Qhov sib txawv tseem ceeb ntawm kev ua kom tiav thiab tsis tiav yog qhov ua tiav combustion tshwm sim thaum muaj cov pa tsis tu ncua thiab txaus oxygen thaum qhov kev tawg tsis tiav yuav tshwm sim thaum tsis muaj oxygen txaus.
Keeb kwm oxidation cov tshuaj tiv thaiv yog cov tshuaj tiv thaiv uas cov pa oxygen koom nrog. Nyob ntawd, cov pa oxygen ua ke nrog lwm cov molecule, los tsim cov oxide. Hauv cov tshuaj tiv thaiv no, cov pa oxygen txo qis, thiab lwm yam khoom siv oxidation. Yog li hauv paus oxidation cov tshuaj tiv thaiv yog ntxiv oxygen rau lwm yam khoom. Lwm txoj hauv kev los piav txog oxidation yog qhov poob ntawm hydrogen. Muaj qee lub sijhawm uas nws nyuaj los piav txog oxidation li ntxiv oxygen. Muaj ntau hom oxidation cov tshuaj tiv thaiv. Qee qhov tshwm sim hauv ib puag ncig ntuj txhua hnub. Hlawv thiab combustion yog qee qhov oxidizing cov tshuaj tiv thaiv uas tib neeg koom nrog.
Yuav ua li cas thiaj ua tiav?
Combustion lossis cua sov yog cov tshuaj tiv thaiv tshav kub ua los ntawm cov tshuaj tiv thaiv exothermic. Nws yog cov tshuaj tiv thaiv oxidation. Rau qhov kev tshwm sim tshwm sim, nws yuav tsum tau roj thiab oxidant. Cov khoom uas raug combustion yog cov roj. Piv txwv muaj xws li hydrocarbons xws li petrol, diesel, methane, lossis hydrogen gas, thiab lwm yam. Feem ntau, tus neeg sawv cev oxidizing yog oxygen, tab sis qee qhov lwm yam oxidants xws li fluorine tuaj yeem ua cov tshuaj oxidizing.
Daim duab 01: Nplaim taws thaum ua tiav
Hauv cov tshuaj tiv thaiv, cov oxidant oxidizes roj. Yog li qhov no yog oxidation cov tshuaj tiv thaiv. Thaum peb siv hydrocarbon fuels, cov khoom tom qab ua tiav combustion feem ntau yog carbon dioxide thiab dej. Nyob rau hauv tag nrho combustion, ob peb cov khoom tsim, thiab nws muab lub siab tshaj plaws lub zog tso zis uas lub reactant yuav muab tau. Txawm li cas los xij, txhawm rau ua kom tiav combustion tshwm sim, tsis muaj kev txwv thiab tsis tu ncua oxygen mov thiab qhov ntsuas kub zoo yog qhov yuav tsum tau ua. Yog li, kev sib xyaw ua kom tiav tsis yog ib txwm muaj txiaj ntsig zoo.
Yuav ua li cas tsis tiav combustion?
Thaum tsis muaj oxygen txaus, kev sib txuas tsis tiav yuav tshwm sim.
Daim duab 02: Kev puas tsuaj thiab kev ua qias tuaj ntawm qhov tsis tiav combustion
Yog tias qhov hluav taws kub tsis tau tshwm sim tag nrho, carbon monoxide thiab lwm yam khoom tso tawm rau hauv qhov chaw thiab tuaj yeem ua rau muaj kuab paug ntau.
Qhov txawv ntawm qhov ua kom tiav thiab tsis tiav yog dab tsi?
Kev sib xyaw ua tiav yog nyob rau hauv daim ntawv ntawm kev sib txuas uas tshwm sim thaum muaj cov pa oxygen txaus thiab tsis tu ncua. Kev combustion tsis tiav yog hom combustion uas tshwm sim thaum tsis muaj oxygen txaus. Nyob rau hauv tag nrho combustion, ib tug tsawg tus naj npawb ntawm cov khoom tsim thaum nyob rau hauv tsis tiav combustion, tej yam khoom yuav tsim.
Tsis tas li ntawd, yog tias hydrocarbon dhau los ua tiav, nws tsuas yog tsim cov pa roj carbon dioxide thiab dej thaum cov pa roj carbon monoxide thiab cov pa roj carbon monoxide tuaj yeem tsim ua tsis tiav. Nrog rau kev txhawj xeeb txog lub zog tsim los ntawm ob hom kev sib xyaw ua ke, Ua kom tiav combustion ua rau ntau lub zog ntawm qhov tsis sib xws, Tsis tiav combustion ua rau tsawg zog. Ntxiv mus, Ua kom tiav combustion tsis ua rau ib puag ncig muaj kuab paug. Txawm li cas los xij, kev combustion tsis tiav ua rau muaj kuab paug ib puag ncig.
Summary – Ua tiav vs Tsis tiav combustion
Combustion yuav tshwm sim nyob rau hauv ob hom ua tiav thiab tsis tiav combustion. Ob leeg yog cov tshuaj tiv thaiv oxidation. Qhov sib txawv ntawm kev ua kom tiav thiab tsis tiav yog qhov ua tiav combustion tshwm sim thaum muaj cov pa tsis tu ncua thiab txaus oxygen whereas tsis tiav combustion tshwm sim thaum tsis muaj oxygen txaus.
