Heat transfer - heat is not the same as heat

Radiators play an important role in the quality of the room atmosphere. They emit heat in two ways: Through convection and radiation. Depending on the type, they pollute the air more or less.

First: by convection. The air heated at the radiator flows upwards. It then cools off at the ceiling and the walls and flows back to the radiator. There, the cool air gets heated and rises once again. Stressing dust swirls up into the air of the room with the movement of air through convection heat.

Secondly: by radiation. Heat also gets transferred through radiation, by electromagnetic waves. The radiator transmits waves. The surrounding surfaces - the walls, ceilings and floors - absorb the waves and convert them into heat energy. After a certain time, the surrounding surfaces themselves transmit heat. No air flow results, i.e. the radiation heat does not swirl up any dust.

The air is clean.

Zehnder radiators are suitable for use in modern heating systems in the low temperature range. And they minimize the swirling of dust thanks to their high proportion of radiant heat. For pure air.