Plant water vapor flow density

Fig. 1.89. Density of water vapor flow (g/cm2 h) as function of pch with jet flow (1) and l/d = 1 (2), 1.6 (3), 2.5 (4) and 5 (5) as parameter (4) and (5) are not plotted below 4 X 10-2 mbar, this data depends very much on the design details of the plant. They should be measured if needed...

Hydraulic for the pressure plate to push the stoppers into the vials Valve 100 mm diameter. Required as per Table 1 are for product A, " 90g/h water vapor at 0.08 mbar, for product B 60g/h at O.lmbar. The vapor flow density as shown in Figure 4 at 0.08 mbar 1.1 to 1.5 g/hcm (depending on the //d ratio in the plant) and at 0.1 mbar 1.7 to 2.3 g/h cm. By these calculations product A requires a valve between 85... 

In pilot freeze-drying plants the connection between the chamber and the condenser has usually a diameter large enough for the transport of the water vapor. In large production plants this diameter has to be estimated. Theoretically the maximum flow density (g/h cm2) is achieved if the following conditions are met The diameter of the connection d has to be large, compared with its length /, / J, a smooth outlet from the chamber and a smooth inlet into the condenser with no obstacles in the connection (e.g., no valve plate) and s This flow density... 

Table 3 Flow Density of Water Vapor at Various Pressures in the Pilot Plant...

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