Qhov sib txawv tseem ceeb ntawm qhov taw tes taw qhia thiab qhov kub kub yog lub ntsiab lus flash point yog siv rau cov kua tsis hloov pauv, thaum lub sij hawm boiling point tuaj yeem siv rau cov kua.
Flashpoint thiab boiling point yog ob nqe lus uas peb siv txog cov kua hauv lub xeev ntawm cov tshuaj. Flashpoint tshwj xeeb yog siv rau cov kua dej tsis haum vim nws yog qhov kub qis tshaj plaws uas cov vapor ntawm cov kua tsis hloov pauv tuaj yeem raug hluav taws kub. Ntawm qhov tod tes, qhov boiling point yog qhov kub ntawm qhov vapor siab ntawm cov kua sib npaug rau sab nraud siab nyob ib puag ncig cov kua. Txhua cov kua muaj lub boiling point, tab sis tsuas yog cov kua volatile muaj ib tug flash point.
Flash Point yog dab tsi?
Flash point yog qhov ntsuas kub qis tshaj plaws uas vapor ntawm cov khoom yuav ignite thaum muab qhov hluav taws kub. Peb feem ntau tsis meej pem nrog hluav taws kub taw tes thiab flash point, xav tias ob qho tib si tib yam. Tab sis, qhov hluav taws kub muab qhov kub qis tshaj plaws uas cov vapor ntawm cov khoom tuaj yeem ua kom kub hnyiab tau thaum peb tshem tawm qhov hluav taws kub, uas txawv kiag li ntawm lub ntsiab lus ntawm flash point.
Daim duab 01: Flaming Cocktails nrog lub teeb nyem qis dua chav ntsuas kub
Thaum xav txog qhov hluav taws kub ntawm vapor, ntawm qhov chaw taws teeb, muaj vapor txaus los ua kom muaj hluav taws kub thaum peb muab qhov hluav taws kub. Cov kua dej volatile muaj qhov tshwj xeeb ntawm cov nplaim hluav taws kub, uas yog qhov tsim nyog rau kev txhawb nqa kev sib txuas hauv huab cua.
Yog peb ntsuas qhov taw tes ntawm cov khoom, muaj ob txoj hauv kev: qhib khob ntsuas thiab ntsuas khob kaw. Tsis tas li ntawd, cov txheej txheem ntawm kev txiav txim siab lub teeb nyem tau teev nyob rau hauv ntau tus qauv.
Dab tsi yog Boiling Point?
Boiling point yog qhov kub ntawm qhov vapor siab ntawm cov kua ua rau sib npaug rau sab nraud siab nyob ib puag ncig cov kua. Yog li ntawd, lub boiling point nyob ntawm lub atmospheric siab. Ntawm no, peb tuaj yeem pom qhov kub siab dua ntawm qhov siab dua sab nraud. Feem ntau, dej boils ntawm 1000C. Txij li thaum lub atmospheric siab qis dua ntawm qhov siab dua, dej yuav boil ntawm 80 0 C - 90 0 C. Qhov no yuav ua rau cov zaub mov tsis qab.
Daim duab 02: Dej Boiling
Cov kua dej npau npau tshwm sim thaum qhov kub ntawm cov kua ntau tshaj nws qhov kub thiab txias ntawm qhov sib thooj saturation siab. Qhov ntsuas kub saturation yog qhov ntsuas kub sib haum rau lub zog thermal siab tshaj plaws uas cov kua tuaj yeem tuav tsis tau hloov nws lub xeev mus rau vapor ntawm lub siab muab. Qhov kub thiab txias saturation kuj sib npaug rau lub boiling point ntawm cov kua. Boiling tshwm sim thaum lub thermal zog ntawm cov kua yog txaus los rhuav tshem cov intermolecular bonds. Lub boiling point yog qhov kub thiab txias ntawm atmospheric siab. Lub boiling point tsuas yog nyob nruab nrab ntawm qhov triple point thiab qhov tseem ceeb ntawm cov kua.
Qhov txawv ntawm Flash Point thiab Boiling Point yog dab tsi?
Flash point yog qhov ntsuas kub qis tshaj plaws uas vapor ntawm cov khoom yuav ignite thaum muab qhov hluav taws kub. Boiling point yog qhov kub ntawm qhov vapor siab ntawm cov kua sib npaug rau sab nraud siab nyob ib puag ncig cov kua. Yog li, qhov sib txawv tseem ceeb ntawm lub teeb nyem thiab qhov kub kub yog tias txhua cov kua muaj qhov kub hnyiab, tab sis tsuas yog cov kua tsis hloov pauv tau muaj lub teeb nyem.
Ntxiv mus, ntawm qhov taw tes ntawm cov kua, peb tuaj yeem soj ntsuam qhov hluav taws kub saum cov kua thaum lub sijhawm boiling, peb tuaj yeem soj ntsuam qhov tsim ntawm npuas hauv cov kua. Li no, qhov no yog qhov sib txawv tseem ceeb ntawm flash point thiab boiling point. Yog hais tias peb saib lawv cov mechanisms, ignition ntawm flammable vapor tshwm sim nyob rau hauv lub xub ntiag ntawm ib tug ignition qhov chaw ntawm flash point, thaum muaj txaus vapor rau induce ignition. Txawm li cas los xij, ntawm qhov kub kub, qhov vapor siab ntawm cov kua yuav sib npaug rau sab nraud siab nyob ib puag ncig cov kua.
Summary – Flash Point vs Boiling Point
Flash point thiab boiling point muaj ob peb qhov sib txawv tseem ceeb ntawm lawv. Qhov sib txawv tseem ceeb ntawm flash point thiab boiling point yog tias lub sij hawm flash point yog siv rau cov kua volatile, whereas lub sij hawm boiling point yuav siv tau rau tej kua.
