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Kev siv ntau dua ntawm "system pressure" yog lub hom phiaj los ua kom muaj peev xwm ua kom muaj cua sov tsis muaj peev xwm ua kom tsis muaj qhov chaw loj thiab cov nqi tsim khoom, uas tau siv dav hauv txawv teb chaws.
Cov cua sov ua kom tsis muaj peev xwm Q ntawm lub dab dej tso tawm tuaj yeem qhia los ntawm cov qauv hauv qab no: Q = K · S · (twcp-tacp) (1)
Q - tshav kub dissipation muaj peev xwm, KJ / h;
K —— Thaum tshav kub kub dissipation coefficient, KJ / m2h ° C);
S —— qhov chaw tshav kub kub, m2;
(twcp-tacp) - qhov nruab nrab ntawm qhov sib txawv ntawm cov kua thiab cov roj, ° C.
Nws tuaj yeem pom los ntawm kab zauv (1); nyob rau hauv qhov kev xam pom tias qhov tseem ceeb ntawm K thiab S yog tas li, tsuas yog Q tuaj yeem raug nce los ntawm nce cov txiaj ntsig ntawm tWCp thiab tacp.
Yog tias lub kaw lus ceev yog 29.4 kPa, qhov taw tes kub ntawm qhov txias yog 105 ° C;
Lub kaw lus ceev yog 49 kPa, thiab cov taw tes kub ntawm qhov txias yog 111 ° C;
Lub kaw lus ceev yog 98.7 KPa thiab cov roj txias thaum kub taw tes yog 120 ° C.
Thaum lub kaw lus ceev tau nce, cov tucp yuav nce. Thaum lwm cov kev ntsuas tsis hloov, qhov nruab nrab ntawm qhov kub nruab nrab ntawm cov kua roj (twcP-tacp) yuav nce, yog li ua tiav lub hom phiaj ntawm kev txhim kho lub tshav kub dissipation muaj peev xwm. Ua kom lub kaw lus siab tsis tsuas yog pab txhawm rau kom muaj peev xwm ua kom muaj cua sov kom tsis txhob muaj peev xwm, tab sis kuj pab txhim kho lub cav kom sib xyaw ua haujlwm kom zoo thiab txo cov twj cavitation. Tau kawg, nce qhov system ceev yuav nce qhov tshwm sim ntawm to ntawm radiator.
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