| 摘要 |
<p>Tube and plate heat exchanger consists of tubes for the first medium run through holes pierced in the plates whose profile is corrugated symmetrically, in the direction in which the second medium flows. The crests and troughs of each cooled plate are placed opposite the crests and troughs in the adjoining plates to form continuous and symmetrical diffuser and confuser sectors in the channel between the plates. The opening angle PSI of the diffuser should exceed the critical primary loss angle of the hydrodynamic stability of the laminar flowing medium. The inner radius of curvature of the crests and troughs should not exceed twenty times the plate thickness.. Heat exchangers for motor vehicles, tractors Intensified convective heat exchange is achieved, as compared with exchangers fitted with smooth channels. The selected angles and corrugation curvature ensure maximum turbulence and heat transfer from cooling air to the channel walls. This also prevents soiling by settled particles carried in with the cooling air.</p> |
