Page 338 - Applied Process Design For Chemical And Petrochemical Plants Volume III

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Refrigeration Systems 297

Figure 11-11. Steam jet utilities require-
ments when producing 50°F chilled
water temperature. (Used by permis-
sion: ©Croll-Reynolds Company, Inc.)

Figure 11-12. Steam jet utilities require-
ments when producing 60°F chilled
water temperature. (Used by permis-
sion: ©Croll-Reynolds Company, Inc.)

Specification 1. Flexibility of operation desired as this determines the
number of booster jets.
2. Type of condenser: barometric, surface, or low-level jet.
Figure 11-13 is convenient for preparing an initial specifi- 3. Temperature extremes of cooling water for condenser
cation for competitive inquiry, as well as for summarizing and duration of time for these temperatures.
the final accepted performance and specifications. In using 4. Closed or open circuit chilled water.
the specification sheet, supplemental notes should be 5. Discharge heads on chilled water pumps and conden-
included to state: sate pumps, if manufacturer is to furnish.