HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION

**Definition:** This place covers:

Heat exchangers involving heat transfer between different media without separating wall, e.g. cooling towers.

**Limiting references (this place does not cover):** - Mixers -> B01F - Chemical or physical processes -> B01J - Fluid heaters having heat generating means -> F24H - Regenerative heat exchangers -> F28D17/00 , F28D19/00 - Latent heat storage in direct contact with a heat exchange medium or another latent heat storage medium -> F28D20/02