Drain Waste Heat Recovery System

Heat from the drain water is transferred to incoming water.

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. 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. All residential r series units include matching drain connectors and connect easily to a 3 4 in. 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.

Reduce costs and emissions in commercial establishments. How it works multi family applications. Water heater intake water is preheated by circulation through a coil at the top of the tank. It is the ideal solution for saving energy in single story homes homes built on crawl spaces and manufactured homes.

According to csa testing with the r3 60 performance is proportional to rated efficiency. This warms the tank water which rises to the top. It works even better when the incoming fresh water is already warm. Drain water flows through a spiral tube at the bottom of the heat storage tank.

Drain pipe and requires a vertical drain pipe length between fittings of 63 in. In a gravity film heat exchanger gfx drain water flows through a copper pipe that is wrapped in smaller diameter copper tubing. This is a simple diagram of how a drain water heat recovery system works diagram courtesy of ecodrain. Water heating accounts for approximately 20 to 30 percent of household energy demand.

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. A drain water heat recovery unit increases its heat potential the more drain water there is the system demands less energy. Non storage systems usually have a copper heat exchanger that replaces a vertical section of a main waste drain.