1. Incazelo yokudluliselwa kokushisa ngokuqhutshwa komoya
Uma uhleli esihlalweni sokhuni, ubuso besihlalo sokhuni buyafudumala. Ngokuphambene nalokho, uma uhleli esihlalweni esenziwe ngepulasitiki noma ngensimbi, ubuso besihlalo sensimbi noma sepulasitiki abuzizwa bufudumele ngemva kokuhlala. Kungani ubuso besihlalo sokhuni bufudumala, kanti ubuso besihlalo sensimbi abufudumala? Kungani ukulala phansi okubandayo ngaphandle komatrasi kungabanga ubuhlungu? Wake wagqoka ijakethi elivimbela ukubanda? Kungani amajakethi amaningi avimbela ukubanda enziwe ngoboya? Kusenezinto eziningi ezingacatshangelwa futhi zibuzelwe ngazo ezihlobene nendaba yokudluliselwa kokushisa ngokuqhutshwa komoya.
Uma ingxenye eyodwa yento enokushisa okuphezulu ithintana nento enokushisa okuphansi, amandla asuka entweni enokushisa okuphezulu aye engxenyeni enokushisa okuphansi yento. Ukwengezwa kwamandla kubangela ama-athomu nama-molecule ukuthi enze izinto zihambe ngokushesha. Uma kuhamba, i-molecule inamandla e-kinetic (KE = 1/2 mv 2 ). Ama-molecule ahamba ngokushesha (amandla amakhulu e-kinetic) ashaya ama-molecule aseduze kwawo. I-molecule ishaya enye i-molecule eduze kwayo. Njalo njalo. Ngakho-ke, ama-molecule ashayisana ngenkathi ehamba amandla. Ukudluliselwa kokushisa okwenzeka ngokushayisana phakathi kwama-molecule ento kubizwa ngokuthi ukudluliselwa kokushisa ngokuqhutshwa komoya.
2. Isibalo sokudluliselwa kokushisa ngokuqhutshwa komoya
Into etholakala ngakwesobunxele inokushisa okuphezulu (T1) kuyilapho into etholakala ngakwesokudla inokushisa okuphansi (T2Ngenxa yomehluko wokushisa (T)1 - T2), ukushisa kuhamba kusuka entweni enokushisa okuphezulu kuya entweni enokushisa okuphansi (isiqondiso sokugeleza kokushisa ngakwesokudla). Into edluliswa ukushisa inendawo enqamulayo (A) kanye nobude (l).
Ngokusekelwe emiphumeleni yokuhlolwa, ukushisa okunyakazayo phakathi nesikhathi esithile (Q/t) kuhambelana ngqo nomehluko wokushisa (T 1 – T 2 ),
indawo enqamulayo (A), uhlobo lwento (k = ukuqhutshwa kokushisa) kanye nokulingana okuphambene nobude bento. Ifomula yokudluliselwa kokushisa ngokuqhutshwa:
Incazelo: Q/t = izinga lokudlulisa ukushisa, k = ukuqhuba ukushisa, A = indawo enqamulayo, T 1 = izinga lokushisa eliphezulu, T 2 = izinga lokushisa eliphansi, l = ubude bento.
3. Ukushisa (k)
Kungani izitsha zokupheka eziningi zenziwe nge-aluminium? Uma isandla sakho sokhohlo sibamba insimbi, isandla sakho sokunene sibamba ingilazi, khona-ke insimbi nengilazi kuyathinteka emlilweni. Isandla sokhohlo noma isandla sokudla sizizwa sishesha? Le mibuzo kanye neminye imibuzo oyoyibuza ihlobene nokushisa kwezinto. Ukushisa kwezinto yikhono lento ukuhambisa ukushisa entweni. Izinto ezine-thermal conductivity enkulu (k) zingabaqhubi bokushisa abahle (abaqhubi bokushisa abahle). Ngokuphambene nalokho, izinto ezine-thermal conductivity encane zingabaqhubi bokushisa ababi (abaqhubi bokushisa ababi).
4. Ukusetshenziswa kokudluliselwa kokushisa ngokuqhutshwa komoya
Kungani ithayela lizwakala lipholile kunekhaphethi? Amathayela anomoya wokushisa omkhulu kunamakhaphethi. Ngakho-ke, ithayela liyi-heat conductor enhle, kanti ikhaphethi liyi-heat conductor embi. Uma sihamba phezu kwekhaphethi, ukushisa kugeleza kusuka ezinyaweni kuya ekhaphethini. Lokhu kwenzeka ngoba izinga lokushisa lomzimba wethu liphakeme kunezinga lokushisa lekhaphethi. Ikhaphethi iyi-heat conductor embi, ngakho ukushisa okugeleza kusuka ezinyaweni zethu kuqongelela ebusweni bekhaphethi, ngakho ikhaphethi iba shushu. Uma sihamba phezu kwethayela noma i-ceramic, ukushisa kugeleza kusuka onyaweni kuya ethayela noma i-ceramic. Ngenxa yokuthi amathayela ayi-heat conductor enhle, ukushisa akunamatheli ebusweni bethayela. Ukushisa kugeleza kahle ukuze izinyawo zethu zizwe zibanda.
Ukulala phansi endlini ngaphandle kwesisekelo kungabangela ubuhlungu. Kungani? Lokhu kungenxa yenani lokushisa elisuka emzimbeni liye phansi. Ukushisa yiwona amandla ahambayo. Uma umzimba wakho ulahlekelwa ukushisa okuningi, amandla emzimbeni wakho ayancipha. Uma untula amandla, ungagula!
Yimiphi imisebenzi yamafasitela neminyango? Kungani iminyango namafasitela kufanele kwenziwe ngokhuni? Ebusuku, izinga lokushisa ngaphandle kwendlu liphansi kunezinga lokushisa lomoya ngaphakathi kwendlu. Lo mehluko ekushiseni komoya ubangela ukuba ukushisa kusuke ngaphakathi kwendlu kuye ngaphandle kwendlu. Ngakho-ke, ngokuvamile ebusuku, sivala iminyango noma amafasitela. Umoya ovaleleke ngaphakathi kwefasitela noma emnyango usebenza njengesivikelo esihle. Uma ukuhanjiswa kokushisa kwento kuncane, kuba nzima kakhulu ukudlulisa ukushisa ngokuqhutshwa komoya entweni.
Ngaphezu kokugcina isimo sethu njengabantu abaphucukile nabavamile, izingubo ziphinde zisebenze ukugcina izinga lokushisa lomzimba wethu lizinzile. Izingubo esizisebenzisayo zivame ukulungiswa ukuze zivumelane nokushisa komoya. Uma izinga lokushisa lomoya liphansi ngokwanele, izingubo esizisebenzisayo zijiyile. Izingubo zokulala ezijiyile noma izingubo (amajakethi njll.) zenza umoya ungakwazi ukuhamba. Umoya uvaleleke phakathi kwesikhumba nejakethi noma ingubo yokulala. Ngenxa yokuthi kunomehluko wokushisa phakathi komzimba wethu nomoya ovalelekile, ukushisa kuhamba kusuka emzimbeni kuye emoyeni. Ukwengezwa kokushisa okuvela emzimbeni kubangela ukuthi izinga lokushisa lomoya ovalelekile likhuphuke (umoya uba shushu). Inani lomoya ohambisa ukushisa lincane. Ngakho-ke, ukushisa akukwazi ukuphuma emzimbeni. Izinga lokushisa lomzimba wethu nalo liyagcinwa. Uma singasebenzisi ijakethi lapho umoya ubanda ngokwanele, ukushisa kuyaphuma emzimbeni wethu. Lapho ukushisa okuningi kuphuma emzimbeni, umzimba ulahlekelwa amandla amaningi!
