System & Technical Solution

A ShowerPipe vertical shower heat recovery unit was installed in the house. The system captures heat from the outgoing shower water and transfers it to the incoming cold water supply.

During operation, the heat recovery unit quickly increases the temperature of the incoming water.

Measurements show that:

• Incoming cold water initially enters at approximately 6°C

• After only a few seconds of operation, the preheated water temperature reaches around 26°C

This significantly reduces the energy required to heat water to the desired shower temperature.

The combination of system changes significantly improved overall energy efficiency.

The total electricity consumption for hot water production in the house was reduced by a factor of 2.7.

Energy savings were achieved through several factors:

• 40% from eliminating storage and distribution losses

• 15% from reducing shower flow rate

• 43% from heat recovery using the ShowerPipe system

The passive heat recovery system recovers a large share of the thermal energy that would otherwise be lost through wastewater