Mobile QR Code QR CODE : Korean Journal of Air-Conditioning and Refrigeration Engineering

  1. ์„ฑ๊ท ๊ด€๋Œ€ํ•™๊ต ๊ธฐ๊ณ„๊ณตํ•™๋ถ€ ๋ฐ•์‚ฌ๊ณผ์ • (Ph.D. Student, School of Mechanical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, 16419, Korea)
  2. (์ฃผ)์—์–ด๋žฉ ์—ฐ๊ตฌ์› (Researcher, AIRLAB Inc., Building B, Room 1210, 43-22 Cheomdan-Gwagiro 208beon-gil, Buk-gu, Gwangju, Korea)
  3. ์„ฑ๊ท ๊ด€๋Œ€ํ•™๊ต ๊ธฐ๊ณ„๊ณตํ•™๋ถ€ ์„์‚ฌ๊ณผ์ • (Masterโ€™s Student, School of Mechanical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, 16419, Korea)
  4. (์ฃผ)์—์–ด๋žฉ ๋Œ€ํ‘œ, (CEO, AIRLAB Inc., Building B, Room 1210, 43-22 Cheomdan-Gwagiro 208beon-gil, Buk-gu, Gwangju, Korea)
  5. ์„ฑ๊ท ๊ด€๋Œ€ํ•™๊ต ๊ธฐ๊ณ„๊ณตํ•™๋ถ€/๋‚˜๋…ธ๊ณผํ•™๊ธฐ์ˆ ํ•™๊ณผ ๊ต์ˆ˜ (Professor, School of Mechanical Engineering / SKKU Advanced of Institute of Nanotechnology(SAINT), Sungkyunkwan University, 2066 Seobu-Ro, Jangan-Gu, Suwon-si, Korea)



๊ณต๊ธฐ์ฒญ์ •๊ธฐ, ์ด์‚ฐํ™”ํƒ„์†Œ, ๊ต์‹ค, ๋ฏธ์„ธ๋จผ์ง€, ํ™˜๊ธฐ์žฅ์น˜
Air purifier, Carbon dioxide, Classroom, Particulate matter, Ventilation device

๊ธฐํ˜ธ์„ค๋ช…

$CADR$ ๏ผš Clean Air Delivery Rate(์ฒญ์ •ํ™”๋Šฅ๋ ฅ), ๊ณต๊ธฐ์ •ํ™”์žฅ์น˜์˜ ์„ฑ๋Šฅ์„ ๋‚˜ํƒ€๋‚ด๋Š” ์ง€ํ‘œ, ์žฅ์น˜๊ฐ€ ์‹œ๊ฐ„๋‹น ์ œ๊ฑฐํ•  ์ˆ˜ ์žˆ๋Š” ์˜ค์—ผ๋ฌผ์งˆ์˜ ๋ถ€ํ”ผ [mยณ/h]
$V$ ๏ผš ์ธก์ • ๊ณต๊ฐ„์˜ ๋ถ€ํ”ผ [mยณ]
$C(t)$ ๏ผš ์‹œ๊ฐ„ t์—์„œ์˜ ๋†๋„ [ยตg/mยณ]
$t$ ๏ผš ๊ณต๊ธฐ์ •ํ™”์žฅ์น˜๊ฐ€ ์ž‘๋™ํ•œ ์‹œ๊ฐ„ [s]
$C_{0}$ ๏ผš ๊ณต๊ธฐ์ •ํ™”์žฅ์น˜ ์ž‘๋™ ์ด์ „ ๋†๋„ [ยตg/mยณ]
$PCH$ ๏ผš ๊ณต๊ฐ„ ๋‚ด ์‹œ๊ฐ„๋‹น ๊ณต๊ธฐ์ •ํ™” ์ฃผ๊ธฐ [1/h]

1. ์„œ ๋ก 

ํ•™๊ต ๊ต์‹ค ๋‚ด๋ถ€์˜ ๊ณต๊ธฐ์งˆ์€ ํ•™์ƒ๋“ค๊ณผ ๊ต์‚ฌ๋“ค์˜ ๊ฑด๊ฐ•๊ณผ ํ•™์Šต ํ™˜๊ฒฝ์— ์ง์ ‘์ ์œผ๋กœ ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ์ค‘์š”ํ•œ ์š”์†Œ ์ค‘ ํ•˜๋‚˜์ด๋‹ค. WHO์— ์˜ํ•˜๋ฉด ์‹ค๋‚ด ๊ณต๊ธฐ์˜ค์—ผ์— ์˜ํ•œ ๊ฑด๊ฐ•์˜ ์œ„ํ—˜์„ฑ์ด ์‹ค์™ธ ๋Œ€๋น„ 5๋ฐฐ ์ด์ƒ ๋†’์€ ๊ฒƒ์œผ๋กœ ๋ณด๊ณ ๋˜์—ˆ๋‹ค. ๊ทธ ์™ธ ๋งŽ์€ ์—ฐ๊ตฌ์—์„œ ํ•™๊ต ๊ต์‹ค ๋‚ด ๋ฏธ์„ธ๋จผ์ง€์™€ ์ด์‚ฐํ™”ํƒ„์†Œ ๋†๋„์˜ ์ฆ๊ฐ€๊ฐ€ ๋ฏธ์„ธ๋จผ์ง€ ์ทจ์•ฝ๊ณ„์ธต์ธ ์„ฑ์žฅ๊ธฐ ํ•™์ƒ๋“ค์˜ ๊ฑด๊ฐ•๊ณผ ํ•™์Šต ๋Šฅ๋ ฅ์— ๋ถ€์ •์ ์ธ ์˜ํ–ฅ์„ ๋ฏธ์น˜๊ณ  ์žˆ์Œ์ด ๋ฐํ˜€์กŒ๋‹ค.(1,2)

๋ฏธ์„ธ๋จผ์ง€๋Š” ๋Œ€๊ธฐ ์ค‘ ๋ถ€์œ ํ•˜๋Š” ์ž…์ž๋กœ, ์ผ๋ถ€๋Š” ์‹ค๋‚ด์—์„œ ๋ฐœ์ƒํ•  ์ˆ˜๋„ ์žˆ์ง€๋งŒ ์ฃผ๋กœ๋Š” ์‹ค์™ธ์—์„œ ์ฐฝ๋ฌธ ๋“ฑ์„ ํ†ตํ•ด ๊ต์‹ค ๋‚ด๋ถ€๋กœ ์œ ์ž…๋œ๋‹ค.(3) ๋ฏธ์„ธ๋จผ์ง€ ๋†๋„๊ฐ€ ๋†’์•„์ง€๋ฉด ํ˜ธํก๊ธฐ ๋ฐ ์•ˆ๊ตฌ ์งˆํ™˜, ์•Œ๋ ˆ๋ฅด๊ธฐ ์ฆ์ƒ ๋“ฑ์œผ๋กœ ์ธํ•œ ์ง‘์ค‘๋ ฅ ์ €ํ•˜ ๋ฐ ํ•™์Šต ์„ฑ๊ณผ ํ•˜๋ฝ ๋“ฑ์˜ ๋ฌธ์ œ๊ฐ€ ๋ฐœ์ƒํ•  ์ˆ˜ ์žˆ๋‹ค. ์ด์‚ฐํ™”ํƒ„์†Œ๋Š” ํ•™๊ต ๊ต์‹ค ๋‚ด ๊ณต๊ธฐ ์ค‘์— ํฌํ•จ๋œ ๊ธฐ์ฒด๋กœ, ์ผ์ • ์ˆ˜์ค€ ์ด์ƒ์˜ ์ด์‚ฐํ™”ํƒ„์†Œ ๋†๋„๋Š” ํ˜ธํก์— ์˜ํ–ฅ์„ ๋ฏธ์ณ ํ•™์ƒ๋“ค์˜ ํ”ผ๋กœ์™€ ๋‘ํ†ต์„ ์œ ๋ฐœํ•  ์ˆ˜ ์žˆ์œผ๋ฉฐ, ํ•™์Šต ๋Šฅ๋ ฅ์„ ๊ฐ์†Œ์‹œํ‚ฌ ์ˆ˜ ์žˆ๋‹ค.(4-6)

์ด๋Ÿฌํ•œ ๋ฌธ์ œ๋ฅผ ๋ฐฉ์ง€ํ•˜๊ธฐ ์œ„ํ•ด ํ•™๊ต ๊ต์‹ค ๋‚ด๋ถ€์— ๋ฏธ์„ธ๋จผ์ง€์™€ ์ด์‚ฐํ™”ํƒ„์†Œ๋Ÿ‰ ์ œ์–ด๋ฅผ ์œ„ํ•œ ๊ณต๊ธฐ์ •ํ™”์žฅ์น˜ (๊ณต๊ธฐ์ฒญ์ •๊ธฐ ๋ฐ ํ™˜๊ธฐ์žฅ์น˜)๋ฅผ ๋„์ž…ํ•˜๋Š” ๊ฒƒ์ด ์˜๋ฌดํ™”๋˜๊ณ  ์žˆ๋‹ค.(7) ์ด๋Ÿฌํ•œ ๊ณต๊ธฐ์ •ํ™” ์žฅ์น˜๋“ค์€ ์šด์ „ ๋ฐฉ๋ฒ•์— ๋”ฐ๋ผ ๋‚ด๋ถ€ ๊ณต๊ธฐ์งˆ ์ œ์–ด ์„ฑ๋Šฅ์— ํ™•์—ฐํ•œ ์ฐจ์ด๊ฐ€ ์กด์žฌํ•˜๊ธฐ ๋•Œ๋ฌธ์—(8), ์„ค์น˜ ์œ„์น˜, ์ˆ˜, ๊ณต๊ธฐ ํ† ์ถœ ๋ฐฉํ–ฅ ๋“ฑ์˜ ์˜ํ–ฅ ํ™•์ธ ๋ฐ ์ตœ์ ํ™” ์—ฐ๊ตฌ๊ฐ€ ํ•„์š”ํ•˜๋‹ค.(9-12) ํ•˜์ง€๋งŒ ๋‹ค์–‘ํ•œ ๊ณต๊ธฐ์ •ํ™”์žฅ์น˜์˜ ๋ณตํ•ฉ ์šด์ „ ์‹œ ํšจ๊ณผ์ ์ธ ์šด์˜์„ ์œ„ํ•œ ์—ฐ๊ตฌ ์‚ฌ๋ก€ ๋ฐ ๊ธฐ์ค€ ์ •๋ฆฝ์ด ํ˜„์žฌ๊นŒ์ง€๋Š” ๋ฏธํกํ•œ ์‹ค์ •์ด๋‹ค.

๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ํ•™๊ต ๊ต์‹ค ํ™˜๊ฒฝ ๋‚ด ๊ณต๊ธฐ์ฒญ์ •๊ธฐ์™€ ํ™˜๊ธฐ์žฅ์น˜ 2์ข…๋ฅ˜ ๊ณต๊ธฐ์ •ํ™”์žฅ์น˜์˜ ์„ค์น˜ ๋ฐ ์šด์ „ ์„ฑ๋Šฅ ์‹ค์ฆ์„ ํ†ตํ•˜์—ฌ ๊ฐ ํšจ๊ณผ๋ฅผ ๊ฒ€์ฆํ•˜๊ณ , ํšจ๊ณผ์ ์ธ ์šด์˜ ๋ฐฉ๋ฒ•(์šด์˜ ๋Œ€์ˆ˜, ์„ค์น˜ ์œ„์น˜) ๋„์ถœ์„ ์œ„ํ•œ ์—ฐ๊ตฌ๋ฅผ ์ง„ํ–‰ํ•˜์˜€๋‹ค.

2. ์—ฐ๊ตฌ ๋ฐฉ๋ฒ•

๊ฒฝ๊ธฐ๋„ ์†Œ์žฌ ์ดˆ๋“ฑํ•™๊ต ๊ต์‹ค ํ™˜๊ฒฝ์„ ๋Œ€์ƒ์œผ๋กœ ์—ฐ๊ตฌ๋ฅผ ์ง„ํ–‰ํ•˜์˜€๋‹ค. ํ•™๊ต์˜ ํŠน์ง•์œผ๋กœ๋Š” ๊ทธ ์œ„์น˜๊ฐ€ ์‹œ๋‚ด ๋ฐ ๋ฏธ์„ธ๋จผ์ง€ ์ธก์ •์†Œ์™€ ๋‹ค์†Œ ๊ฑฐ๋ฆฌ๊ฐ€ ์กด์žฌํ•˜๋Š” ์‚ฐ๊ณจ์— ๋‘˜๋Ÿฌ์‹ธ์ธ ์ ์ด์—ˆ๋‹ค. ๊ต์‹ค์˜ ํฌ๊ธฐ๋Š” 2.85(๊ฐ€๋กœ)ร—7.04(์„ธ๋กœ)ร— 8.55(๋†’์ด) = 171.5 ใŽฅ์˜€๊ณ , ๊ตฌํ˜• ์ฐฝํ˜ธ ๋ฐ ๋ชฉ์žฌ ์ถœ์ž…๋ฌธ์œผ๋กœ ๊ตฌ์„ฑ๋˜์—ˆ๋‹ค.

๊ต์‹ค ์žฌ์‹ค์ž์ธ ํ•™์ƒ๋“ค์ด ์กด์žฌํ•˜์ง€ ์•Š๋Š” ์ˆ˜์—… ์ค‘๊ณผ ์ˆ˜์—… ์ดํ›„ ๋นˆ ๊ต์‹ค์„ ๋Œ€์ƒ์œผ๋กœ ์ธก์ •์„ ์ง„ํ–‰ํ•˜์˜€๋‹ค. Fig. 1์€ ์‹คํ—˜์— ์‚ฌ์šฉ๋œ ์žฅ๋น„๋“ค์˜ ์‹ค์ œ ์„ค์น˜ ๋ชจ์Šต์„ ๋‚˜ํƒ€๋‚ธ๋‹ค. Fig. 1(a)๋Š” ์ธก์ • ๋Œ€์ƒ ๊ต์‹ค์˜ ์ „๊ฒฝ์„, Fig. 1(b)๋Š” ๋‚ด๋ถ€์— ํ”„๋ฆฌํ•„ํ„ฐ, ํ™œ์„ฑํƒ„ํ•„ํ„ฐ, ๋ฏธ๋””์›€ํ•„ํ„ฐ, ํ—คํŒŒํ•„ํ„ฐ ๋“ฑ ๋‹ค๋‹จ๊ณ„ ์—ฌ๊ณผ ์‹œ์Šคํ…œ์ด ๊ตฌ์„ฑ๋˜์–ด ์žˆ์–ด ๋ฏธ์„ธ๋จผ์ง€ ๋ฐ ์ด์‚ฐํ™”ํƒ„์†Œ๋ฅผ ๋™์‹œ์— ์ œ๊ฑฐํ•  ์ˆ˜ ์žˆ๋Š” ์Šคํƒ ๋“œํ˜• ํ™˜๊ธฐ์žฅ์น˜๋ฅผ, Fig. 1(c)๋Š” ๋ฏธ์„ธ๋จผ์ง€ ์ œ๊ฑฐ ๋ฐ ํƒˆ์ทจ ๊ธฐ๋Šฅ์„ ๊ฐ–์ถ˜ ๊ณต๊ธฐ์ฒญ์ •๊ธฐ๋ฅผ ๊ฐ๊ฐ ๋ณด์—ฌ์ค€๋‹ค. ํ’๋Ÿ‰๊ณ„(TAB Master mini Model 6750, Kanomax), ์‹ค๋‚ด/์‹ค์™ธ ์ž…์ž ์ธก์ •๊ธฐ(PI model A and B, Grimm), ์ด์‚ฐํ™”ํƒ„์†Œ ์ธก์ •๊ธฐ(AF-001, AIRLAB)๋ฅผ ํ™œ์šฉํ•˜์—ฌ ํ™˜๊ธฐ์žฅ์น˜์™€ ๊ณต๊ธฐ์ฒญ์ •๊ธฐ์˜ ํ’๋Ÿ‰, ๋ฏธ์„ธ๋จผ์ง€ (PM10, PM2.5) ๋ฐ ์ด์‚ฐํ™”ํƒ„์†Œ ์ œ๊ฑฐ ์„ฑ๋Šฅ์˜ ๋‹ค๋ฐฉ๋ฉด ์‹ค์ฆ ๋ฐ ์šด์˜ ๊ธฐ์ค€ ๋งˆ๋ จ์„ ์œ„ํ•œ ์‹คํ—˜์ด ์ˆ˜ํ–‰๋˜์—ˆ๋‹ค.

Fig. 2๋Š” ๊ฐ ์žฅ์น˜์˜ ์„ค์น˜ ๋Œ€์ˆ˜, ์œ„์น˜ ๋ฐ ํ’๋Ÿ‰์„ ์ œ์–ดํ•˜๋ฉฐ ์ตœ์  ์šด์ „ ์กฐ๊ฑด์„ ๋„์ถœํ•˜๊ธฐ ์œ„ํ•œ ๊ณต๊ธฐ์ฒญ์ •๊ธฐ(A), ํ™˜๊ธฐ์žฅ์น˜(B), ์ž…์ž ์ธก์ •๊ธฐ(C)์˜ ๋ฐฐ์น˜๋ฅผ ๋‚˜ํƒ€๋‚ธ๋‹ค. ๊ณต๊ธฐ์ฒญ์ •๊ธฐ(A)๋Š” ๊ต์‹ค์˜ ๋„ค ๊ตฌ์„(A1, A2, A3, A4)์— ๋ฐฐ์น˜๋˜์—ˆ๋Š”๋ฐ, ์ด๋Š” ๊ณต๊ฐ„ ์ „์ฒด์—์„œ ๊ณ ๋ฅด๊ฒŒ ๊ณต๊ธฐ ์ •ํ™”๋ฅผ ์ˆ˜ํ–‰ํ•˜๊ณ , ๊ณต๊ธฐ ์ˆœํ™˜์˜ ์‚ฌ๊ฐ์ง€๋Œ€๋ฅผ ์ตœ์†Œํ™”ํ•˜๊ธฐ ์œ„ํ•œ ๊ฒƒ์ด๋‹ค. ๊ฐ ์žฅ์น˜์˜ ๊ณต๊ธฐ ํ๋ฆ„ ๋ฐฉํ–ฅ์€ ๋‚ฎ์€ ํ™˜๊ธฐํšŸ์ˆ˜์—์„œ ํšจ๊ณผ์ ์ด๋ผ๊ณ  ๋ณด๊ณ ๋œ(13), ์žฌ์‹ค์ž๋“ค์ธ ํ•™์ƒ๋“ค์ด ์ฃผ๋กœ ์กด์žฌํ•˜๋Š” ๊ต์‹ค ์ค‘์•™ ์ฑ…์ƒ ๋ฐฉํ–ฅ ์ง์ ‘ ์†กํ’์œผ๋กœ, ์ฃผ์š” ๊ณต๊ฐ„์˜ ๊ณต๊ธฐ์งˆ ์ œ์–ด ์„ฑ๋Šฅ์„ ๋†’์ด๊ณ ์ž ํ•˜์˜€๋‹ค. ํ™˜๊ธฐ์žฅ์น˜(B)๋Š” ์™ธ๊ธฐ ์œ ์ž… ๋ฐ ๋ฐฐ์ถœ์„ ํ†ตํ•œ ์›๋ฆฌ์ƒ ๊ต์‹ค ์™ธ๋ฒฝ ๋ฐฉํ–ฅ ์ฐฝ๋ฌธ ๊ทผ์ฒ˜(B1, B2) ๋ชจ์„œ๋ฆฌ ์œ„์น˜์— ์„ค์น˜๋˜์–ด ๊ต์‹ค ๋ณต๋„ ๋ฌธ ๋ฐฉํ–ฅ์œผ๋กœ ๊ณต๊ธฐ๊ฐ€ ํ† ์ถœ๋˜์—ˆ๋‹ค. ๊ณต๊ธฐ์ฒญ์ •๊ธฐ์™€ ํ™˜๊ธฐ์žฅ์น˜์˜ ๋ณตํ•ฉ ์šด์ „ ์ผ€์ด์Šค์—์„ , ๋™์ผ ์œ„์น˜์— ๋‘ ์žฅ์น˜๋ฅผ ๋™์‹œ์— ์„ค์น˜ํ•˜์ง€ ์•Š๊ณ  ๊ฐ๊ธฐ ๋‹ค๋ฅธ ์œ„์น˜์— ์„ค์น˜ํ•˜์˜€๋‹ค. ์ด๋Ÿฌํ•œ ์œ„์น˜ ์„ ์ •์€ ํ™˜๊ธฐ์žฅ์น˜์™€ ๊ณต๊ธฐ์ฒญ์ •๊ธฐ์˜ ๊ฐ ๋‚ด๋ถ€ ๊ณต๊ธฐ์งˆ ์ œ์–ด ์„ฑ๋Šฅ ๋ฐ ํ† ์ถœ ๊ธฐ๋ฅ˜ ๊ฐ„ ์ƒํ˜ธ ์ž‘์šฉ์„ ๋งŒ๋“ค์–ด ๊ณต๊ฐ„ ๋‚ด ์˜ค์—ผ๋ฌผ์งˆ ์ œ๊ฑฐ๋ฅผ ๋”์šฑ ํšจ๊ณผ์ ์œผ๋กœ ์ˆ˜ํ–‰ํ•˜๊ธฐ ์œ„ํ•œ ๊ฒƒ์ด๋‹ค. ๋‘ ์žฅ์น˜์˜ ๊ณต๊ธฐ์งˆ ์ œ์–ด ์„ฑ๋Šฅ ํ‰๊ฐ€๋ฅผ ์œ„ํ•œ ์ž…์ž ์ธก์ •๊ธฐ(C)๋Š” ๊ณต๊ธฐ์งˆ ๋ณ€ํ™”๋ฅผ ์ •ํ™•ํžˆ ์ธก์ •ํ•˜๊ธฐ ์œ„ํ•ด ๊ต์‹ค ์ค‘์•™(C1, C2)๊ณผ ํ›„๋ฉด ๋ฒฝ ๊ทผ์ฒ˜(C3)์— ์„ค์น˜๋˜์—ˆ๋‹ค. ์ค‘์•™(C1, C2)์€ ๊ณต๊ธฐ ํ๋ฆ„์ด ๊ฐ€์žฅ ์ง‘์ค‘๋˜๋Š” ์ง€์ ์œผ๋กœ, ์žฅ์น˜๋“ค์˜ ๊ณต๊ธฐ์งˆ ๊ฐœ์„  ํšจ๊ณผ๋ฅผ ์‹ค์‹œ๊ฐ„์œผ๋กœ ๋ชจ๋‹ˆํ„ฐ๋งํ•  ์ˆ˜ ์žˆ๋Š” ์ตœ์ ์˜ ์œ„์น˜์ด๋‹ค. ํ›„๋ฉด(C3)์€ ์ƒ๋Œ€์ ์œผ๋กœ ์ค‘์‹ฌ ์˜์—ญ์— ๋น„ํ•ด ๊ณต๊ธฐ ์ˆœํ™˜์ด ๋œ ์ด๋ฃจ์–ด์ง€๊ธฐ ์‰ฌ์šด ์‚ฌ๊ฐ์ง€๋Œ€๊ฐ€ ์ƒ๊ธธ ์ˆ˜ ์žˆ๋Š” ์˜์—ญ์œผ๋กœ, ๊ณต๊ฐ„ ๋‚ด ์ •ํ™” ํšจ๊ณผ์˜ ์ „์ฒด ๊ต์‹ค ์˜์—ญ ๋‚ด ๊ท ์ผ์„ฑ์„ ํ‰๊ฐ€ํ•˜๊ธฐ ์œ„ํ•ด ์„ค์ •๋˜์—ˆ๊ณ , ๊ณต๊ธฐ์ฒญ์ •๊ธฐ ๋ฐ ํ™˜๊ธฐ์žฅ์น˜์˜ ๊ฐ ๋ฐฐ์น˜ ์ผ€์ด์Šค๋งˆ๋‹ค ์†กํ’ ๋ฐฉํ–ฅ์˜ ๋ฐ˜๋Œ€ ๋ฐฉํ–ฅ์— ์œ„์น˜ํ•œ ์ง€์ ์— ์ž…์ž ์ธก์ •๊ธฐ๋ฅผ ์„ค์น˜ํ•˜์˜€๋‹ค.

์ด์‚ฐํ™”ํƒ„์†Œ์˜ ๊ฒฝ์šฐ ์šด์ „ 30๋ถ„ ํ›„ ์‹ค๋‚ด ๋†๋„ ๊ฐ์†Œ์œจ์„ ํ™•์ธํ•˜์—ฌ ๋น„๊ตํ•˜์˜€๊ณ , ๋ฏธ์„ธ๋จผ์ง€์˜ ๊ฒฝ์šฐ 20๋ถ„ ํ›„ ์‹ค๋‚ด ๋†๋„ ๊ฐ์†Œ์œจ์„ ๊ณต๊ธฐ์ •ํ™”์žฅ์น˜์˜ ์„ฑ๋Šฅ ์ง€ํ‘œ์ธ ์ฒญ์ •ํ™”๋Šฅ๋ ฅ(Clean air delivey rate, CADR)(14)๊ณผ ์ด๋ฅผ ๊ณต๊ฐ„ ์ฒด์ ์œผ๋กœ ๋‚˜๋ˆˆ ์ž…์ž์ฒญ์ •ํšŸ์ˆ˜(Particle cleaning per hour, PCH)(15)๋กœ ๊ณ„์‚ฐํ•˜์—ฌ ๋น„๊ตํ•˜์˜€๋‹ค. ์ฒญ์ •ํ™”๋Šฅ๋ ฅ(CADR)์€ ์•„๋ž˜ ์‹(1)์— ๋”ฐ๋ผ ๊ณ„์‚ฐ๋˜๋ฉฐ, ์ž…์ž์ฒญ์ •ํšŸ์ˆ˜(PCH)๋Š” ์‹(2)์™€ ๊ฐ™์ด ๊ตฌํ•œ๋‹ค.

(1)
$CADR = -V\times(\ln\dfrac{C(t)}{C_{0}}\times\dfrac{1}{t})$
(2)
$PCH =\dfrac{CADR(\dfrac{m^{3}}{h})}{Space Volume(m^{3})}$

Fig. 1 Classroom photos: (a) a classroom, (b) ventilation device, (c) air purifier.

../../Resources/sarek/KJACR.2025.37.8.363/fig1.png

Fig. 2 Placement of ventilation devices, air purifiers, and particle counters in a classroom.

../../Resources/sarek/KJACR.2025.37.8.363/fig2.png

3. ์—ฐ๊ตฌ ๊ฒฐ๊ณผ ๋ฐ ๊ณ ์ฐฐ

3.1 ๊ต์‹ค ํ™˜๊ธฐ์žฅ์น˜ ์‹ค ์„ฑ๋Šฅ ํ‰๊ฐ€

Table 1์€ ํ•™๊ต ๋‚ด 5๊ฐœ ๊ต์‹ค์— ์„ค์น˜๋œ 10๊ฐœ ํ™˜๊ธฐ์žฅ์น˜์˜ ์ž‘๋™ ๋‹จ์ˆ˜ ๋ณ„ ํ’๋Ÿ‰, ์†Œ๋น„์ „๋ ฅ, ํ•„ํ„ฐ ์—ฌ๊ณผ ํšจ์œจ ์ธก์ • ๊ฒฐ๊ณผ์˜ ํ‰๊ท ๊ฐ’์„ ์ •๋ฆฌํ•œ ํ…Œ์ด๋ธ”์ด๋‹ค. ์ŠคํŽ™ ์„ฑ๋Šฅ(์ตœ๋Œ€ ํ’๋Ÿ‰ ๊ธฐ์ค€ 450 CMH) ๋Œ€๋น„ ์•ฝ 61% ์ˆ˜์ค€ ํฌ๊ฒŒ ๊ฐ์†Œ๋œ ์ธก์ • ํ’๋Ÿ‰ ๊ฐ’์ด, ์†Œ๋น„์ „๋ ฅ์€ ์ŠคํŽ™(์ตœ๋Œ€ ํ’๋Ÿ‰ ๊ธฐ์ค€ 138 W) ๋Œ€๋น„ 4.4% ์ฆ๊ฐ€๋œ ์ „๋ ฅ ๊ฐ’์ด, ํ•„ํ„ฐ ์—ฌ๊ณผ ํšจ์œจ์€ ์ŠคํŽ™(99%) ๋Œ€๋น„ ํ‰๊ท  ์•ฝ 96%๋กœ ๊ฐ์†Œ๋œ ๊ฐ’์ด ํ™•์ธ๋˜์—ˆ๋‹ค. ์ด๋Š” ํ™˜๊ธฐ์žฅ์น˜๋ฅผ ์„ค์น˜ ์šด์˜ ์‹œ, ์‹ค์ œ ํ˜„์žฅ์˜ ํ™˜๊ฒฝ, ์—ฌ๊ฑด๊ณผ ๊ฐ€๋™ ์กฐ๊ฑด ๋“ฑ์œผ๋กœ ์ธํ•ด ๊ณต์ธ์‹œํ—˜๊ธฐ์ค€๊ณผ๋Š” ํ•„์—ฐ์ ์œผ๋กœ ์ฐจ์ด๊ฐ€ ์กด์žฌํ•˜๊ธฐ ๋•Œ๋ฌธ์ด๋‹ค.

Table 1 Evaluation of actual performance of ventilation devices

Operation level

Air flow rate (CMH)

Power consumption (W)

Filtration efficiency (%)

1

127.5

39

95.6

2

149.8

48.1

95.6

3

180

62.8

96.1

4

210.7

82.7

96.1

5

237.7

107.8

96.4

6

275

144.1

96.4

3.2 ๊ณต๊ธฐ์ •ํ™”์žฅ์น˜ ์šด์ „ ์ผ€์ด์Šค ๋ณ„ ์„ฑ๋Šฅ ํ‰๊ฐ€

Table 2, Fig. 3์€ Fig. 2์—์„œ ์„ค๋ช…ํ•œ ๊ณต๊ธฐ์ฒญ์ •๊ธฐ, ํ™˜๊ธฐ์žฅ์น˜์˜ ์„ค์น˜ ๋ฐ ์šด์˜ ์ผ€์ด์Šค ๋ณ„๋กœ ์ธก์ •๋œ ๋ฏธ์„ธ๋จผ์ง€ ๋†๋„ ๋ฐ ์ œ๊ฑฐ์œจ, ๊ทธ๋ฆฌ๊ณ  ์™ธ๊ธฐ ๋†๋„ ๋Œ€๋น„ ๊ต์‹ค ๋‚ด๋ถ€ ๋†๋„์˜ ๋น„๋ฅผ ๋‚˜ํƒ€๋‚ธ๋‹ค. ์ผ€์ด์Šค ๋ณ„ ๊ณต๊ธฐ์ •ํ™”์žฅ์น˜ ์šด์ „ ์‹œ์ž‘ ํ›„ 30๋ถ„ ํ›„ ์ธก์ •๋œ ๊ฐ’ ๊ธฐ์ค€, ๊ณต๊ธฐ์ฒญ์ •๊ธฐ๊ฐ€ ํฌํ•จ๋œ ์šด์ „ ์ผ€์ด์Šค๋“ค์˜ ๊ฒฝ์šฐ ํ•™์ƒ๋“ค์˜ ์žฌ์‹ค ์œ ๋ฌด์— ๊ด€๊ณ„์—†์ด ์„ธ๊ณ„๋ณด๊ฑด๊ธฐ๊ตฌ(WHO) ๊ฑด๊ฐ• ๋†๋„ ๊ธฐ์ค€ 10 ใŽ/ใŽฅ ์ดํ•˜ ์ˆ˜์ค€์ด ๋‹ฌ์„ฑ๋˜์—ˆ๊ณ , ๊ณต๊ธฐ์ฒญ์ •๊ธฐ ์—†์ด ํ™˜๊ธฐ์žฅ์น˜๋งŒ์ด ์šด์ „๋œ ์ผ€์ด์Šค๋“ค์˜ ๊ฒฝ์šฐ ํ‰๊ท  ์•ฝ 16 ใŽ/ใŽฅ ์ˆ˜์ค€์œผ๋กœ ๊ฑด๊ฐ• ๋†๋„ ๊ธฐ์ค€์ด ๋‹ฌ์„ฑ๋˜์ง€ ์•Š์Œ์„ ํ™•์ธํ•˜์˜€๋‹ค. ๋˜ํ•œ ๊ฐ™์€ ํ’๋Ÿ‰์œผ๋กœ ๋‘ ๋Œ€๋ฅผ ๋™์‹œ ์šด์ „ ์‹œ ๊ณต๊ธฐ์ฒญ์ •๊ธฐ์˜ ๊ฒฝ์šฐ ํ•œ ๋Œ€์˜ ์šด์ „ ์‹œ๋ณด๋‹ค ๊ณต๊ธฐ์ •ํ™” ์„ฑ๋Šฅ์ด ์•ฝ ๋‘ ๋ฐฐ ์ˆ˜์ค€์œผ๋กœ ์ฆ๊ฐ€ํ•จ์— ๋น„ํ•ด, ํ™˜๊ธฐ์žฅ์น˜์˜ ๊ฒฝ์šฐ ๊ณต๊ธฐ์ •ํ™” ์„ฑ๋Šฅ์˜ ์ฆ๊ฐ€๊ฐ€ ํฌ์ง€ ์•Š์€ ๊ฒฐ๊ณผ๊ฐ€ ํ™•์ธ๋˜์—ˆ๋‹ค.

์ธก์ • ์‹คํ—˜ ๊ฒฐ๊ณผ์˜ ์›์ธ์œผ๋กœ๋Š” ๊ณต๊ธฐ์ฒญ์ •๊ธฐ์˜ ๊ฒฝ์šฐ ๊ธฐ๋ณธ์ ์œผ๋กœ ๋” ๋†’์€ ์—ฌ๊ณผ ์„ฑ๋Šฅ์„ ๊ฐ€์ง„ ํ•„ํ„ฐ๊ฐ€ ์‚ฌ์šฉ๋˜๊ณ  ์‹ค๋‚ด์—์„œ ์žฌ์ˆœํ™˜ํ•˜๋Š” ๊ณต๊ธฐ ์ค‘ ๋ฏธ์„ธ๋จผ์ง€๋ฅผ ์ง€์†์ ์œผ๋กœ ์ œ๊ฑฐํ•˜์ง€๋งŒ, ํ™˜๊ธฐ์žฅ์น˜์˜ ๊ฒฝ์šฐ ์™ธ๊ธฐ๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ์‹ค๋‚ด์™ธ ๊ณต๊ธฐ๋ฅผ ๊ตํ™˜ํ•˜๋Š” ๋ฐฉ์‹์œผ๋กœ ์ž‘๋™ํ•˜๊ธฐ ๋•Œ๋ฌธ์— ์™ธ๊ธฐ์˜ ์˜ค์—ผ๋„์— ์˜ํ–ฅ์„ ๋ฐ›๊ณ  ์ ์ • ํ™˜๊ธฐ๋Ÿ‰ ์ด์ƒ ์กฐ๊ฑด์—์„œ๋Š” ๊ต์‹ค ๋‚ด๋ถ€ ๊ณต๊ธฐ์ •ํ™” ์„ฑ๋Šฅ์ด ๊ฐ์†Œ๋  ์ˆ˜ ์žˆ๋‹ค. ๋˜ํ•œ ์žฅ์น˜์˜ ์žฅ๊ธฐ๊ฐ„ ์‚ฌ์šฉ์œผ๋กœ ์ธํ•œ ๋…ธํ›„ํ™” ๋ฐ ์„ฑ๋Šฅ ๊ฐ์†Œ๋กœ ์ธํ•œ ์˜ํ–ฅ๋„ ์›์ธ์ด ๋  ์ˆ˜ ์žˆ๋‹ค.

Table 3์€ ํ™˜๊ธฐ์žฅ์น˜, ๊ณต๊ธฐ์ฒญ์ •๊ธฐ์˜ ์„ค์น˜ ๋Œ€์ˆ˜ ๋ฐ ์„ค์น˜ ์œ„์น˜ ๋ณ„ ์ธก์ •๋œ ๋ฏธ์„ธ๋จผ์ง€ ๋†๋„ ๊ฐ์†Œ์œจ๋กœ ์ฒญ์ •ํ™” ๋Šฅ๋ ฅ์„ ๋ฐ ์ž…์ž ์ฒญ์ •ํšŸ์ˆ˜๋ฅผ ๊ณ„์‚ฐํ•˜์—ฌ ์ •๋ฆฌํ•œ ๊ฒฐ๊ณผ์ด๋‹ค. ๋จผ์ € ์•ž์„  ๊ฒฐ๊ณผ์™€ ๊ฐ™์ด ๊ฒฝ์šฐ ํ™˜๊ธฐ์žฅ์น˜๋ณด๋‹ค ๊ณต๊ธฐ์ฒญ์ •๊ธฐ๊ฐ€ ์‚ฌ์šฉ๋œ ์ผ€์ด์Šค์—์„œ ๋ฏธ์„ธ๋จผ์ง€ ์ฒญ์ •ํ™” ๋Šฅ๋ ฅ์ด ๋‹ค์†Œ ๋†’์€ ๊ฐ’์„ ๋ณด์ด๋Š” ๊ฒƒ์„ ํ™•์ธํ•˜์˜€๋‹ค. ๊ทธ ์›์ธ์œผ๋กœ๋Š” ๋‘ ์ข…๋ฅ˜ ๊ณต๊ธฐ์ •ํ™”์žฅ์น˜์˜ ์›๋ฆฌ ๋ฐ ์‚ฌ์šฉ ๊ธฐ๊ฐ„์— ๋”ฐ๋ฅธ ์„ฑ๋Šฅ ๊ฐ์†Œ๊ฐ€ ์›์ธ์ด ๋  ์ˆ˜ ์žˆ์„ ๊ฒƒ์ด๋‹ค. ๊ฐ ๊ณต๊ธฐ์ •ํ™”์žฅ์น˜์˜ ์„ค์น˜ ๋Œ€์ˆ˜ ๋ฐ ์„ค์น˜ ์œ„์น˜ ์˜ํ–ฅ์˜ ๊ฒฝ์šฐ, ๊ต์‹ค ๋ฐ”๋‹ฅ๋ฉด ๊ธฐ์ค€ ๋Œ€๊ฐ์„  ๋ฐฉํ–ฅ์œผ๋กœ ๋‘ ๊ณต๊ธฐ์ฒญ์ •๊ธฐ๊ฐ€ ์„œ๋กœ ๋งˆ์ฃผ๋ณด๋Š” ๋ฐฉํ–ฅ์œผ๋กœ ์„ค์น˜ํ•˜๋Š” ๊ฒƒ๋ณด๋‹ค ๊ต์‹ค์˜ ๋ฉด์„ ๋”ฐ๋ผ ์˜† ๊ตฌ์„ ์œ„์น˜์— ๋ฐฐ์น˜ํ•˜๋Š” ๊ฒƒ์ด ๋” ์šฐ์ˆ˜ํ•œ ์ฒญ์ •ํ™”๋Šฅ๋ ฅ์„ ๋ณด์ด๋Š” ๊ฒƒ์„ ํ™•์ธํ•˜์˜€๋‹ค. ๋‘ ๊ณต๊ธฐ์ฒญ์ •๊ธฐ์˜ ๋Œ€๊ฐ์„  ๋ฐฉํ–ฅ ๋ฐฐ์น˜๋Š” ๋‘ ํ† ์ถœ ๊ธฐ๋ฅ˜์˜ ์ •๋ฉด์ถฉ๋Œ๋กœ ์ธํ•ด ์ƒํ˜ธ ๊ณต๊ธฐ ํ๋ฆ„์˜ ๊ฐ„์„ญ๊ณผ ์—๋„ˆ์ง€ ์†์‹ค์„ ์•ผ๊ธฐํ•  ์ˆ˜ ์žˆ๋‹ค. ๋”ฐ๋ผ์„œ ์ด๋ฅผ ๋ฐฉ์ง€ํ•จ์œผ๋กœ์จ ๋” ๊ท ์ผํ•œ ๋‚ด๋ถ€ ๊ธฐ๋ฅ˜ ๋ถ„ํฌ ๋ฐ ๊ณต๊ธฐ์งˆ ์ œ์–ด ํšจ๊ณผ๋ฅผ ๋‚ณ์„ ์ˆ˜ ์žˆ๋‹ค. ๊ต์‹ค ์™ธ๋ถ€ ์ฐฝ ์ธก ๋ชจ์„œ๋ฆฌ์—์„œ ๋ฐ˜๋Œ€ํŽธ ๋ฒฝ๋ฉด ๋ฐฉํ–ฅ์œผ๋กœ ๊ณ ์ •๋œ ํ™˜๊ธฐ์žฅ์น˜์™€ ๊ณต๊ธฐ์ฒญ์ •๊ธฐ๋ฅผ ๋™์‹œ์— ์šด์ „ํ•  ์‹œ์—๋Š” ๋Œ€๊ฐ ๋ฐฉํ–ฅ์— ๊ณต๊ธฐ์ฒญ์ •๊ธฐ๋ฅผ ์„ค์น˜ํ•  ๋•Œ ๋ฏธ์„ธํ•œ ์„ฑ๋Šฅ ํ–ฅ์ƒ ํšจ๊ณผ๊ฐ€ ํ™•์ธ๋˜์—ˆ๋‹ค. ์ด๋Š” ๋งˆ์ฐฌ๊ฐ€์ง€๋กœ ๋‹ค๋ฅธ ๋ชจ์„œ๋ฆฌ ์˜์—ญ ๋ฐฐ์น˜ ๋Œ€๋น„ ๋‘ ํ† ์ถœ ๊ธฐ๋ฅ˜์˜ ์ƒํ˜ธ ๊ฐ„์„ญ ์ตœ์†Œํ™” ๋ฐ ์ „์ฒด ๊ต์‹ค ์˜์—ญ ์ˆœํ™˜์ด ์›ํ™œํžˆ ์ด๋ฃจ์–ด์กŒ๊ธฐ ๋•Œ๋ฌธ์ผ ๊ฒƒ์ด๋‹ค.

Fig. 4๋Š” ํ™˜๊ธฐ์žฅ์น˜, ๊ณต๊ธฐ์ฒญ์ •๊ธฐ ์šด์ „ ์ผ€์ด์Šค์— ๋”ฐ๋ฅธ ๊ต์‹ค ๋‚ด ์ด์‚ฐํ™”ํƒ„์†Œ๋Ÿ‰ ์ธก์ • ์‹คํ—˜ ๊ฒฐ๊ณผ๋ฅผ ๋‚˜ํƒ€๋‚ด๋Š” ๊ทธ๋ž˜ํ”„์ด๋‹ค. ์žฅ์น˜๋ฅผ ์šด์ „ํ•˜์ง€ ์•Š์„ ์‹œ์—๋„ ์šฐ๋ฆฌ๋‚˜๋ผ ์‹ค๋‚ด ์ด์‚ฐํ™”ํƒ„์†Œ๋Ÿ‰ ์œ„ํ—˜ ๊ธฐ์ค€์น˜(1,000 ppm) ์ดํ•˜๋ฅผ ์ถฉ์กฑํ•˜๋‚˜, ๊ฑด๊ฐ•ํ•œ ํ™˜๊ธฐ ์‹œ์˜ ๊ธฐ์ค€์น˜(450 ppm ์ดํ•˜)๋ฅผ ์ƒํšŒํ•˜์—ฌ ์žฌ์‹ค์ž๊ฐ€ ๋ถˆ์พŒ๊ฐ์„ ๋А๋‚„ ์ˆ˜ ์žˆ๋Š” ์ˆ˜์น˜์— ๊ทผ์ ‘ํ•˜์˜€๋‹ค. ๊ณต๊ธฐ์ฒญ์ •๊ธฐ ์šด์ „ ์‹œ, ์žฅ์น˜ ๋‚ด๋ถ€ ์‹œ์Šคํ…œ ์ค‘ ์ด์‚ฐํ™”ํƒ„์†Œ ์ œ๊ฑฐ ๊ธฐ๋Šฅ์„ ํ•˜๋Š” ์š”์†Œ๊ฐ€ ์—†์–ด ๊ทธ ๊ฐ์†Œ ํšจ๊ณผ๊ฐ€ ์—†์—ˆ๋‹ค. ํ™˜๊ธฐ์žฅ์น˜์˜ ๊ฒฝ์šฐ ๋‚ด๋ถ€ ์‹œ์Šคํ…œ ์ค‘ ํ™œ์„ฑํƒ„ ํ•„ํ„ฐ์˜ ์ž‘์šฉ์œผ๋กœ ์ธํ•œ ์ด์‚ฐํ™”ํƒ„์†Œ ์ œ๊ฑฐ ์„ฑ๋Šฅ์ด ํ™•์ธ๋˜์—ˆ๊ณ , ํ’๋Ÿ‰ ๋ฐ ์šด์ „ ๋Œ€์ˆ˜์— ๋”ฐ๋ผ ๊ทธ ์„ฑ๋Šฅ์ด ๋ณ€ํ™”ํ•˜์˜€๋‹ค. ์ธก์ • ๊ฒฐ๊ณผ ์ค‘ ํŠน์ด์‚ฌํ•ญ์€ ์„ค์น˜ ๋Œ€์ˆ˜๊ฐ€ ๋‘ ๋Œ€๋กœ ๋Š˜์–ด๋‚จ์— ๋”ฐ๋ผ ๊ทธ ์ด์‚ฐํ™”ํƒ„์†Œ ์ œ๊ฑฐ ์„ฑ๋Šฅ์ด ๋น„๋ก€ํ•˜์—ฌ ์ฆ๊ฐ€ํ•˜์ง€ ์•Š์•˜๋‹ค. ์ด๋Š” ๋ฏธ์„ธ๋จผ์ง€ ์ธก์ • ๊ฒฐ๊ณผ์™€ ๊ฐ™์ด, ์„ค์น˜ ์œ„์น˜์— ๋”ฐ๋ฅธ ์˜ํ–ฅ์ด ์กด์žฌํ•˜๊ณ  ์žฅ์น˜์˜ ๋ณตํ•ฉ ์šด์ „ ์‹œ ๊ต์‹ค ๋‚ด ๋ฐœ๋‹ฌ ๊ธฐ๋ฅ˜์˜ ์ƒํ˜ธ ์˜ํ–ฅ์œผ๋กœ ์ธํ•ด ๋ณต์žกํ•˜๊ณ  ๋ถˆ๊ท ์ผํ•œ ๊ธฐ๋ฅ˜๋ฅผ ํ˜•์„ฑํ•˜๊ธฐ ๋•Œ๋ฌธ์ผ ๊ฒƒ์ด๋‹ค.

Fig. 3 Graph of initial and final PM2.5, PM10 concentrations by case.

../../Resources/sarek/KJACR.2025.37.8.363/fig3.png

Fig. 4 Graph of carbon dioxide removal performances by case.

../../Resources/sarek/KJACR.2025.37.8.363/fig4.png

Table 2 PM2.5, PM10 reduction rate and ratio of inside and outside by case

Case

Presence of

students

PM10

Reduction rate

PM2.5

Reduction rate

PM10

In and out ratio

PM2.5

In and out ratio

1 Ventilation device

(3 Level discharge)

O

38.9%

35.1%

1.04

1.10

X

72.2%

45.8%

0.63

1.08

2 Ventilation devices

(3 Level discharge)

O

-112.6%

-6.3%

1.89

1.20

X

61.7%

59.2%

0.84

0.50

1 Ventilation device

(Max level discharge)

O

65.2%

55.7%

0.36

0.65

X

76.7%

60.7%

0.32

0.51

2 Ventilation devices

(Max level discharge)

X

76.1%

74.6%

0.99

0.67

1 Air purifier

(3 Level discharge)

O

-24.6%

28.9%

1.34

0.57

1 Air purifier

(Max level discharge)

X

82.1%

56.8%

0.26

0.34

2 Air purifiers

(2 Level discharge)

O

78.0%

81.3%

0.57

0.30

1 Air purifier

(2 Level discharge)

+ 1 Ventilation device

(3 Level discharge)

X

76.5%

51.8%

0.28

0.44

Table 3 Clean air delivery rate(CADR) and Particle cleaning per hour(PCH) by case

Case

Location

Clean air delivery rate (CADR)

(CMM)

Particle cleaning

per hour (PCH)

(1/HR)

1 Ventilation device

Back corner

(window side)

6.2

2.2

1 Air purifier

Back corner

(window side)

14.6

5.1

2 Ventilation devices

Both ends of a long wall

(window side)

13.4

4.7

2 Air purifiers

Diagonally

25.3

8.9

2 Air purifiers

Both ends of a long wall

(window side)

35.3

12.4

Simultaneous

(1 Air purifier + 1 Ventilator)

Diagonally

17.6

6.2

Simultaneous

(1 Air purifier + 1 Ventilator)

Both ends of a long wall

(window side)

17.3

6.0

Simultaneous

(1 Air purifiers + 1 Ventilator

Both ends of a short wall

(window side)

17.2

6.0

Simultaneous

(2 Air purifiers + 2 Ventilators)

Diagonally

35.6

12.5

4. ๊ฒฐ ๋ก 

ํ•™๊ต ๊ต์‹ค ์‹คํ™˜๊ฒฝ ๊ณต๊ธฐ์ •ํ™”์žฅ์น˜(ํ™˜๊ธฐ์žฅ์น˜, ๊ณต๊ธฐ์ฒญ์ •๊ธฐ 2์ข…๋ฅ˜) ์‹ค ์„ฑ๋Šฅ์‹œํ—˜ ๋ฐ ๊ธฐ์ค€ ๋งˆ๋ จ ๋ชฉ์  ์—ฐ๊ตฌ๊ฐ€ ์ง„ํ–‰๋˜์—ˆ๋‹ค. ๋ฏธ์„ธ๋จผ์ง€์˜ ๊ฒฝ์šฐ ๊ณต๊ธฐ์ฒญ์ •๊ธฐ, ์ด์‚ฐํ™”ํƒ„์†Œ์˜ ๊ฒฝ์šฐ ํ™˜๊ธฐ์žฅ์น˜๊ฐ€ ๊ทธ ์ œ๊ฑฐ ์„ฑ๋Šฅ์ด ์šฐ์ˆ˜ํ•œ ๊ฒƒ์„ ํ™•์ธํ•˜์˜€๋‹ค. ๋˜ํ•œ ์™ธ๊ธฐ ์ฒญ์ •๋„์— ์˜ํ–ฅ์„ ๋ฐ›๊ณ  ์ ์ • ํ™˜๊ธฐ๋Ÿ‰์ด ์กด์žฌํ•˜์—ฌ ์„ค์น˜ ๋Œ€์ˆ˜ ์ฆ๊ฐ€, ์†กํ’๋Ÿ‰ ์ฆ๊ฐ€์—๋„ ๊ณต๊ธฐ์งˆ ์ œ์–ด ์„ฑ๋Šฅ์ด ๋น„๋ก€ํ•˜์—ฌ ์ฆ๊ฐ€ํ•˜์ง€ ์•Š์•˜๋‹ค. ๊ฐ ๊ณต๊ธฐ์ •ํ™”์žฅ์น˜ ์„ค์น˜ ์œ„์น˜์— ๋”ฐ๋ฅธ ์˜ํ–ฅ์˜ ๊ฒฝ์šฐ, ๊ณต๊ธฐ์ฒญ์ •๊ธฐ๋ฅผ ๊ต์‹ค ๋ฐ”๋‹ฅ๋ฉด ๊ธฐ์ค€ ๋Œ€๊ฐ ๋ฐฉํ–ฅ ๋ ๊ฐ 2๋Œ€ ์„ค์น˜(CADR 25.3 CMM) ๋Œ€๋น„ ๊ต์‹ค์˜ ๋ฉด์„ ๋”ฐ๋ผ ์˜† ๊ตฌ์„ ์œ„์น˜์— ๋ฐฐ์น˜(CADR 35.3 CMM)ํ•˜๋Š” ๊ฒƒ์ด ์ •๋ฉด์ถฉ๋Œ๋กœ ์ธํ•ด ์ƒํ˜ธ ๊ณต๊ธฐ ํ๋ฆ„์˜ ๊ฐ„์„ญ๊ณผ ์—๋„ˆ์ง€ ์†์‹ค์„ ๋ฐฉ์ง€ํ•˜๊ณ  ๊ต์‹ค ๋‚ด ์ „์ฒด ๊ณต๊ฐ„ ๊ธฐ๋ฅ˜ ์ˆœํ™˜์„ ์›ํ™œํ•˜๊ฒŒ ํ•˜์—ฌ ์šฐ์ˆ˜ํ•œ ๋ฏธ์„ธ๋จผ์ง€ ์ œ๊ฑฐ ์„ฑ๋Šฅ์„ ๊ฐ–๋Š” ๊ฒƒ์„ ํ™•์ธํ•˜์˜€๋‹ค. ํ•˜์ง€๋งŒ ์ด๋Š” ํ† ์ถœ ๊ธฐ๋ฅ˜์˜ ๋ฐฉํ–ฅ์— ๋”ฐ๋ผ ๊ฒฐ๊ณผ๊ฐ€ ์ƒ์ดํ•˜๋ฏ€๋กœ, ๋‘ ์žฅ์น˜์˜ ๋ณตํ•ฉ ์šด์ „ ์‹œ ํ† ์ถœ ๋ฐฉํ–ฅ์— ๋”ฐ๋ฅธ ๊ฐ ์„ค์น˜ ์œ„์น˜ ์ตœ์ ํ™”๊ฐ€ ํ•„์š”ํ•œ ๊ฒƒ์„ ์•Œ ์ˆ˜ ์žˆ์—ˆ๋‹ค. ์ด์‚ฐํ™”ํƒ„์†Œ ์ œ๊ฑฐ ํšจ๊ณผ์˜ ๊ฒฝ์šฐ ๋ฏธ์„ธ๋จผ์ง€ ์ €๊ฐ ํšจ๊ณผ์™€ ๋ฐ˜๋Œ€๋กœ ์„ฑ๋Šฅ์ด ๋ฏธ๋น„ํ•œ ๊ณต๊ธฐ์ฒญ์ •๊ธฐ ์šด์ „ ๋Œ€๋น„ ํ™˜๊ธฐ์žฅ์น˜์˜ ์šฐ์ˆ˜ํ•œ ํšจ๊ณผ(๊ฑด๊ฐ• ํ™˜๊ธฐ ๊ธฐ์ค€์ธ 450 ppm์— ๊ทผ์ ‘ํ•œ 527 ppm ์ˆ˜์ค€์œผ๋กœ์˜ ๊ฐ์†Œ ํšจ๊ณผ)๋ฅผ ํ™•์ธํ•˜์˜€๋‹ค. ๋˜ํ•œ ๋ฏธ์„ธ๋จผ์ง€ ๋ฐ ์ด์‚ฐํ™”ํƒ„์†Œ ์ œ๊ฑฐ ํšจ๊ณผ๋ฅผ ๋ชจ๋‘ ๊ณ ๋ คํ•œ ํ™˜๊ธฐ์žฅ์น˜, ๊ณต๊ธฐ์ฒญ์ •๊ธฐ์˜ ๋™์‹œ ์šด์ „ ์‹œ, ๊ณต๊ธฐ ํ† ์ถœ ๋ฐฉํ–ฅ์ด ๊ณ ์ •๋œ ํ™˜๊ธฐ์žฅ์น˜ ๋Œ€๋น„ ์„ค์น˜ ์œ„์น˜ ์„ ์ •์ด ์ž์œ ๋กœ์šด ๊ณต๊ธฐ์ฒญ์ •๊ธฐ๋ฅผ ์ƒํ˜ธ ํ† ์ถœ ๊ธฐ๋ฅ˜๊ฐ€ ์ง์ ‘์ ์œผ๋กœ ์ถฉ๋Œํ•˜์ง€ ์•Š๋Š” ์œ„์น˜์™€ ๋ฐฉํ–ฅ์œผ๋กœ ๊ฐ 1๋Œ€์”ฉ ๋ฐฐ์น˜ ํ›„ ๋™์‹œ ์šด์ „(CADR 17.6 CMM) ํ˜น์€ 2๋Œ€์”ฉ ๋ฐฐ์น˜ ํ›„ ๋™์‹œ ์šด์ „(CADR 35.6 CMM) ์ค‘ ๋น„์šฉ์„ ๊ณ ๋ คํ•œ ์šด์ „ ๋ฐฉ์•ˆ์„ ์„ ํƒํ•˜๋Š” ๊ฒƒ์ด ์ตœ์„ ์˜ ๋ฐฉ์•ˆ์ผ ๊ฒƒ์ด๋‹ค.

๋ณธ ์—ฐ๊ตฌ์˜ ํ•™๊ต ๊ต์‹ค ์‹คํ™˜๊ฒฝ ๋‚ด ํ™˜๊ธฐ์žฅ์น˜ ๋ฐ ๊ณต๊ธฐ์ฒญ์ •๊ธฐ์˜ ๋‹ค๋ฐฉ๋ฉด ์šด์ „ ์„ฑ๋Šฅ ํ‰๊ฐ€ ๊ฒฐ๊ณผ๋Š” ๋Œ€์ƒ ํ™˜๊ฒฝ๊ณผ ์œ ์‚ฌํ•œ ๊ต์‹ค ํ™˜๊ฒฝ์„ ๋Œ€์ƒ์œผ๋กœ, ์šด์ „๋น„์šฉ์„ ๊ณ ๋ คํ•œ ์ตœ์ ์˜ ์„ฑ๋Šฅ์„ ๊ฐ–๋Š” ๊ณต๊ธฐ์ •ํ™”์žฅ์น˜ ์šด์ „ ๋ฐฉ์•ˆ ๋„์ถœ์— ํ™œ์šฉ๋  ์ˆ˜ ์žˆ์„ ๊ฒƒ์ด๋‹ค.

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