࿑ 7(1) ߦ␜ߔࠃ߁ߦࠦࡠ࠽㔚 ߪࡉࠪ⁁ߦિ߮ߡࠆ㧚ࡉࠪࠦࡠ࠽ߦಽ㘃ߐࠇࠆ㔚᭽ ᘒߢࠆ 2,5)㧚㔚ᵹᵄᒻߪ㧘ᢙචPs ᦼߩࡄ࡞ࠬ⁁ߩ⣂േᵄ ᒻ߇᷹ⷰߐࠇ㧘㔚ߩ㧔ᶖ⾌㔚ജߩჇട㧕ߣߦࡄ࡞ࠬ ߩᝄߪᄢ߈ߊߥߞߚ㧚 ࿑7 ᱜ⩄㔚ࠦࡠ࠽㔚ߩ᭽ሶߣ㔚ᵹᵄᒻ
Fig. 7 Corona shape and Current ripple. Camera: Canon 20D㧘 Lens: Canon 300mm㧘
Sensitivity: ISO 1600㧘 Shutter speed: 30sec.
Oscilloscope: Tektronix DPO4104㧘Probe: Tektronix TCP312 Horizontal axis: 40Ǵs /div. Vertical axis: 10mA/div.
㧔1㧕Area 1 of Fig.6 㧔2㧕Area 2 of Fig.6 㧔3㧕Area 3 of Fig.6 0 0.2 0.4 0.6 0.8 1 0 50 100 150 200 250 300
Power Consumption per unit gas flow rate[W/(m3/s)]
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㽲 㽵 㽶 㽷 㽸 㪮㫀㫉㪼 Area 2 Area 1 Area 3(b)Positive
0 0.2 0.4 0.6 0.8 1 0 50 100 150 200 250 300Power Consumption per unit gas flow rate[W/(m3/s)]
O
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㽲 㽵 㽶 㽷 㽸 㪮㫀㫉㪼 Area 2 Area 1 Area 3(b)Positive
0 0.2 0.4 0.6 0.8 1 0 50 100 150 200 250 300Power Consumption per unit gas flow rate[W/(m3/s)]
O zo ne G en er at io n[ pp m ] 㽲 㽵 㽶 㽷 㽸 㪮㫀㫉㪼 (a)Negative 0 0.2 0.4 0.6 0.8 1 0 50 100 150 200 250 300
Power Consumption per unit gas flow rate[W/(m3/s)]
O zo ne G en er at io n[ pp m ] 㽲 㽵 㽶 㽷 㽸 㪮㫀㫉㪼 (a)Negative ࠻ࠥ㔚ᭂవ┵ ធ㔚ᭂ
ᰴߦᶖ⾌㔚ജ⚂50W/(m3/s)߆ࠄ⚂ 150W/(m3/s)ㄥߩ㧘ᶖ⾌ 㔚ജߩჇടߦኻߒߡࠝ࠱ࡦ⊒↢㊂߇ᷫዋߔࠆ▸࿐㧔㗔ၞ2 ߣ ߔࠆ㧕ߢߪࡉࠪ⁁ߦિ߮ߚࠦࡠ࠽㔚߇ήߊߥࠅ㧘࿑7(2) ߦ␜ߔࠃ߁ߦ࠻ࠥవ┵ㇱߢ⁁ߩࠦࡠ࠽㔚߇⊒↢ߒߚ㧚ࠣ ࡠࠦࡠ࠽㔚ߦಽ㘃ߐࠇࠆ㔚᭽ᘒߢࠆ2)㧚หᤨߦ㧘࠻ ࠥవ┵ㇱߩߺߥࠄߕ㔚ᭂߩ┵ㇱో߆ࠄធᭂ᧼ߦะ߆ ߞߡ㧘ဋ৻ߥࠛࠕࠞ࠹ࡦ⁁ߩᓸᒙߥ㔚߇⋡ⷞߢ⏕ߐࠇ ߚ㧚৻ᣇ㧘㔚ᵹᵄᒻߪ㗔ၞ1 ߢჇᄢߒߚࡄ࡞ࠬ⁁ߩ⣂േᵄᒻ ߩᝄ߇㧘ᓢޘߦዊߐߊߥࠆߎߣࠍ⏕ߒߚ㧚 ᶖ⾌㔚ജ⚂150 W/(m3/s)એߩ㧘ౣ߮ᶖ⾌㔚ജߩჇടߣ ߦࠝ࠱ࡦ⊒↢㊂߽Ⴧടߔࠆ▸࿐㧔㗔ၞ3 ߣߔࠆ㧕ߢߪ㧘࿑ 7(3) ߦ␜ߔࠃ߁ߦធᭂㄭㄝ߹ߢᑧ߮ߚࠬ࠻ࡑ߇᷹ⷰߐࠇ ߚ㧚ࠬ࠻ࡑࠦࡠ࠽㔚ߦಽ㘃ߐࠇࠆ㔚᭽ᘒߢࠆ2)㧚 㔚ᵹᵄᒻߪ㧘ౣ߮ࡄ࡞ࠬ⁁ߩ⣂േᵄᒻߣߥࠅ㧘ߘߩᝄ߇㗔 ၞ1 ࠃࠅᄢ߈ߊߥߞߡࠆ㧚 ᧦ઙԞએᄖߩ᧦ઙԛԜԝߦߟߡ߽㧘ᶖ⾌㔚ജߩჇടߦኻ ߒߡࠝ࠱ࡦ⊒↢㊂߇ᷫዋߔࠆ㗔ၞ߇ሽߒߚ㧚ߎߩ㗔ၞࠍ㗔 ၞ2 ߣቯ⟵ߔࠆ㧚㧔߹ߚ㧘ᶖ⾌㔚ജ߇ߘࠇࠃࠅዊߐ㗔ၞࠍ 㗔ၞ㧝ߣቯ⟵ߒ㧘ߘࠇࠃࠅᄢ߈㗔ၞࠍ㗔ၞ㧟ߣቯ⟵ߔࠆ㧚㧕 ᧦ઙԛԜߦ߅ߌࠆ㗔ၞ2 ߪ㧘ᶖ⾌㔚ജ⚂ 170W/(m3/s)߆ࠄ⚂ 270W/(m3/s)㧘᧦ઙԝߢߪ㧘ᶖ⾌㔚ജ⚂ 250 W/(m3/s)߆ࠄ⚂ 350W/(m3/s)㧔࿑␜ߖߕ㧕ߩ▸࿐ߢࠆ㧚ߎࠇࠄฦ᧦ઙߩ㗔ၞ 2 ߩ▸࿐ߢߪ㧘㔚᭽ᘒߪࠣࡠ㔚ߢߞߚ㧚 ᦨᓟߦ᧦ઙԘߦߟߡ㧘ࠝ࠱ࡦ⊒↢㊂ߪࠦࡠ࠽㔚㐿ᆎߣ ߦჇടߒ㧘࿑␜ߒߡߥ߇ᶖ⾌㔚ജ318 W/(m3/s)㧘ࠝ࠱ ࡦ⊒↢㊂1.13 ppm ߹ߢ⋥✢⊛ߦჇടߒߚ㧚ࠝ࠱ࡦ⊒↢㊂߇ ᷫዋߔࠆ▸࿐ߪ⏕ߢ߈ߥ߆ߞߚ㧚᧦ઙԘߩ㔚᭽ᘒߪޔᶖ ⾌㔚ജ⚂50 W/(m3/s)߹ߢߪࡉࠪࠦࡠ࠽߇ⷰኤߐࠇ㧘ߘࠇએ 㒠ߪࠬ࠻ࡑࠦࡠ࠽߇ⷰኤߐࠇߚ㧚 ߎߩࠃ߁ߦ㔚᭽ᘒ᷹ⷰߩ⚿ᨐ㧘ࠝ࠱ࡦߩ⊒↢㊂ߪ㔚᭽ ᘒߦଐሽߒߡࠆߎߣ߇್ߒߚ6)㧚 ৻⥸ߦᱜ⩄㔚ߩ㔚᭽ᘒߪ㔚⇇ᒝᐲߩߣߣ߽ߦࡉ ࠪࠦࡠ࠽Јࠣࡠࠦࡠ࠽Јࠬ࠻ࡑࠦࡠ࠽ߦㆫ⒖ߔࠆߣ ⸒ࠊࠇߡࠆ2)㧚࿁ߩታ㛎⚿ᨐߦ߅ߡߪ㧘㗔ၞ1 ߇ࡉ ࠪࠦࡠ࠽㗔ၞ㧘㗔ၞ3 ߇ࠬ࠻ࡑࠦࡠ࠽㗔ၞ㧘ߘߒߡ㧘㗔 ၞ2 ߪ㧘ࡉࠪࠦࡠ࠽߆ࠄ⤑⁁ࠣࡠࠦࡠ࠽ߦ⒖ⴕߒߚ㗔ၞ ߢࠆ㧚㗔ၞ2 ߩሽߪታ㛎⋡⊛ߩត᳞ߦലߢ㧘ᱜ⩄㔚ߦ ߅ߡ㗔ၞ2 ߩ․ᕈࠍߔࠆ࠻ࠥᒻ⁁ࠍㆬᛯߔࠇ߫,ࠝ࠱ࡦ ⊒↢㊂ࠍᛥߢ߈ࠆน⢻ᕈ߇ࠆ߽ߩߣ⠨߃ߚ㧚 ࿑8 ߪ㧘㔚⇇ᒝᐲࠍ 0.67 kV/mm(Gap12 mm, ශട㔚 8 kV) ߦߡ৻ቯߣߒ㧘ᮮゲࠍ࠻ࠥࡇ࠶࠴㧘❑ゲࠍࠝ࠱ࡦ⊒↢㊂ߣߒ ߚࠣࡈߢࠅ㧘ฦࡊࡠ࠶࠻ㄭறߩᒐౝߩᢙሼߪ㗔ၞ1㨪 㗔ၞ3 ߦኻᔕߒߡࠆ㧚ታ㛎᧦ઙߪ 5 ߩԘ߆ࠄԠߣߒߚ㧚 ዏ㧘ᰳ᷹ߒߚ᧦ઙԙԚߪౣ᷹ቯߒߚ㧚ߎࠇࠃࠅ㧘ᱜࠦࡠ࠽ ࿑8 ࠝ࠱ࡦ⊒↢Ớᐲߩ࠻ࠥࡇ࠶࠴․ᕈ
Fig. 8 Ozone concentration as a function of spike pitch. 㔚ߦ߅ߡߪ㧘࠻ࠥࡇ࠶࠴߇ᄢ߈߶ߤࠝ࠱ࡦ⊒↢㊂ߪዋߥ ߊߥࠆ㧚ㅒߦ㧘࠻ࠥࡇ࠶࠴߇⁜⒟ࠝ࠱ࡦ⊒↢㊂߇ᄙߊߥࠆ ߩߪ㧘㔚⇇ߩਇᐔ╬ᕈ߇✭ߐࠇ㧘ⓨ㑆ߩ㔚⇇ᒝᐲ߇㜞ߊߥ ࠆߚ㧘ࡉࠪࠦࡠ࠽ߩᒻᘒߦߪߥࠄߕ㧘ធ᧼ㄭㄝ߹ߢࠬ ࠻ࡑ߇ᑧ߮ࠆ᭽ᘒߢࠦࡠ࠽㔚߇⊒↢ߒߡߚ߆ࠄߣ ផኤߔࠆ5,7,8,9)㧚ࠃߞߡ㧘ࠬ࠻ࡑࠦࡠ࠽ߩⓨ㑆㗔ၞ߇ᄢ߈ ߚ㧘ࠝ࠱ࡦ↢ᚑ߇㗼⪺ߦⴕߥࠊࠇߚ߽ߩߣ⠨߃ߡࠆ㧚 ࠻ࠥࡇ࠶࠴߇ᐢ߇ࠆߦߟࠇߡ㧘࠻ࠥవ┵߳ߩ㔚⇇㓸ਛ߇㗼⪺ ߣߥࠅ㧘ⓨ㑆ߩ㔚⇇ᒝᐲ߇ૐਅߒߡࠬ࠻ࡑߩિዷ߇ᛥ ߐࠇ8)㧘ࠣࡠࠦࡠ࠽߳⒖ⴕߔࠆߚࠝ࠱ࡦ↢ᚑߩᛥߦߟ ߥ߇ߞߚߣផኤߔࠆ㧚߹ߚ㧘ᱜ⩄㔚ߩࠬ࠻ࡑࠦࡠ࠽㗔ၞ ߦ߅ߌࠆࠝ࠱ࡦ↢ᚑ㊂߇㧘⽶⩄㔚ߩࠣࡠࠦࡠ࠽㗔ၞߩࠝ࠱ ࡦ↢ᚑ㊂ࠃࠅ㜞ߊߥࠆ႐ว߇ࠆߎߣ߇⏕ߢ߈ߚ㧚 ࿑9 ߦ㔚ᭂ᧦ઙ㧔 5㧘Ԙ㨪Ԟ㧕ߣ㓸Ⴒല₸ߩ㑐ଥࠍ␜ߔ㧚 ᶖ⾌㔚ജࠍ50 W/(m3/s)৻ቯߦߜ㧘㓸Ⴒല₸ࠍ᷹ቯߒߚ㧚 ⽶⩄㔚ߩ႐ว㧘ߕࠇߩ᧦ઙߦ߅ߡ߽߶߷ 80%೨ᓟߩ 㓸Ⴒല₸߇ᓧࠄࠇߚ㧚ߎࠇߪቯߥࠣࡠ㔚߇⊒↢ߒߚߚ 10-12)ߣ⠨߃ࠆ ৻ᣇ㧘ᱜ⩄㔚ߩ႐ว㧘ታ㛎᧦ઙߦࠃߞߡ㓸Ⴒല₸ߦ⋧㆑߇ ࠄࠇࠆ㧚࠻ࠥవ┵ⷺ߇20 ᐲߩ᧦ઙԘ㧔ࡇ࠶࠴ 4 mm㧕㧘ԛ 㧔8 mm㧕߅ࠃ߮Ԟ㧔12 mm㧕ࠍᲧセߔࠆߣ㧘࠻ࠥࡇ࠶࠴ࠍ ᐢߍߚᣇ߇㧘㓸Ⴒല₸߇㜞ߊߥߞߡࠆ㧚వ┵ⷺ߇ 30 ᐲߩ ᧦ઙԙ㧔ࡇ࠶࠴4 mm㧕ߣԜ㧔8 mm㧕ࠍᲧセߒߡ߽ࡇ࠶࠴ߩ ᐢᣇ߇㓸Ⴒല₸ߪ㜞ߊߥߞߡ߅ࠅ㧘ߐࠄߦ㧘వ┵ⷺ߇ 40 ᐲߩ᧦ઙԚ㧔ࡇ࠶࠴4 mm㧕ߣԝ㧔8 mm㧕ࠍᲧセߒߡ߽㧘ࡇ ࠶࠴ߩᐢᣇ߇㧘㓸Ⴒല₸߇㜞ߊߥߞߡࠆ㧚ߎߩℂ↱ߪ㧘 0.00 0.05 0.10 0.15 0 4 8 12 16 Pitch[mm] O zo ne G en er at io n pe r p ow er co ns um pt io n pe r u ni t g as fl ow ra te [p pm /䋨 W ×( m 3/ s) )] Positive Negative 㪇㪅㪇㪇 㪇㪅㪇㪌 㪇㪅㪈㪇 㪇㪅㪈㪌 㪇 㪋 㪏 㪈㪉 㪈㪍 㪧㫀㫋㪺㪿㪲㫄㫄㪴 㪦 㫑㫆 㫅 㪼 㪞 㪼 㫅 㪼 㫉㪸 㫋㫀 㫆 㫅 㫇 㪼 㫉 㫇 㫆 㫎 㪼 㫉 㪺 㫆 㫅 㫊㫌 㫄 㫇㫋 㫀㫆 㫅 㫇 㪼 㫉 㫌 㫅㫀 㫋 㪾㪸 㫊㩷 㪽㫃 㫆 㫎 㫉㪸 㫋㪼 㪲㫇 㫇 㫄 㪆 䋨 㪮 㬍 㩿㫄 㪊 㪆 㫊㪀 㪀㪴 㪧㫆㫊㫀㫋㫀㫍㪼 㪥㪼㪾㪸㫋㫀㫍㪼 㪇㪅㪇㪇 㪇㪅㪇㪌 㪇㪅㪈㪇 㪇㪅㪈㪌 㪇 㪋 㪏 㪈㪉 㪈㪍 㪧㫀㫋㪺㪿㪲㫄㫄㪴 㪦 㫑㫆 㫅 㪼 㩷㪞 㪼 㫅 㪼 㫉㪸 㫋㫀 㫆 㫅 㩷㫇 㪼 㫉 㫇㫆 㫎 㪼 㫉 㪺 㫆 㫅 㫊㫌 㫄 㫇㫋 㫀㫆 㫅 㩷㫇 㪼 㫉 㫌 㫅 㫀㫋 㪾㪸 㫊㩷 㪽㫃 㫆 㫎 㫉㪸 㫋㪼 㪲㫇 㫇㫄 㪆 䋨 㪮 㬍 㩿㫄 㪊 㪆 㫊㪀 㪀㪴 㪧㫆㫊㫀㫋㫀㫍㪼 㪥㪼㪾㪸㫋㫀㫍㪼 Gap: 12[mm] (a)Angle 20[deg.] (c)Angle 40[deg.] (b)Angle 30[deg.] (3) (3) (3) (1) (1) (1) (2) (2) (2) 0.00 0.05 0.10 0.15 0 4 8 12 16 Pitch[mm] O zo ne G en er at io n pe r p ow er co ns um pt io n pe r u ni t g as fl ow ra te [p pm /䋨 W ×( m 3/ s) )] Positive Negative 㪇㪅㪇㪇 㪇㪅㪇㪌 㪇㪅㪈㪇 㪇㪅㪈㪌 㪇 㪋 㪏 㪈㪉 㪈㪍 㪧㫀㫋㪺㪿㪲㫄㫄㪴 㪦 㫑㫆 㫅 㪼 㪞 㪼 㫅 㪼 㫉㪸 㫋㫀 㫆 㫅 㫇 㪼 㫉 㫇 㫆 㫎 㪼 㫉 㪺 㫆 㫅 㫊㫌 㫄 㫇㫋 㫀㫆 㫅 㫇 㪼 㫉 㫌 㫅㫀 㫋 㪾㪸 㫊㩷 㪽㫃 㫆 㫎 㫉㪸 㫋㪼 㪲㫇 㫇 㫄 㪆 䋨 㪮 㬍 㩿㫄 㪊 㪆 㫊㪀 㪀㪴 㪧㫆㫊㫀㫋㫀㫍㪼 㪥㪼㪾㪸㫋㫀㫍㪼 㪇㪅㪇㪇 㪇㪅㪇㪌 㪇㪅㪈㪇 㪇㪅㪈㪌 㪇 㪋 㪏 㪈㪉 㪈㪍 㪧㫀㫋㪺㪿㪲㫄㫄㪴 㪦 㫑㫆 㫅 㪼 㩷㪞 㪼 㫅 㪼 㫉㪸 㫋㫀 㫆 㫅 㩷㫇 㪼 㫉 㫇㫆 㫎 㪼 㫉 㪺 㫆 㫅 㫊㫌 㫄 㫇㫋 㫀㫆 㫅 㩷㫇 㪼 㫉 㫌 㫅 㫀㫋 㪾㪸 㫊㩷 㪽㫃 㫆 㫎 㫉㪸 㫋㪼 㪲㫇 㫇㫄 㪆 䋨 㪮 㬍 㩿㫄 㪊 㪆 㫊㪀 㪀㪴 㪧㫆㫊㫀㫋㫀㫍㪼 㪥㪼㪾㪸㫋㫀㫍㪼 Gap: 12[mm] (a)Angle 20[deg.] (c)Angle 40[deg.] (b)Angle 30[deg.] (3) (3) (3) (1) (1) (1) (2) (2) (2)
࿑9 ฦታ㛎᧦ઙߦ߅ߌࠆ㓸Ⴒല₸ Fig. 9 Collection efficiency in each case.
ᰴߩࠃ߁ߦ⠨߃ࠄࠇࠆ ࿁ߩታ㛎᧦ઙߢࠆ࠻ࠥᒻ⁁ߩ㜞 ߐ߇10mm,ⷺᐲ߇ 20 ᐲ߆ࠄ 40 ᐲ㧘࠻ࠥ㔚ᭂ㑆㓒 12 mm ߦ ߅ߡߪ㧘࠻ࠥࡇ࠶࠴߇⁜ߣࠬ࠻ࡑࠦࡠ࠽ߩᒻᘒߦߥ ࠅ߿ߔߊ 㧘ࠬ࠻ࡑਛߢߪᱜ⽶ਔᭂᕈߩࠗࠝࡦ߇ሽߔ ࠆ ߎߩߚ㧘⩄㔚ല₸߇ૐਅߔࠆ ߎߣ߇⠨߃ࠄࠇࠆ㧚߹ ߚࠬ࠻ࡑߪ࠴ࡖࡦࡀ࡞߇⚦㐳ߊિዷߔࠆߚ㧘⋧ਗ߱࠻ ࠥߩਛ㑆⟎ߢߪ㧘ࠗࠝࡦኒᐲ߽ૐਅߔࠆߣ⠨߃ࠄࠇࠆ㧚හ ߜ㧘ࠬ࠻ࡑࠦࡠ࠽ߩ႐ว⩄㔚ⓨ㑆ߩࠗࠝࡦಽᏓߦ㧘⇹ ߥㇱಽߣኒߥㇱಽ߇↢ߓ㧘☳Ⴒ߳ߩᏪ㔚ലᨐ߇ૐߊߥࠆߚ㧘 㓸Ⴒല₸߇ૐਅߔࠆߣផ᷹ߔࠆ㧚ߣߎࠈ߇㧘࠻ࠥࡇ࠶࠴߇ᐢ ߣ㧘ࠬ࠻ࡑߩિዷ߇ᛥߐࠇ㧘࠻ࠥㄭறߦ㔚㔌ㇱ߇㒢 ቯߐࠇࠆߘߎ߆ࠄᱜࠗࠝࡦ߇㔚⇇ߦᴪߞߡ⩄㔚ⓨ㑆ߦㆇ߫ ࠇࠆߚ㧘⩄㔚ⓨ㑆ਛߩࠗࠝࡦಽᏓߩဋ৻ᕈ߇㜞߹ࠅ㧘Ⴒ၎ ߳ߩ⩄㔚߇⦟ᅢߦⴕࠊࠇࠆߘߩ⚿ᨐ㧘㓸Ⴒല₸߇㜞߹ࠆߣ ផኤߐࠇࠆ㧚 4. ⚿⺰ ࠝ࠱ࡦ⊒↢㊂ߩዋߥ㔚᳇㓸Ⴒⵝ⟎ࠍታߔࠆߚߦ㧘 Ꮺ㔚ㇱߩ࠻ࠥ㔚ᭂࠍ᭴ᚑߔࠆ᧦ઙ㧔࠻ࠥవ┵ⷺ㧘࠻ࠥࡇ࠶࠴㧕 ࠍᄌൻߐߖ㧘ࠝ࠱ࡦ⊒↢㊂ߣ㓸Ⴒല₸ࠍ⹏ଔߒߚ.ᓧࠄࠇߚౝ ኈࠍ߹ߣࠆߣએਅߩㅢࠅߢࠆ㧚 (1) ⽶⩄㔚ߩ႐ว㧘࠻ࠥߩ᭴ᚑ᧦ઙ߇⇣ߥߞߡ߽㧘 㔚㔚ᵹ․ᕈ㧘ࠝ࠱ࡦ⊒↢․ᕈ߅ࠃ߮㓸Ⴒല₸․ᕈߦ 㗼⪺ߥᏅ⇣ߪߥ߆ߞߚ㧚 (2) ᱜ⩄㔚ߩ႐ว㧘࠻ࠥߩ᭴ᚑ᧦ઙ߇⇣ߥࠆߣ㧘㔚㔚 ᵹ․ᕈ㧘ࠝ࠱ࡦ⊒↢․ᕈ߅ࠃ߮㓸Ⴒല₸․ᕈߦ㗼⪺ ߥᏅ⇣߇ࠄࠇߚ㧚 (3) ᱜ⩄㔚ߩ႐ว㧘࠻ࠥᒻ⁁ߦࠃߞߡߪᶖ⾌㔚ജߩჇട ߣߣ߽ߦࠝ࠱ࡦ⊒↢㊂߇ૐਅߔࠆ㗔ၞ߇ࠆߎߣ ࠍ⏕ߒߚ㧚ߎࠇߪ㧘㔚᭽ᘒ߇ࠬ࠻ࡑࠍ߁ ࡉࠪࠦࡠ࠽߆ࠄࠣࡠࠦࡠ࠽ߦ⒖ⴕߔࠆ㗔ၞ߇ ሽߔࠆߚߢࠆ㧚 (4) ᱜ⩄㔚ߩ႐ว㧘࠻ࠥߩࡇ࠶࠴߇ᐢᣇ߇㧘 ࠝ࠱ࡦ ⊒↢㊂߇ዊߐߊ㧘߆ߟ㓸Ⴒല₸߇㜞㧚 (5) ࡇ࠶࠴4mm ߩ႐วߦ߅ߡߪ㧘 ᱜ⩄㔚ߩᣇ߇⽶⩄ 㔚ࠃࠅ߽ࠝ࠱ࡦ⊒↢㊂߇Ⴧᄢߒߚ㧚ᱜ⩄㔚ߦ߅ߡ㧘 ߎߩ᧦ઙߢࡇࠢ㔚ᵹߩᄢ߈ߥࠬ࠻ࡑ߇⊒↢ ߒߚߚߣ⠨߃ࠄࠇࠆ㧚 ᰷Ꮊߢߪ㧘᷷ᥦൻߩᛥߦኻߔࠆേ߈߇ᒝൻߐࠇߟߟ ࠆ㧚ᓟߪ㧘ࠝ࠱ࡦ⊒↢ࠍᦝߦᛥߢ߈ࠆ㔚᳇㓸Ⴒᛛⴚࠍ ត᳞ߔࠆߣߣ߽ߦ㧘ᶖ⾌㔚ജߩዋߥ㔚᳇㓸Ⴒᛛⴚߦߟߡ ߽ᬌ⸛ࠍㅴࠆ੍ቯߢࠆ㧚 ෳ⠨ᢥ₂ 1) ᳓㊁ ᓆ㧦2007 ᐕᐲ╙৻࿁㕒㔚᳇ቇળ⎇ⓥળ੍Ⓜ㓸㧘p 38-82㧘㕒㔚᳇ቇળ (2007) 2) 㕒㔚᳇ቇળ㧦ᣂ 㕒㔚᳇ࡂࡦ࠼ࡉ࠶ࠢ㧘ࠝࡓ␠(1998) 3) ฎᯅᜏ 㧦㕒㔚᳇ቇળ㧘30, 3 (2006) 146 4) ᩉਅᄢ᮸㧦㔚᳇ቇળࡊ࠭ࡑ⎇ⓥળ⾗ᢱ PST-06-35(2006) p1 5) ਃᅢᙗ㧦㕒㔚᳇ቇળ㧘10, 6 (1986) 552 6) ਃᅢᙗ㧦㕒㔚᳇ቇળ㧘12, 2 (1988) 129 7) ਃᅢᙗ㧦㕒㔚᳇ቇળ㧘1, 1 (1977) 52 8) ਃᅢᙗ㧦ᣣᧄ‛ℂቇળ㧘30, 8 (1975) 591 9) L.B.Loeb㧦 Electrical Coronas㧘University of California
Press (1965) 10) ਃᅢᙗ㧦᧚ᢱ⑼ቇ㧘8, 1(March 1971) 33 11) ਃᅢᙗ㧦㕒㔚᳇ቇળ㧘10, 6 (1986) 543 12) ਃᅢᙗ㧦㕒㔚᳇ቇળ㧘12, 1 (1988) 54 0 20 40 60 80 100 㽲 㽳 㽴 㽵 㽶 㽷 㽸 C ol le ct io n Ef fic ie nc y[ %
] Power Consumption per unit gas flow rate: 50[W/(m3/s)]
0 20 40 60 80 100 㽲 㽳 㽴 㽵 㽶 㽷 㽸 C ol le ct io n Ef fic ie nc y[ %
] Power Consumption per unit gas flow rate: 50[W/(m3/s)]
Case
(a)Negative
Case
(b)Positive
0 20 40 60 80 100 㽲 㽳 㽴 㽵 㽶 㽷 㽸 C ol le ct io n Ef fic ie nc y[ %] Power Consumption per unit gas flow rate: 50[W/(m3/s)]
0 20 40 60 80 100 㽲 㽳 㽴 㽵 㽶 㽷 㽸 C ol le ct io n Ef fic ie nc y[ %
] Power Consumption per unit gas flow rate: 50[W/(m3/s)]
