Media · underfloor heating
A hidden sun: under your feet.
A silent system that creates no draughts and gives half of its heat by radiation, like the sun: underfloor heating.
Three paths · one surface
Heat reaches you by three paths .
Like the sun
It heats you and the surfaces around you, not the air.
By touch
The moment your foot touches the warm floor, heat passes directly.
Gentle air
Slowly rising warm air; it raises no dust and makes no noise.
Data evidence · vertical temperature
Warm feet, cool head.
One of the ISO 7730 comfort criteria is keeping the temperature difference between feet and head small. Underfloor heating is the system closest to the ideal curve; radiators pile the heat up at the ceiling.
History
A two-thousand-year-old idea, a new material.
- 1st century BC
The Roman hypocaust
An underfloor heating tradition that reaches the hammams of Anatolia.
- 1933
Polyethylene
Obtained for the first time with high pressure.
- Mid-1960s
The Engel method
Thomas Engel cross-links polyethylene: PEX-a.
- 1972
Munich Olympic Stadium
PEX-a pipe is laid under the stadium pitch.
- 1986
ISIYER
Underfloor heating gets a strong start in Türkiye.
- 1990s
TABS
Pipes in the concrete core: heating and cooling together.
- Today
Bioiklim
Heating, cooling and hot water in a single radiant system.
On a skyscraper scale · example
Pearl River Tower
Offices cooled by radiant ceilings, solar panels built into the façade and wind turbines fed by the shape of the building. One of the largest-scale examples of a radiant surface.
- City
- Guangzhou
- Year
- 2011
- Floors
- 71
- Target
- ~%58