(under the class definition) Devices having two separate compartments not in communication, the liquid to be vaporized being in one compartment and heated by a hot fluid in the other compartment.
(1) Note. Slag heated boilers, where the slag heats a fluid like air or water which in turn imparts its heat to the water in the steam making chamber and water evaporating apparatus indirectly heated, provided the structure of such apparatus must act as a vapor or steam generator, are classified in this and its subsidiary subclasses. Even sugar evaporators and vacuum pans are classified here if the structure is such as to be of general application as a steam generator and the discharge outlet for the syrup is only of such a character as to be equally adapted for a blow-off conduit for sludge in a
steam generator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
483, for superheaters indirectly heated.
SEE OR SEARCH CLASS
62, Refrigeration, 45.1, for process and apparatus for vaporizing liquefied gas requiring steps or means involving pressure or temperature control special to liquefied gas and more than required for other liquids.
165, Heat Exchange, appropriate subclasses for a heat exchanger having two noncommunicating chambers not having a vapor separator in a heated chamber.
210, Liquid Purification or Separation,
175+, for a heater combined with apparatus of that (210) class.
