Niaj hnub no, cov ntaub pua plag tau dav siv los ua cov khoom siv kho kom zoo nkauj hauv tsev kho kom zoo nkauj thiab cov chaw pej xeem. Lawv qhov kev ua tau zoo hluav taws yog cuam tshuam ncaj qha rau kev nyab xeeb ntawm tus kheej thiab kev tiv thaiv vaj tse. Kev nkag siab txog qhov tseem ceeb ntawm kev ntsuas hluav taws xob ntsuas rau cov ntaub pua plag yog qhov tseem ceeb los ua kom cov khoom muaj kev nyab xeeb. Kab lus no yuav piav qhia txog qhov tseem ceeb ntawm kev ntsuas hluav taws xob ntsuas rau cov ntaub pua plag hauv kev nthuav dav, raws li cov qauv kev lag luam sib txawv.
CHF (Critical Heat Flux rau Extinguishment)
Critical Heat Flux to Extinguishment (CHF) yog qhov taw qhia tseem ceeb rau kev ntsuas cov ntaub pua plag lub peev xwm los tiv thaiv kev kub ntxhov. Nws txhais tau tias yog qhov xwm txheej tsawg kawg nkaus ntawm cov cua sov uas cov khoom siv tuaj yeem tiv taus thaum nplaim hluav taws tsis sib kis thiab thaum kawg tawm mus rau hauv qhov kev txiav txim ntawm qhov chaw tshav kub. Nws chav tsev yog kW / m². Tus nqi siab dua, qhov muaj peev xwm tiv taus kev sib txuas txuas ntxiv.
FS (Flame Spread)
Flame Spread (FS) yog hais txog qhov kev ncua deb tshaj plaws uas cov nplaim hluav taws kis tau los ntawm qhov hluav taws kub mus rau thaj tsam ib puag ncig ntawm cov ntaub pua plag raws li cov qauv ntsuas. Nws unit yog mm. Tus nqi me dua qhov kev pheej hmoo ntawm cov nplaim hluav taws sib kis thaum lub sij hawm combustion.
Hlawv Sijhawm
Lub sij hawm kub kub yog lub sij hawm txij li thaum cov ntaub pua plag yog ignited mus rau thaum lub nplaim taws tawm lawm (los yog mus txog rau sab sauv txwv ntawm lub sij hawm xeem). Cov txheej txheem kev lag luam feem ntau xav kom nws tsawg dua lossis sib npaug li 20 vib nas this. Qhov ntsuas no ncaj qha qhia txog cov ntaub pua plag "tus kheej- tua hluav taws" - lub peev xwm tawm mus ntawm nws tus kheej tom qab raug cais tawm ntawm qhov hluav taws kub. Lub sijhawm luv dua, cov khoom siv zoo dua "tus kheej- tua hluav taws".
Haus luam yeeb ntau lawm
Qhov kev sim ntawm tag nrho cov pa luam yeeb yog qhia nyob rau hauv chav tsev ntawm "%·min" (feem pua ·minute). Cov txheej txheem kev lag luam xav kom nws tsawg dua lossis sib npaug li 750% · min. Nws txhais tau tias yog cov khoom ntawm qhov muag pom qhov ntom ntom ntawm cov pa luam yeeb tsim los ntawm cov khoom siv thaum lub sij hawm combustion thiab lub sij hawm, uas ncaj qha cuam tshuam txog tag nrho cov pa luam yeeb tso tawm. Qhov tsawg dua tus nqi, qhov ntau tswj tau qhov concentration thiab ntev ntawm cov pa luam yeeb thaum lub sij hawm combustion, ua rau nws yooj yim dua rau kev khiav.
ASTM E662 Cov pa luam yeeb ntau lawm
ASTM E662 yog ib qho qauv siv thoob ntiaj teb rau kev kuaj cov pa luam yeeb. Nws qhia meej meej txog ob qhov tseem ceeb ntawm qhov ntsuas qhov muag pom qhov muag pom ntawm lub sijhawm tshwj xeeb: pa luam yeeb qhov muag ntom ntom ntawm 1.5 feeb (Ds1.5) thiab haus luam yeeb qhov muag qhov ntom ntom ntawm 4.0 feeb (Ds4.0). Cov kev cai tsim nyog yog Ds1.5 Tsawg dua lossis sib npaug rau 100 thiab Ds4.0 Tsawg dua lossis sib npaug rau 200 raws. Cov pa luam yeeb qhov muag pom tau ncaj qha cuam tshuam cov pa luam yeeb lub teeb- tiv thaiv cov khoom ntiag tug - qhov me dua tus nqi, cov pa luam yeeb thinner thiab qhov pom tau ntau dua.
Burning Cheeb Tsam (ASTM D2859)
Burning charred cheeb tsam yog hais txog qhov sib kis ntawm cov charred ib feem ntawm cov khoom nyob rau hauv lub xeem ncej tom qab combustion. Qhov chaw charred yuav tsum tsis txhob ncua mus rau hauv 25.4mm (1 nti) ntawm ntug ntawm lub qhov ncej. Lub hom phiaj tseem ceeb ntawm qhov ntsuas no yog txhawm rau txwv qhov kev sib kis ntawm thaj chaw charred tom qab combustion, tsis txhob combustion thib ob tshwm sim los ntawm kev sib kis ntxiv ntawm thaj chaw charred, thiab txo qhov kev puas tsuaj ntawm cov ntaub pua plag combustion rau hauv av thiab ib puag ncig cov ntaub ntawv zoo nkauj.
Maximum Damage Radius (Suav Standard)
Qhov kev puas tsuaj ntau tshaj plaws yog qhov taw qhia tseem ceeb rau thaj tsam ntawm cov ntaub pua plag combustion puas tsuaj hauv Suav cov qauv. Nws hais txog lub vojvoog siab tshaj plaws ntawm cov ntaub pua plag qhov chaw puas tom qab combustion, nrog rau qhov yuav tsum tau tsawg dua los yog sib npaug li 75 hli. Qhov ntsuas no ntxiv cov nplaim taws sib kis thiab thaj chaw charred, txwv qhov kev puas tsuaj hauv cheeb tsam uas tshwm sim los ntawm combustion los ntawm "radius" foundations. Tus nqi me dua txhais tau tias qhov kev puas tsuaj hauv cheeb tsam ntawm cov ntaub pua plag tom qab sib dua, thiab cov nqi kho hluav taws xob tom qab - kuj qis dua.
