Finned tube yog cov khoom siv hluav taws xob feem ntau siv thaum muaj qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov kub thiab txias ntawm sab hauv thiab sab nraud ntawm lub raj.

Finned tube yog cov khoom siv hluav taws xob feem ntau siv thaum muaj qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov kub thiab txias ntawm sab hauv thiab sab nraud ntawm lub raj.

Los ntawm kev ntxiv cov fins sab nraum lub raj kom ua tiav qhov kev nthuav dav ntawm thaj chaw saum npoo av, qhov sib txawv ntawm qhov sib txawv ntawm cov cua sov sab hauv thiab sab nraum lub raj raug txo kom tsawg, ua rau nws txoj kev siv dav tshaj plaws hauv huab cua hloov pauv.

Cov yam ntxwv ntawm kev ua haujlwm ntawm cov hlab finned feem ntau yog tshwm sim hauv cov ntsiab lus hauv qab no:;

1; Qhov ntsuas kub tsawg kawg nkaus los ntawm kev sib cuag siab thiab thermal kuj; Cov laj thawj tseem ceeb yog hom fins thiab cov kev cai rau kev ua haujlwm zoo.

2; Cov ntaub ntawv Fin muaj qhov sib txawv tseem ceeb hauv thermal conductivity ntawm cov khoom sib txawv. Los ntawm kev xa mus rau qhov cua sov, nws raug nquahu kom xaiv cov ntaub ntawv uas muaj cov thermal conductivity siab thiab cov nqi tsim khoom qis raws li cov ntaub ntawv fin los yog lub hauv paus raj. Lub thermal conductivity ntawm ntau hom hlau yog raws li nram no:;

⑴ Nyiaj --429 W/(m/degree)

⑵ Copper -- -401 W/(m/degree)

⑶ Kub --317 W/(m/degree)

Aluminium -203.5 W / (m / degree)

Brass -64-85.5 W/(m/degree)

Tin --67 W/(m/degree)

Cam khwb cia hlau -62.8 W / (m / degree)

Nickel --58.2 W / (m / degree)

Hlau -45.3 W / (m / degree)

(10) Lead --34.9 W/(m/degree)

(11); Stainless hlau -17 W / (m / degree)

Peb; Anti corrosion kev ua tau zoo, siv cov ntaub ntawv tsim nyog raws li qhov nruab nrab sab hauv thiab sab nraud cov yeeb nkab los txhim kho corrosion kuj ntawm cov fins. Cov ntaub ntawv sib txawv ntawm cov qauv fin kuj muaj qee yam cuam tshuam rau corrosion kuj.

4; Kub tsis kam, cov ntaub ntawv sib txawv fin muaj cov ntsiab lus sib txawv. Xav txog cov yam ntxwv ntawm qhov nruab nrab qhov kub thiab txias, cov khoom siv fin tube tsim nyog yuav tsum tau xaiv kom tsis txhob siv cov ntaub ntawv uas tsis tshua muaj melting point ntawm qhov kub thiab txias thiab cov khoom siv melting point ntawm qhov kub tsawg.

Tsib; Kev ua haujlwm kub hloov pauv tsis yog tsuas yog cuam tshuam los ntawm cov khoom siv, tab sis kuj los ntawm cov txiaj ntsig ntawm ntau yam. Hom qauv, ua daim ntawv, kev tsim khoom, thiab lwm yam ntawm cov fins yuav muaj kev cuam tshuam loj heev rau kev ua haujlwm ntawm cov cua sov.

Rau; Qhov nyuaj ntawm kev tu yog muaj feem xyuam rau hom thiab kev tsim cov txheej txheem ntawm cov fins, thiab fins nrog wrinkles thiab nquag mus rau qhov chaw nyob muaj kev tu siab nyuaj ntawm tib lub suab.

Xya; Nqi ua haujlwm. Qhov piv ntawm cov kev qhia ua tau zoo ntawm cov raj finned rau cov nqi tsim khoom.

Yim; Wing to wing ratio. Qhov sib piv ntawm qhov siab tshaj plaws tshav kub pauv thaj chaw uas tuaj yeem ua tiav los ntawm lub raj finned mus rau thaj tsam ntawm lub raj liab qab ua ntej ua haujlwm.

Muaj ntau ntau hom finned raj:;

1; Lub raj bimetallic finned raj nrog hlau los yog stainless hlau raj raws li lub hauv paus raj, uas yog compounded nrog txhuas raj ntawm ib tug tshwj xeeb tshuab cuab tam thiab ua tiav rau hauv fins.

2; tooj liab sawb; Cov ntaub ntawv hlau yas xws li txhuas strips muaj L-shaped fins uas tso siab rau cov neeg kho tshuab quab yuam kom sib npaug ntawm cov kav dej xws li cov kav hlau, cov kav hlau tsis muaj steel, thiab cov kav dej tooj liab.

3; Ib leeg hlau finned raj nrog steel strips thiab stainless hlau strips li fins, qhwv nyob rau hauv ib tug inverted Y-puab nyob rau hauv lub hauv paus raj, thiab folded nyob rau hauv qab ntawm lub fins.

4; High zaus tam sim no vuam yog siv thaum winding los ua ke lub hauv paus raj thiab fins, uas yog high-temperature resistant thiab tsis muaj thermal tiv thaiv.

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