Feem ntau, peb tsuas yog cais cov phaj kub hloov pauv raws li lawv cov qauv, uas yog, lawv tuaj yeem muab faib ua plaub pawg: ① tshem tawm phaj cua kub sib hloov (tseem hu ua phaj kub hloov nrog sealing gaskets), ② Welded phaj kub hloov pauv, ③ Muab kauv phaj ua kom sov cov cua sov, ④ Cov phaj kub hloov ua kom sov (kuj hu ua honeycomb tshav kub ua kom sov).
Ntawm lawv, welded phaj kub hloov pauv tau muab faib ua: semi-welded phaj kub hloov pauv, phaj tag nrho cov phaj kub hloov pauv, phaj phaj thiab plhaub tshav kub hloov pauv, thiab daim phaj kub sib hloov.
Cov kev faib tawm uas nquag siv raws li hauv qab no:
1> Raws li qhov ntau npaum li cas ntawm qhov chaw hloov pauv cua sov hauv chav tsev qhov chaw, cov phaj kub hloov pauv yog cov txauv kub hloov pauv, uas feem ntau yog sib piv nrog lub plhaub thiab lub raj cua hloov cov cua sov.
2> Raws li cov txheej txheem, muaj ntau lub npe sib txawv: phaj rhaub, phaj txias, phaj condenser, phaj ua ntej;
3> Raws li cov txheej txheem sib xyaw ua ke, nws muab faib ua ib leeg dhau ntawm cov phaj hluav taws kub hloov cov pa thiab dhau ntau daim phaj ua kom kub;
4> Raws li cov kev taw qhia ntws ntawm ob qhov kev tawm xov xwm, tau muab faib ua tus txheej txheem kub (cocurrent) phaj kub ua kom sov, lub phaj xa tawm ntawm cov phaj cua sov ua kom sov, thiab cov khoom sib hloov (hla ntws) phaj cov cua kub ua kom sov. Lub tom kawg ob yog siv ntau dua;
5> Raws li qhov sib txawv ntawm cov ntws ntws, 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 ntawm cov phaj kub hloov pauv, uas yuav tsis raug piav qhia meej. Thov xa mus rau cov phaj corrugated phaj ua kom sov.
7> Raws li seb nws ua tiav cov khoom tiav, nws tuaj yeem muab faib ua cov sawv ntsug ib leeg hloov cov cua sov thiab cov phaj kub hloov pauv.