Principle of Operation
Fig. 301 Quiet Heaters are designed to heat liquids in tanks by condensing steam in the liquid and by causing circulation of the steam-heated liquid within the tank. These heaters employ entrained atmospheric air to reduce the loud noise usually associated with the introduction of steam into cold liquids.
Fig. 314 Sparger Nozzles are designed to be submerged in the liquid to be heated. Heaters of this type are recommended for use in cases where it is desired to start heating from a shallow level, where uniform agitation and heating is required over a large, shallow tank area, where steam pressures are low, and where solids in the liquid might tend to clog the small passages in other type heaters.