Recuperate some of the heat from a group of showers

John · 2007-08-23T20:07:43+00:00

I am working on a project whose objective is to recuperate some of theheat from a group of showers .The design is very simple if there is a space of a couple of feetbelow de shower floor . I believe we can get back about 50% of the heat normally going downthe drain.But , there is no space below the shower's floor.Installing an electric pump defeats the purpose .What about installing a pump coupled to a turbine propelled by thewater used by the showers to raise the gray water by about 2 or 3 feetin order to feed the unit that, by gravity recuperates some of theheat?I know that will reduce the water pressure but will it work and beacceptable by the users?The showers can have an escape drain that will bypass the recoverysystem if the gray water raises above a certain level, an electricpump that will operate and bring the water level to zero if the systemfails or a mechanical system that revert everything to a traditionalconfiguration.Comments pleaseJohn