Heizkörpern

Heizkörpern, commonly known as radiators in English, are a central component of central heating systems. Their primary function is to transfer heat from hot water circulating within them into a room, thereby warming the space. This heat transfer typically occurs through convection and radiation. Hot water, heated by a boiler, flows through the pipes of the Heizkörper, warming the metal surfaces. As the air around the radiator heats up, it becomes less dense and rises, creating a convection current that circulates warm air throughout the room. Simultaneously, the heated surfaces of the radiator emit thermal radiation, which directly warms objects and people in its vicinity.

Heizkörpern come in various designs and materials, with steel and cast iron being the most common. Steel radiators are often lighter and more responsive to temperature changes, while cast iron radiators retain heat for longer periods, providing a more consistent warmth. Common forms include panel radiators, which are flat and discreet, and column radiators, which consist of multiple vertical sections. The size and output of a Heizkörper are crucial for effectively heating a room, determined by factors such as room dimensions, insulation levels, and desired temperature. They are typically connected to a central boiler via a network of pipes and controlled by thermostatic radiator valves (TRVs) or a central thermostat to regulate room temperature and energy consumption.