F28C - Heat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media come into direct contact without chemical interaction

More topics under "F28C - Heat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media come into direct contact without chemical interaction" (5,458)
F28C 1 - Direct-contact trickle coolers, e.g. cooling towers (2,772)
F28C 3 - Other direct-contact heat-exchange apparatus (2,686)

Patents for F28C - Heat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media come into direct contact without chemical interaction (10)
07/2007
07/18/2007	CN1327182C Liquid absorbing bar of heat-exchange device having cooling liquid and matter-exchange device
12/2006
12/13/2006	CN1878589A Moisture-heat exchanger unit
08/2006
08/16/2006	EP1689475A2 Moisture-heat exchanger unit
10/2005
10/13/2005	WO2005047797A3 Moisture-heat exchanger unit
05/2005
05/26/2005	WO2005047797A2 Moisture-heat exchanger unit
03/2001
03/07/2001	CN1286389A Sheet filled lamination for generating spiral air flow in heat and mass exchange and contact device
05/2000
05/09/2000	CA2115719C Anodic protection method and system
03/1999
03/02/1999	US5875839 Heat exchanger for air conditioner
05/1996
05/07/1996	US5513694 In a heat exchanger for a corrosive fluid
03/1985
03/27/1985	EP0135419A2 Method of membrane evaporation and apparatus