This video explains the principle of vaporizer operation.
Vaporizer is essentially a vaporizing chamber surrounded by water jacket. The water is heated by an electric immersion heater, thermostatically controlled, to maintain a constant temperature. Liquid chlorine, Sulphur dioxide or Ammonia enters the vaporizing chamber through the inlet tube and is piped through the bottom of the vaporizing chamber. After it emerges from the tube, the liquid absorbs heat from the hot water and vaporizes.
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