Qhov sib txawv tseem ceeb ntawm qhov taw tes nyem thiab qhov hluav taws kub yog qhov taw tes taw qhia qhov ntsuas kub qis tshaj plaws thaum qhov hluav taws kub ntawm cov khoom pib thaum qhov hluav taws kub piav qhia qhov kub qis tshaj plaws uas cov roj txuas ntxiv hlawv rau lub sijhawm luv luv lub sij hawm tom qab pib ntawm lub ignition.
Txhua cov kua hluav taws xob muaj lub vapor siab uas nce nrog nws qhov kub thiab txias. Qhov concentration ntawm evaporated kua nyob rau hauv cov huab cua nce nrog ib tug nce nyob rau hauv vapor siab. Cov kua dej sib txawv yuav tsum muaj qhov sib txawv hauv cov huab cua kom txhawb nqa kev sib txuas. Ntawm no, lub flash point ntawm cov kua flammable yog qhov kub qis tshaj plaws uas nws tuaj yeem tsim qhov sib xyaw ua ke hauv huab cua. Txawm li cas los xij, lub vapor nres kom hlawv yog tias peb tshem tawm qhov hluav taws kub. Whereas, qhov hluav taws kub taw tes yog qhov kub ntawm cov vapors ntawm cov kua hluav taws xob txuas ntxiv mus hlawv tom qab raug hluav taws kub txawm tias tom qab peb tshem tawm qhov hluav taws kub. Txawm li cas los xij, ob qho tib si lub teeb nyem thiab qhov hluav taws kub tsis muaj feem cuam tshuam rau qhov kub ntawm qhov hluav taws kub.
Flash Point yog dab tsi?
Flash point yog qhov ntsuas kub qis tshaj plaws uas cov vapors ntawm cov khoom tsis hloov pauv thaum peb muab qhov hluav taws kub. Qhov ntsuas kub no tsis nyob ntawm qhov kub ntawm qhov hluav taws xob ncaj qha. Txawm li cas los xij, feem ntau, qhov kub ntawm qhov hluav taws xob hluav taws xob yog qhov siab dua li qhov flash point. Tsis tas li ntawd, txhua cov kua hluav taws xob muaj lub vapor siab uas nce nrog qhov kub thiab txias. Thaum lub vapor siab nce, qhov concentration ntawm vapor hauv huab cua nce. Cov kua hluav taws xob yuav tsum muaj qee yam ntawm cov pa hauv huab cua kom muaj kev sib txuas hauv huab cua, uas yog tshwj xeeb rau cov kua hluav taws xob (los yog cov kua roj combustible). Li no, lub teeb nyem muab qhov kub qis tshaj plaws uas muaj vapor txaus nyob rau hauv cov huab cua kom induce lub ignition ntawm cov roj.
Daim duab 01: Flaming Cocktail Vapour
Peb tuaj yeem ntsuas lub teeb nyem siv "qhib khob apparatus" lossis "lub khob kaw". Qhov kev ntsuas no tseem ceeb heev hauv kev paub qhov txawv ntawm cov roj hluav taws xob xws li roj av thiab diesel. Tsis tas li ntawd, nws yog ib qho tseem ceeb uas yuav tsum ua kom muaj kev phom sij ntawm cov hluav taws kub. Piv txwv li, yog tias qhov hluav taws xob ntawm cov roj tsawg dua 37.8 ° C, cov roj ntawd yog hluav taws kub. Yog hais tias lub flash point yog siab tshaj qhov kub, ces peb muab cov khoom ua "combustible material".
Piv txwv li, roj av (petrol) yog ib qho tseem ceeb ua roj hauv tsheb. Qhov twg, cov roj no yuav tsum tau ua kom sov siab tshaj nws qhov chaw taws teeb thiab sib xyaw nrog huab cua ua ntej lub txim hluav taws xob ua rau nws hlawv. Yog li ntawd, petrol yuav tsum muaj ib tug tsawg flash point thiab siab auto-ignition kub. Ntawm qhov tod tes, tsis muaj qhov hluav taws xob nyob rau hauv cov ntaub ntawv ntawm diesel. Li no nws yuav tsum muaj lub teeb nyem siab thiab qhov pib qis qis qis.
Dab tsi yog qhov hluav taws kub?
Hluav taws kub ntawm cov roj yog qhov kub qis tshaj plaws uas cov vapor ntawm cov roj tuaj yeem txuas ntxiv kub li tsib vib nas this tom qab qhov hluav taws kub pib. Nws txhais tau tias; Lub sij hawm hluav taws kub taw tes piav qhia tias nws yog qhov ntsuas kub qis tshaj plaws rau cov khoom siv los tuav cov combustion rau lub sijhawm me me tom qab qhov hluav taws kub los ntawm qhov qhib nplaim taws.
Daim duab 02: Daim Ntawv Qhia Txog Hluav Taws Xob ntawm Cov Roj Ua Kua
Feem ntau, qhov hluav taws kub ntawm cov khoom yog li 10 ° C siab tshaj qhov taw tes ntawm tib yam khoom. Peb tuaj yeem ntsuas qhov hluav taws kub ntawm cov khoom siv "qhib khob".
Qhov txawv ntawm Flash Point thiab Hluav Taws Xob yog dab tsi?
Lub teeb nyem thiab qhov hluav taws kub yog ob qho tseem ceeb ntawm cov roj. Cov ntsiab lus no piav qhia txog qhov pib thiab qhov txuas ntxiv ntawm cov roj combustion. Yog li ntawd, qhov sib txawv tseem ceeb ntawm qhov taw tes flash thiab qhov hluav taws kub yog qhov taw tes flash piav qhia qhov kub qis tshaj plaws ntawm qhov hluav taws kub ntawm cov khoom pib thaum qhov hluav taws kub piav qhia qhov kub qis tshaj plaws uas cov roj tseem kub hnyiab rau lub sij hawm luv luv tom qab lub pib ntawm lub ignition. Tsis tas li ntawd, peb tuaj yeem pom qhov sib txawv ntawm qhov chaw flash thiab qhov hluav taws kub raws li lawv qhov tseem ceeb thiab. Qhov ntawd yog; qhov hluav taws kub taw tes yeej ib txwm muaj nqi siab dua qhov flash point. Feem ntau cov hluav taws kub, taw tes yog li 10 degrees siab tshaj qhov flash point ntawm cov kua nplaum.
Summary – Flash Point vs Fire Point
Flash point thiab qhov hluav taws kub yog cov yam ntxwv tseem ceeb rau cov khoom siv hluav taws xob lossis hluav taws kub. Qhov sib txawv tseem ceeb ntawm lub teeb nyem thiab qhov hluav taws kub yog qhov chaw taws teeb piav qhia qhov ntsuas kub qis tshaj plaws uas qhov hluav taws kub ntawm cov khoom pib thaum qhov hluav taws kub piav qhia qhov kub qis tshaj plaws uas cov roj txuas ntxiv hlawv rau lub sijhawm luv luv tom qab pib ntawm qhov hluav taws xob.
