《HTRI_2016年成都年会-板式换热器培训班资料_Xphe1》.ppt

Classic Design Specify case as usual Select Classic Design Run case Algorithm automatically adjusts specific geometry to achieve desired duty within pressure drop constraints Number of channels (plates) Number of fluid passes Pack configuration (how many channels of each type) Grid Design Specify case as usual Select Grid Design Select geometry to consider on Design Geometry panel Geometry parameters Range of geometry Run case Grid of cases is run over specified range of values Design Geometry Click check box to enable variation of item in design run Select different tabs to access all design geometry items Design Constraints Design options (Classic or Grid) will not select a design that violates constraints specified on this panel. Design Warnings Xphe flags (in Design View) any case that violates constraints specified on this panel, but may still be selected for final design Design View Program automatically selects best design. Best is smallest area with acceptable overdesign and no constraint violations. User may also select any alternate design. Lines in red indicate runs that violate design constraint (C) or design warning (W). Example 1Oil Cooler Open Example1.htri TEMA AEU oil cooler ?-in. tubes 10 ft long TEMA fouling factors Example 1Design Plate Frame Oil Cooler Select File menu, New Plate and Frame Exchanger Select Window menu, Tile Horizontally Drag-and-drop Process Hot fluid properties Cold fluid properties Example 1Single-Phase Design Create plate-and-frame design Change fouling resistances Hot side 0.00005 Btu/hr ft2 °F Cold side 0.0005 Btu/hr ft2 °F Positive overdesign required 10 psi maximum pressure hot and cold sides Suggestions: Use plate databank Use grid design to approximate design Session View Select case and right-click to display context menu Use Edit menu, Program Settings to enable/disable log runs in session view Module 1 Summary and Conclusions Xphe performs detailed incremental calculations for most plate-and-frame geometries