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