-Delile
Ngokusho kwe- izimiso zomzimba ze-thermodynamicsKuyaphawuleka ukuthi izinga lokushisa yinto engahlali njalo emizimbeni, kepha kunalokho idluliswa isuka komunye iye komunye: inkomba ihlala ifana, ngoba ukushisa kudlula kusuka ezintweni ezinokushisa okuphezulu kuye kulabo abanaphansi.
Kunezindlela eziningi zezibalo ezihambelana ne-physics kanye ne-chemistry evame ukuchaza lokhu izinqubo zokudlulisa ukushisa, kodwa into eyinhloko ukuthi zenzeka ngaphansi kwezinqubo ezintathu ezihlukene: ukuqhutshwa, ukuhanjiswa kwe-convection nemisebe.
Izibonelo Zokushayela
Kuyini ukushayela?I- ukushayela Kuyinqubo okusakazeka ngayo ukushisa ngenxa yokuxokozela kokushisa kwama-molecule, ngaphandle kokuthi kube khona ukufuduka kwangempela kwawo. Kuyinqubo elula ukuyiqonda futhi ngasikhathi sinye '-ngabonakali ' njengoba kwenzeka kuphela ukudluliswa kokushisa, kungabonakali lutho olubonakalayo.
I- ukushayela Kuyisizathu sokuthi kungani izinto, esikhathini esithe xaxa noma esincane, zigcine zithola ukushisa okufanayo kukho konke ukunwetshwa kwazo. Ezinye izibonelo zokushayela:
- Kanye nezinsimbi zokuphatha amalahle noma ezinye izinto ezingashisa kakhulu. Ukube ubude bayo bebufushane, ukudluliswa kokushisa bekuzoshesha futhi akukho ukuphela okungathintwa.
- Iqhwa esitsheni samanzi ashisayo liyancibilika ngokuqhuba.
- Lapho amanzi ebilisa, ilangabi liqhuba ukushisa esitsheni futhi ngemuva kwesikhathi livumela amanzi ukuthi ashise.
- Ukushisa kwesipuni lapho usifaka esitsheni bese uthela isobho elishisayo ngokweqile kuso.
- Imimese nezimfoloko zisebenzisa isibambo sokhuni ukwephula ukuqhutshwa kokushisa.
Izibonelo zeConvection
Kuyini ukuhanjiswa? I- ukuhanjiswa Kungukudluliswa kokushisa okususelwa ekuhambeni kwangempela kwama-molecule ento: uketshezi olungaba igesi noma uketshezi luyangenelela lapha.
I- ukudlulisa ukushisa okuhambisanayo Ingakhiqizwa kuphela oketshezini lapho ngokunyakaza kwemvelo (uketshezi lukhipha ukushisa kusuka endaweni eshisayo futhi luguqule ukuminyana) noma ukusakazwa okuphoqelelwe (uketshezi ludlula kufeni), izinhlayiya zingahambisa ukuhambisa ukushisa ngaphandle kokuphazamisa ukuqhubeka komzimba umzimba. Lapha uchungechunge lwezibonelo ze-convection:
- Ukudlulisa ukushisa kusuka esitofu.
- Amabhaluni omoya ashisayo, agcinwa emoyeni ngomoya oshisayo. Uma iphola, ibhaluni ngokushesha liqala ukuwa.
- Lapho umusi wamanzi usibekela ingilazi endlini yangasese, ngenxa yethempelesha elishisayo lamanzi lapho ugeza.
- Okomisa izandla noma okomisa izinwele, okudlulisa ukushisa ngokuphoqelelwa kwe-convection.
- Ukudluliswa kokushisa okwenziwe ngumzimba womuntu lapho umuntu enganazi zicathulo.
Bhekafuthi: Izibonelo ze-Thermal Equilibrium
Izibonelo Zemisebe
Iyini imisebe? I- imisebe Kuwukushisa okukhishwa ngumzimba ngenxa yokushisa kwawo, ngenqubo engenakho ukuxhumana phakathi kwemizimba noma uketshezi oluphakathi oluhambisa ukushisa.
I- imisebe ngoba kukhona umzimba oqinile noma oketshezi onamazinga okushisa aphakeme kunenye, kukhona ukudluliswa okusheshayo kokushisa kusuka komunye kuya komunye. Into eyenzekayo ukuthi ukudluliswa kwamagagasi kagesi, avela ngemizimba ekushiseni okuphezulu kune-zero ngokuphelele: ukuphakama kwezinga lokushisa, khona-ke lawo magagasi ayobe ephakeme.
Yilokho okuchaza lokho imisebe kungenzeka kuphela inqobo nje uma imizimba isezingeni lokushisa eliphezulu kakhulu. Nali iqembu lezibonelo lapho kwenzeka khona imisebe:
- Ukudluliswa kwamagagasi kagesi nge-oven microwave.
- Ukushisa okukhishwa yi-radiator.
- Imisebe yelanga ye-ultraviolet, ncamashi inqubo enquma ukushisa komhlaba.
- Ukukhanya okukhishwa yisibani se-incandescent.
- Ukukhishwa kwemisebe ye-gamma yi-nucleus.
Izinqubo zokudlulisa ukushisa ziyakhuphula futhi zinciphise amazinga okushisa emizimbeni ethintekile, kepha futhi ngezikhathi ezithile (njengoba kuboniswe ngeqhwa) zibhekene nezehlakalo izinguquko zesigaba, njengokubila kwamanzi ku- umusi, noma ukuncibilika kwamanzi abe yiqhwa. Ubunjiniyela bugxila emizameni yabo eminingi yokusebenzisa leli thuba lokukhohlisa isimo semizimba ngokudlulisa ukushisa.
Bhekafuthi: Izibonelo Zokushisa Nesimo Sokushisa
