Wilhelm Maybach, a designer in 1897, Germany, design a radiator consisted of cooling ducts shaped as honeycombs through which hot air from the engine was drawn into by a fan.
- Radiator (engine cooling) – Wikipedia
Radiators are heat exchangers used for cooling internal combustion engines, mainly in automobiles but also in piston-engined aircraft, railway locomotives, motorcycles, stationary generating plant or any similar use of such an engine.
- Radiator – Wikipedia
Radiators are heat exchangers used to transfer thermal energy from one medium to another for the purpose of cooling and heating. The majority of radiators are constructed to function in automobiles, buildings, and electronics.
- Car History 4U – History of Radiators in Motor Cars / Automobiles – (via the Wayback Machine)
The first honeycomb radiator was designed by Wilhelm Maybach and fitted to the 1901 Mercedes 35 hp model.
- A History of Automotive Coolants | Know Your Parts
Liquid coolants (usually a half and half mixture of water and ethylene glycol (EG) based antifreeze) are used to manage heat in automotive internal combustion engines.