This incredible concept for a self-heating piezoelectric shower combines inspiration from the human body’s circulatory system with technological innovations in piezoelectricity. The fluid web of piping heats water by utilizing energy from friction produced by flowing water — it’s therefore able to function completely off the grid. Conceived by Finnish Sebastian Jansson, Mexican Fernanda Piza, Brazilian Victor Stelmasuk and German Natalie Weinmann, the design not only grabs our attention as an exotic art form but also enlightens us with its energy-efficient design.
This is the kind of thing that gives concepts a bad name. Have they calculated whether the energy in a typical water supply is enough to heat the water? I think not. To heat water through 20 degrees C takes as much energy as you get by allowing the water to fall through 8.3 km. No domestic supply has anything like that head of water.
I calculate a drop of 70psi will give 0.21 degrees F temp increase under ideal adiabatic conditions. (SRK correlation)….in other words David is right, this is nothing more than a pretty, expensive shower.