WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

F28C　HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION (safety devices in general F16P; fluid heaters having heat generating means F24H; with an intermediate heat-transfer medium coming into direct contact with heat-exchange media F28D 15/00 to F28D 19/00; details of heat-exchange apparatus of general application F28F)

F28C 1/00 Direct-contact trickle coolers, e.g. cooling towers (building construction E04H 5/12; enclosed spaces cooled by trickle F25; components parts of trickle coolers F28F 25/00; {indirect-contact cooling towers F28B 1/06})

F28C 1/003 ・{comprising outlet ducts for exhaust gases}

F28C 1/02 ・with counter-current only

F28C 1/04 ・with cross-current only

F28C 1/06 ・with both counter-current and cross-current

F28C 1/08 ・Arrangements for recovering heat from exhaust steam

F28C 1/10 ・Arrangements for suppressing noise

F28C 1/12 ・Arrangements for preventing clogging by frost

F28C 1/14 ・comprising also a non-direct contact heat exchange

F28C 1/16 ・Arrangements for preventing condensation, precipitation or mist formation, outside the cooler (F28C 1/14 takes precedence)

F28C 3/00 Other direct-contact heat-exchange apparatus

F28C 3/005 ・{one heat-exchange medium being a solid (F28C 3/10 takes precedence)}

F28C 3/02 ・the heat-exchange media both being gases or vapours

F28C 3/04 ・the heat-exchange media both being liquids

F28C 3/06 ・the heat-exchange media being a liquid and a gas or vapour (temperators for cooling steam F22)

F28C 3/08 ・・with change of state, e.g. absorption, evaporation, condensation (generating steam under pressure F22)

F28C 3/10 ・one heat-exchange medium at least being a fluent solid, e.g. a particulate material

F28C 3/12 ・・the heat-exchange medium being a particulate material and a gas, vapour, or liquid

F28C 3/14 ・・・the particulate material moving by gravity, e.g. down a tube

F28C 3/16 ・・・the particulate material forming a bed, e.g. fluidised, on vibratory sieves

F28C 3/18 ・・・the particulate material being contained in rotating drums

F28C 2001/00 Direct-contact trickle coolers, e.g. cooling towers (building construction E04H 5/12; enclosed spaces cooled by trickle F25; components parts of trickle coolers F28F 25/00; {indirect-contact cooling towers F28B 1/06})

F28C 2001/006 ・Systems comprising cooling towers, e.g. for recooling a cooling medium (for condensers F28B 9/06)

F28C 2001/14 ・comprising also a non-direct contact heat exchange

F28C 2001/145 ・・with arrangements of adjacent wet and dry passages