(under subclass 259.1) Apparatus in which cooling of air or an object takes place by the evaporation of water into air in an open system, e.g., roof coolers.
(1) Note. An open system is one which is not sealed from the atmosphere for operation at or substantially at atmospheric pressure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
121, for related processes.
304+, for material cooling means including a gas-liquid contactor.
SEE OR SEARCH CLASS
261, Gas and Liquid Contact Apparatus, appropriate subclasses for gas-liquid contact apparatus.