Lub raj ntim ntawm U-zoo li lub raj cua kub exchanger yog khoov rau hauv U-shaped, thiab ib qho kawg ntawm ob lub nozzle yog tsau rau ntawm lub phaj phaj, thiab ib qho kawg ntawm U-shaped raj tsis kho thiab tuaj yeem nthuav dav thiab ywj siab. cog lus, yog li tsis muaj qhov sib txawv ntawm qhov kub thiab txias. Ntxiv mus, cov qauv yog yooj yim, thiab tsuas muaj ib lub raj phaj, uas txuag cov ntaub ntawv. Txawm li cas los xij, cov kua dej hauv cov hlab ntawm cov khoom siv hluav taws xob no yog ob npaug, thiab muaj ib feem ntawm qhov sib txawv ntawm qhov nruab nrab ntawm lub raj ntim. Lub plhaub-sab kua dej yog qhov ua rau kub-siab, siab-siab, thiab corrosive heev, tab sis tsis yooj yim rau scale. Cov kua dej uas ua rau fouling tuaj yeem tawm mus sab nraum cov yeeb nkab.