Feem ntau cov chav kawm B Cov Hluav Taws Xob B Cov Hluav Taws Xob kom pom tseeb rau "Pom tseeb"} Kuv tsis muaj qhov kub thiab txias} Cov teeb meem zais zais feem ntau ua rau cov tsoos ua npuas dej swb. Lub AFFF 3% yog engeted rau phiaj no hauv qab {} {} lub {} lub {} Lub {} Lub cev tsis tshua muaj hluav taws xob, tab sis tsis pom kev kub ntxhov.
1. Cov tsis muaj tseeb: tsim los txo cov kev pheej hmoo zais
Txhua qhov metric ntawm Afff 3% yog cov lus teb rau "cov teeb meem" ntawm cov xwm txheej tshwj xeeb. Ntawm no yog li cas txhua tus qauv chaw nyob zais kev pheej hmoo:
| Qauv Parieter | Afff 3% (-1 degree) | Afff 3% (-16 Qib) | Afff 3% (-35 degree) |
|---|---|---|---|
| Khov taw tes | -1 degree | -16 Qib | -35 Degree |
| Cov nro | 16,2 mn / m (ruaj khov nyob rau hauv impurities) | 17.3 MN / M (Tsawg {-}} kev siab siab {{{Resistant) | 18.7 mn / m (txias - liete sale chaw - tus phooj ywg) |
| Kis cov coefficient | 6.2-6.4 mn / m (nrawm hauv cov chaw kaw nruj) | 3.5-3,8 mn / m (zoo sib xws ntawm 3,000m +) | 4.2-4.3 mn / m (anti - kev ua haujlwm) |
| Kev nthuav dav | 8.3 ± 1 (tsis muaj txhaws) | 6.6 ± 1 (Tsawg - kub siab nyob ruaj khov) | 7.6 ± 1 (Leem 4- Chaw nyab xeeb) |
| VOC cov ntsiab lus | Ultra - qis (<0.1%) | Ultra - qis (<0.1%) | Ultra - qis (<0.1%) |
2. Tshwj xeeb scenario 1: kaw cov chaw (cov chaw nyob hauv av, tank pob tawb tank)
- Zais kev pheej hmoo: Tsis zoo cua (cov chaw mos ua kom zoo nkauj), ua npuas ncauj (wets tsis sib haum (wets tsis zoo
- Zoo tshaj plaws haum: afff 3% (-1 degree)Nws cov ultra - low voc cov ntsiab lus (<0.1%) avoids toxic buildup in closed spaces. In 2024, a Beijing underground garage gasoline spill (100m², no natural ventilation) used this model: air quality tests showed VOC levels 90% below safety limits, so crews didn't need heavy breathing gear. The 6.2–6.4 mN/m spreading coefficient let foam squeeze through narrow gaps between parked cars, covering the spill in 1 minute-traditional foam took 3 minutes and left unprotected spots.The low surface tension (16.2 mN/m) also resists condensation: the garage's humid air didn't water down the foam, and the 2.9-minute 25% drainage time kept it stable until vents could be opened. A similar spill with traditional foam saw 40% foam breakdown due to condensation.
3. Tshwj xeeb cov xwm txheej 2: Altitudes siab (toj siab Roj Depots, Roob Roj Chaw)
- Zais kev pheej hmoo: Cov cua tsis muaj cua (cuam tshuam ua npuas dej (ua npuas ncauj
- Qhov Zoo Tshaj: AFFF 3% (-16 Qib)Cov qauv no nthuav tawm (6.6 ± 1) nyob qis qis txawm tias ntawm 3, 000+ meters (ib txwm muaj cov cheeb tsam). Qinghai (Tuam Tshoj) toj siab Roj depot (nce 3,200M) sim nws thaum lub sij hawm Diesel: Cov npuas dej nthuav dav mus rau 10 ± 1 (dhau los ua npuas dej, tsoo hauv 30 feeb). Lub 3.5-3.8 mn / m kis rau cov tshuaj lom neeg txawm tias yuav tsum tau ua kom muaj cua (los ntawm 5 teev) Txhawm rau txias cov khaub thuas hluav taws-tsoos-tsoos ua npuas dej ntws hauv 1 feeb, xav tau 2 daim ntawv thov.
4. Tshwj xeeb tshaj tawm 3: impurity {{2} laden kua (muaj roj pov tseg, tshuaj kuab tshuaj sib xyaw, tov cov kuab)
- Zais kev pheej hmoo: Cov khoom tsis txaus ntseeg (clog nozzles), tawg ua npuas ncauj (ua npuas ncauj tsis tau muaj tshuaj lom neeg muaj cov tshuaj lom neeg
- Zoo tshaj plaws haum: afff 3% (-1 degree)Nws homogeneous cov mis (tsis muaj kev txiav) thiab anti {{{0} clog tsim kev tsim kho impurities. Ib qho German 机械厂 (tshuab khw) siv nws los txhawm rau txhaws cov chips hluav taws xob (cia li ua npuas ncauj tsis tau txhaws ob zaug, ncua kev ncua sijhawm los ntawm 5 feeb. 16.2 mn / m deg npoo nro txiav los ntawm cov roj porticosity {} {} {} 1} Kev ua npuas dej me me, ua rau muaj kev sib tw me me. Kev daws teeb meem 40m² pov cov roj roj khib nyiab, txo qhov yuav tsum tau yuav tsum tau zoo dua rau hauv chav ua ke hauv pem teb av.
5. Muab cov kev pheej hmoo: tus nqi ntawm "unseen" swb
Tsis quav ntsej cov kev pheej hmoo muab zais yog siv tus nqi - cov tsoos ua npuas dej nyob hauv cov xwm txheej tshwj xeeb ua rau:
- Kaw qhov chaw kaw: $ 20, {{{000+ hauv cov nqi kho mob (los ntawm cov tshuaj lom) + $ 50,000 nyob rau hauv cov cuab yeej cuab tam (hluav taws kub kis thaum khiav tawm).
- Siab loj: $ 30,000 nyob rau hauv lub tais ua npuas dej (re {- daim ntawv thov) + $ 100,000 nyob rau hauv cov roj depot (hluav taws).
- Impurity - laden kua: $ 15,000 rau hauv cov cuab yeej kho (txhaws lub zog) + $ 40,000 nyob rau hauv ntau lawm downtime (khw muag kaw rau kev tu).
Lub AFFF 3% series tshem tawm cov nqi no: Beijing Undergent chav nres tsheb tau txais $ 65,000 tus nqi kho mob thiab puas; Qinghai roj depot zam $ 130,000 hauv cov khib nyiab thiab kho vaj tse; Lub khw muag khoom German siv txiav cov nqi qis dua los ntawm $ 40,000.
Lub AFFF 3% series 'lub zog nyob hauv nws lub peev xwm los saib lwm tus tsis {} zais cov kev pheej hmoo uas tig "chav kawm yooj yim" B Fires mus rau kev puas tsuaj. Los ntawm kev tsim kho cov engmeters los daws cov kev sib tw tsis txaus ntseeg, nws tau muab kev txhim khu kev cai lij choj, tab sis nyob rau hauv qhov kev ntxhov siab, tsis tau paub txog kev nyab xeeb hluav taws xob rau qhov chaw hluav taws kub.
Ua kom pom cov unseen - Afff 3% ntawm cov hluav taws tshwj xeeb, tsis muaj qhov xav tsis thoob.