Heat exchange
# Heat exchange

Heat exchange may refer to:

* Heat transfer, an area of engineering concerned with the transfer of thermal energy (heat)
* Heat exchanger, a device built for heat transfer from one medium to another
   * Air conditioner, a device that cools interior air, such as that of a building or vehicle
   * Heat sink, a device used to absorb energy, typically by using its large mass to raise its temperature slightly or by changing phase
   * Radiator, a device used to either move heat away from an object or heat an interior space by circulating a fluid through thin metal tubes
   * Refrigerator, a device used to cool objects or interior spaces
   * Space heater, a device used to heat spaces, typically interior spaces
