The comfort of a DHW loop without the waste of energy.
All common hot water loops waste a lot of energy, the only ECS loop that does not waste energy is operated by the tap lever.
It is easy to measure the amount of energy lost in the hot water circulation loop by installing a calorie counter on the loop return with the temperature sensors at the ends of the loop and a counter on the power supply of the circulator.
A measurement in a 300 m² house in the USA (http://aceee.org/sites/default/files/pdf/conferences/hwf/2015/7C-Klein.pdf) shows an energy consumption of the loop of 10 to 20 KWh / Day, only to have hot water faster.
The water-saving faucet has the same appearance and functions as a conventional single-tap faucet, but it also has a cooled water outlet that allows access to hot water as fast as if you had Loop for recycling hot water installed, but without the least waste of water or energy.
The true ecological comfort is a mini looping rapidly actuated by the tap.
Several configurations of circuits are possible, for example a mini fast looping with automatic by-passes reduces the waiting time for hot water to a few seconds.
Thanks to the loopback via the shower head, you will enter the shower before opening the tap without risking to receive a single drop of cold water. (https://www.youtube.com/watch?v=l3iTB2x38Qs)
In summer the simultaneous operation of a hot water recirculation loop that acts as a radiator in the walls and an air conditioner that cools the room is an offense to the rational use of energy and should be prohibited in Public and private buildings.
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