Heat recovery from shower water

With our innovative, double wall safety tubes, the previously unknown potential of heat recovery from grey water can be utilized.

Did you know that in Central Europe around 65% of domestic hot water is used for showering? Around 10 kWh is needed to heat 200 liters of water from 10 to 55 degrees Celsius. The thermal energy of the water is only used for a very short time and then disappears mostly down the shower drain.

With shower water heat recovery, a large part of the energy amount can be extracted from the draining hot shower water to preheat the incoming cold water. With this technology, the simultaneous occurrence of hot waste water and cold fresh water is used to efficiently reduce the energy requirement without the need for auxiliary energy or storage.

Made of copper and featuring an optimized design, Wieland safety tubes offer highest heat transfer performance even in bent condition. We can offer a portfolio for your system design or adapt to your individual concept requirements.

Horizontal heat recovery systems: To integrate the heat transfer unit into the shower drain or below the shower surface, Wieland safety tubes are carrying cold tap water on the inside and surrounded by hot shower drain water on the outside.

Vertical heat recovery systems: Safety tubes for shower pipe heat exchangers have a larger cross-section with falling drain water on the inside and cold tap water to be preheated in counterflow on the outside. These systems are used instead of a classic downpipe in the basement or one floor below the shower.