Izakhiwo ezishisayo zegwebu lensimbi zihlanganisa iphuzu elincibilikayo, ukushisa okuqondile, i-coefficient yokwandisa ukushisa, ukuqhutshwa kwe-thermal, i-thermal diffusivity, i-thermal radiation kanye nokumelana nokushisa okushisayo, okunye okufana ne-matrix material, kanti ezinye zihlobene ne-porosity, i-Pore. uhlobo nosayizi we-pore kuhlobene eduze.
Izinto ezinokusebenza kahle kwe-thermal zivame ukumunca ukushisa ngokushesha futhi zikhiphe ukushisa ngokushesha. Uma ezinye izinhlelo zidinga inani elikhulu lokumuncwa kokushisa noma ukuchithwa kokushisa ngesikhathi sokusetshenziswa, izinto ezinokusebenza kahle kwe-thermal ziyakhethwa. Ngokwezinga lokushisa elishisayo lezinsimbi ezihlanzekile, isiliva, ithusi, i-aluminium, i-tungsten, i-magnesium nezinye izinto, kanti ukuqhutshwa kokushisa kwama-alloys ngokuvamile kubi kakhulu. Kungabonakala ukuthi i-thermal conductivity yamasinki okushisa ethusi iyona engcono kakhulu phakathi kwezinsimbi zezimboni.

Pho kungani amasinki okushisa enziwa kakhulu nge-aluminium esikhundleni sethusi?
Kuyiqiniso futhi ukuthi ithusi liqhuba kahle ukushisa ngoba line-conductivity ephakeme kakhulu ye-thermal kune-aluminium. Kodwa amandla okushisa okushisa kwe-radiator axhomekile kuphela ekuphatheni okushisayo kwezinto ezibonakalayo, kodwa futhi endaweni yokushisa ukushisa, ukuma kwe-radiator, nezimo zokugeleza komoya.
Kungakhathaliseki ukuthi umthamo othile wokushisa wethusi uncane kangakanani, umthamo wokushisa othize wethusi kufanele ube ngaphansi, izinga lokushisa lawo likhuphuke ngokushesha, futhi kulula ukuqeda ukushisa. Kodwa-ke, ukuminyana kwethusi kuphindwe izikhathi ezingu-3.3 kune-aluminium. Irediyetha ingumkhiqizo wosayizi futhi ayikwazi ukukhuliswa unomphela. Khona-ke isisindo sethusi sikhulu kumthamo ofanayo.
Ngaphansi kwezici eziningi, izindleko zama-radiators zethusi zivame ukubiza ngaphezu kwe-400% kune-radiator ye-aluminium, kodwa ngokwentengo, imakethe ayikwazi ukwamukela ama-radiator ethusi aphindwe izikhathi ezingu-4 intengo.
Ngakho-ke ingabe ikhona into engaba ne-thermal conductivity yethusi, kodwa umthamo nesisindo kuqhathaniswa ne-aluminium?
Ithusi elinegwebu lingase libe into entsha efanele ukunakwa, enama-pores amaningi axhunyiwe futhi anqanyuliwe asatshalaliswa ngokulinganayo ku-matrix yethusi. Ithusi elinegwebu linokusebenza kahle kukagesi kanye ne-ductility, futhi linezindleko eziphansi zokulungiselela kanye nokuhamba kahle kukagesi.