The height of the column represents the sum of 3 terms: There are two dimensions of importance in the barometric columnĬross-section of the column Height of the barometric column : The Condenser is a barometric chamber extended at bottom by a barometric column dipping into a well open to atmosphere. The Condenser is placed at a height that the water after condensation flow out by gravity together with condensed vapours. Thus we have created a vacuum.Ĭ) With the aid of an air pump or other, vacuum is produced in an enclosed vessel called a condenser, which communicates with the vessels to be maintained under vacuum.ĭ) Cold water is pumped in to the condenser to ensure condensation of vapour coming from pan or multiple effect evaporator. Creation of Vacuum:Ī) In a condenser, we condense large volume of vapour and it will only produce a comparatively small volume of wateror (condensate) and this water runs out through the bottom of the condenser down the barometric leg with the waste water.ī) Therefore if we have condensed the large volume of vapor into small volume of water in a condenser, the remaining volume or area must be a vacuum(reduced). Nearly all these vessels use direct contact condensers, where the cooling water comes into direct contact with the vapour to be condensed. Condenser System for vacuum creations and its types with design criteriaĬondenser system and vacuum equipment are common to evaporators and vacuum pans.
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