Drain Waste 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.

Drain waste heat recovery system.

Heat from the drain water is transferred to incoming water. Drain pipe and requires a vertical drain pipe length between fittings of 63 in. Thus it enters the water heater pre warmed and will take less heat energy and money to get it up to temperature. The power pipe drain water heat recovery system is an effective way to reduce water heating costs by 20 to 40 and continue saving throughout the entire building lifecycle.

The efficiency of your water heating system goes up and your water heating bill. Some of these devices may even store the water in a tank heating it while it is standby by flowing warm drain water in the bottom. Non storage systems usually have a copper heat exchanger that replaces a vertical section of a main waste drain. All residential r series units include matching drain connectors and connect easily to a 3 4 in.

Water heating accounts for approximately 20 to 30 percent of household energy demand. Drain water flows through a spiral tube at the bottom of the heat storage tank. Reduce costs and emissions in commercial establishments. This is a simple diagram of how a drain water heat recovery system works diagram courtesy of ecodrain.

Water heater intake water is preheated by circulation through a coil at the top of the tank. It works even better when the incoming fresh water is already warm. This warms the tank water which rises to the top. Horizontal drain water heat recovery dwhr system for main drain lines the ecodrain b1000 is the only drain water heat recovery system specificially designed for main drain lines.

In a gravity film heat exchanger gfx drain water flows through a copper pipe that is wrapped in smaller diameter copper tubing. It is the ideal solution for saving energy in single story homes homes built on crawl spaces and manufactured homes. With a drain water heat recovery system the cold water heading to the water heater first picks up some of that waste heat from the drain pipe.