Cooling single manifold

Multilayered laminates with an ABS outer layer can be produced by coextrusion. In this process two or three different polymers may be combined into a multilayered film or sheet. Adhesion is enhanced by cooling the extruded laminate directly from the melt rather than in a separate operation after the components of the sheet have been formed and cooled separately. In one process flows from individual extruders are combined in a flow block and then conveyed to a single manifold die. All the polymer streams should have approximately the same viscosity so that laminar flow can be maintained. 

P-type manifold—veiiical configuration. The P ring dryer (see Fig. 12-100) incorporates a single-stage classifier and was developed specifically for use with heat-sensitive materials. The undried material is reintroduced into a cool part of the dryer in which it recirculates until it is dry enough to leave the circuit. 

Kolb et al. [167] reported the design, fabrication, and testing of another preferential oxidation reactor on the kilowatt scale (Figure 14.25a). Evaporation cooling was used here in a cocurrent flow arrangement. The reformate entered the preferential oxidation reactor from both sides, while the water was circulated in a front distribution chamber at the reactor inlet. Similar to the inlet, the purified reformate left the reactor at both sides, while the superheated steam was gathered in a single outlet manifold. 

Bose-Einstein condensates. Following the exciting progress with cold atoms the experimental challenge became to prepare ultracold molecules. Unfortunately the laser-cooling techniques applied to atoms are not directly transferable to molecules, since these methods rely upon cyclic absorption and spontaneous emission within an almost pure two-level system. The multilevel structure of the electronic states of molecules and the manifold of allowed transitions does not allow for simple iterative excitation with one single laser line. 

Figure 14 Recommended inlet and outlet manifold for air cooler (a) single phase cooling, (b) condensirq .

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