Nyob rau hauv ib txwm muaj xwm txheej, peb tsuas yog cais cov phaj kub hloov pauv raws tus qauv, uas yog, raws li cov qauv duab, uas tuaj yeem muab faib ua plaub pawg: emRemovable phaj kub sib hloov (tseem hu ua phaj kub hloov pauv nrog gaskets), ② Welded phaj kub hloov pauv , ③ Kauv phaj kub ua kom sov hloov, ④ Cov phaj kub hloov ua kom sov (tseem hu ua honeycomb ua kom sov tshav kub).
Ntawm lawv, welded phaj kub ua kom sov tau muab faib ua: semi-welded phaj kub ua kom sov, phaj tag nrho cov phaj ua phaj kub ua kom sov, phaj plhaub thiab plhaub cua kub ua kom sov, thiab brazed phaj kub ua kom zoo dua.
Cov nquag muab tso tawm yog raws li nram no:
1 Raws li tus nqi ntawm tshav kub pauv hauv cheeb tsam ntawm chav tsev, cov phaj kub hloov pauv yog cov sib txig hloov tshav kub. Piv nrog lub plhaub-thiab-raj cua sov hloov pauv, tsoos plhaub-thiab-raj kub hloov pauv nyob hauv thaj chaw loj dua.
2 Raws li cov txheej txheem pab, muaj ntau lub npe sib txawv: phaj rhaub, phaj txias, phaj condenser, phaj preheater;
3 Raws li cov txheej txheem sib xyaw ua ke, nws muab faib ua ib leeg dhau ntawm cov phaj hluav taws kub thiab cov kis tau raws ntau phaj;
4 Raws li cov kev taw qhia ntws ntawm ob qhov kev tawm, nws muab faib ua co-tam sim no (cocurrent) phaj cov cua sov ua kom sov, txee tawm phaj cov cua kub pauv, thiab cov kab hluav taws xob (hla-ntws) phaj cov cua kub pauv, qhov kawg ob yog ntau dua siv;
5 Raws li cov kis loj ntawm cov khiav, nws muab faib ua cov pa hluav taws xob sib txawv phaj cua sov ua kom sov thiab dav sib txawv phaj cua sov ua kom sov;
6 Raws li kev sib dhos, muaj ntau cov ntsiab lus sib txawv sib txawv hauv cov phaj kub hloov pauv, uas yuav tsis rov ua dua, thov hu rau: phaj phaj kub hloov ua daim ntawv corrugated.
7 Raws li seb nws ua tiav cov khoom tiav, nws tuaj yeem muab faib ua cov tshav kub ib leeg hloov phaj thiab cov phaj ua kom sov.
