COOLING OF MACHINES OR ENGINES IN GENERAL

**Definition:** This place covers:

Cooling of machines, where "machine" means a device which could equally be an engine and a pump, and not a device which is restricted to an engine or one which is restricted to a pump.

Cooling of engines, where "engine" means a device for continuously converting fluid energy into mechanical power, e.g. steam piston engines or steam turbines.

Cooling of internal combustion engines.

**Limiting references (this place does not cover):** - Cooling of machine tools -> B23Q1/00 - Arrangements in connection with cooling of propulsion units in vehicles -> B60K11/00 - Heat-exchange or heat-storage materials -> C09K5/00 - Cooling of gas-turbine engines -> F02C7/12 - Profiting from the waste heat of the exhaust gases -> F02G5/02 , F01N5/02 - Cogeneration -> F25B27/02 - Heat exchange in general, radiators -> F28 - Cooling of electric machines -> H02K9/00

**Glossary:** - Air: gaseous cooling fluids - Liquid cooling: includes also cooling where liquid is used as the heat transferring fluid between parts to be cooled and the air, e.g. using radiators - Air cooling: direct air cooling and thus excludes indirect air cooling occurring in liquid cooling systems as explained herefore - Cooling air: directly or indirectly acting air for cooling - Engine: device for continuously converting fluid energy into mechanical power. Thus, this term includes, for example, steam piston engines or steam turbines, per se, or internal-combustion piston engines, but it excludes single-stroke devices. "Engine" also includes the fluid-motive portion of a meter unless such portion is particularly adapted for use in a meter - Machine: device which could equally be an engine and a pump, and not a device which is restricted to an engine or one which is restricted to a pump