Qhov kev kawm dej khov dej qab dej thiab nws lub luag haujlwm hauv cov twj thauj khoom txias: vim li cas cov dej khov ua kom muaj qhov kub ntxhov tas li
Dej dej khov, nrog rau lub qhov taw tes khov ntawm 0 ° C, yog ib qho ntawm cov neeg ua hauj lwm tshaj plaws thiab dav txias cov neeg sawv cev hauv cov khoom siv txias. Tab sis vim li cas dej khov ua kom muaj qhov kub tsis tu ncua thaum nws melts? Cov ntawv no tshawb txog kev kawm paub tom qab qhov tshwm sim no thiab nws cov ntaub ntawv siv.
1. Nkag siab molecular dynamics thiab thermodynamics
Molecular dynamics (MD)yog cov txheej txheem sib xyaw siv los simulate thiab kwv yees cov lus tsa suab ntawm cov lwg me me. Nws pab hauv kev kawm theem hloov pauv thiab hloov tshav kub los ntawm kev daws cov lus tsa suab Newton qhov sib npaug ntawm cov lus tsa suab.
Molecular thermodynamicsTxuas hniav thermodynamic lub tswv yim thiab molecular physics. Nws piav txog macroscopic tshwm sim zoo li theem hloov chaw thiab thermodynamic effernibrium los ntawm kev sib txuas lus molecular. Cov ntawv thov tseem ceeb suav nrog cov tshuaj tiv thaiv, theem hloov pauv, thiab cov kev daws teeb meem.
2. Tsom tsom iav tsom xam cov dej khov thiab yaj
- Khov kom khov (kua rau khoom):
Raws li cov dej txias, molecular suab qeeb qeeb, ruaj khov hydrogen bonds thiab tsim ib qho kev txiav txim siab hexagonal nyom qauv (dej khov). Cov txheej txheem no cuam tshuam thaum tshav kub latent. - Melting txheej txheem (khoom rau kua):
Raws li cov dej khov melts, cua sov nqus cov kev sib tsoo hydrogen tsis muaj kev nce qib kub. Qhov kev hloov pauv no hloov pauv latent tshav kub, hloov cov dej khov rau hauv dej.
3. Yog vim li cas ICE khov kho qhov kub tsis tu ncua thaum lub sijhawm melting
Ntawm 0 ° C, ntxiv cov cua sov yog siv los rhuav cov hydrogen bonds (latent tshav kub), ntau dua li nce kev ua kom soviction zog. Qhov no yog vim li cas dej nyob ntawm 0 ° C kom txog rau thaum txhua txhua dej khov tau yaj.
Cov Ntsiab Lus Tseem Ceeb:
- Latent kub nqus:Thaum lub sij hawm melting, cua sov so hydrogen bonds es tsis txhob kub.
- Theem Kev Hloov:Qhov ntsuas kub tas li ua kom muaj kev hloov chaw nyob ruaj khov los ntawm cov dej khov ua kua.
4. Cov ntawv thov ntawm qhov kub tsis tu ncua hauv cov dej khov nab kuab
TXIAS SAMPORSION TUBSORS:
ICE ua kom tiav tswj qhov kub thiab txias kev tswj hwm thaum lub sijhawm ris tsho uas lwj thiab cov kws tshuaj. Qhov ntsuas kub tas li thaum lub sijhawm melting pab tswj cov khoom tshiab thiab kev ruaj khov.
Khoom Noj Khoom Haus Khaws Tseg:
Freezers siv Ice los tswj kev ua haujlwm sab hauv. Nyob rau hauv chaw sab nraum zoov, Ice cia zaub mov thiab dej haus txias rau ncua sijhawm.
Siv kev kho mob:
Ice pob tau nqus kub ua tau, muab kev pab zoo rau kev raug mob los ntawm kev tswj hwm qhov kub tsawg.
Cov Kev Ua Si:
ICE yog qhov kev daws teeb meem txias rau kev lom zem thiab kev pw hav zoov, ua kom muaj cov dej qab zib thiab khaub ncaws phem nyob tshiab.
Tag
Cov cuab yeej tshwj xeeb ntawm cov dej khov kom tswj tau qhov kub tsis tu ncua thaum lub sijhawm melting ua lub luag haujlwm tseem ceeb hauv cov ntawv xa khoom txias, kev txuag khoom noj, thiab cov ntawv thov kho mob. Los ntawm nias lub ntsiab cai no, kev lag luam tuaj yeem ua kom ntseeg tau cov kev cai kub tau zoo, txhim kho lub neej zoo thiab txuas tau rau lub neej.
Lub Sijhawm Post: Lub Yim Hli-21-2024