Fig. 597 Counter-Current Barometric Condensers are used where water supply is limited or an excessive amount of non-condensables requires the use of a separate vacuum pump, and local conditions necessitate a side vapor inlet. Fig. 597 Counter-Current Barometric Condensers are the only condenser available in small sizes to meet the requirements of the above conditions.
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In both the Fig. 597 and Fig. 598 units, injection water enters the condenser through a water nozzle at the top of the unit. A distribution tray in the shell provides a “water curtain” through which the vapor must pass. The spray nozzles are located to provide maximum effective distribution independent of the leveling of the condenser. Most of the vapor entering the condenser is condensed in the lower part of the shell, and the non-condensables are then required to travel upward through the water curtains. A baffle arrangement is provided at the air suction connection to reduce to a minimum the carry-over of water that may have been entrained as the air passes through the condenser.
Fig. 597 and Fig. 598 Counter-Current Barometric Condensers have no moving parts. Little maintenance is required and provision can be made for internal inspection of the unit. Because of the barometric leg, no water removal pump is required. Due to efficient cooling of non-condensables, the supporting vacuum pump requires a minimum of live steam for efficient operation. S&K Counter-Current Condensers can be supplied in cast iron or steel plate, as well as most special materials. The construction also lends itself readily to rubber lining.
Permits gravity drainage of the condensate and condensing water and eliminates the need for removal pumps when combined in a multi-stage steam jet ejector system used in a multitude of applications.