Drain Water Heat Recovery System

Heat from the drain water is transferred to incoming water.

Drain water heat recovery system. 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. The power pipe will typically pay for itself in as little as 2 years and may qualify for government or utility grants. Heat exchangers are made from solid copper so they are durable and there are no moving parts to wear out. This process can be used for your home apartment condo business or many industrial processes using heated water.

It works by using outgoing warm drain water to pre heat incoming cold fresh water so your water heater doesn t have to work as hard. The power pipe can dramatically cut water heating costs and reduce total home energy consumption by 5 10. Drain water heat recovery is the process of recovering part of this valuable energy from the warm water and using it to preheat your incoming cold fresh water. They generally have the ability to store recovered heat for later use.

It s particularly effective when there are simultaneous water flows i e. In a gravity film heat exchanger gfx drain water flows through a copper pipe that is wrapped in smaller diameter copper tubing. This is achieved by a variety of systems called drain water heat recovery dwhr. Drain water heat exchangers can recover heat from the hot water used in showers bathtubs sinks dishwashers and clothes washers.

Drain water heat recovery technology works well with all types of water heaters especially with demand and solar water heaters.