Drain Water Heat Recovery Efficiency

Efficient drain water heat recovery in horizontal domestic shower drains 1.

Drain water heat recovery efficiency.

Dwhr systems operate on the principle of heat exchange between the incoming cold water supply. Drain water heat recovery to qualify as a drain water heat recovery system for use for compliance with applicable performance compliance credits the heat exchanging unit shall be certified to the energy commission according to the requirements contained in ra3 6 9 using the following declaration statement. Drain water heat recovery saves energy simple systems have speedy payback the energy department estimates that energy losses in hot water amount to 80 to 90 a good argument for installing a drain water heat recovery dhr system. You ll need a unit with storage capacity for use with a dishwasher or clothes washer.

Extend the life of your water heater since the cold water entering your water heater is pre heated by the drain water. A significant portion of the heat from the drainwater is. The well known international focus on energy sustainability and the impact of climate change has. By transferring some of the heat from the drain water to the incoming water through a heat exchanger reduced energy is required.

Drain water heat exchangers can recover heat from the hot water used in showers bathtubs sinks dishwashers and clothes washers. Benefits energy savings a typical drain water heat recovery system can reduce your water heater s energy consumption by up to 25.