Waste Heat Boiler Circulating Water System

With this option an additional pipe that is designated for hot water is installed in your home s plumbing.

Waste heat boiler circulating water system. Two types of recirculating pumps option 1 full recirculating pump system. This is a very efficient system because one heat source is doing all the work. The open system heater to provide both floor heating and domestic hot water. Boiler circulation problems troubleshooting hydronic water loops richard we have a hot water boiler and we are having problems with the circulation of the water.

A hot water recirculating pump is installed on your water heater returning unused hot water back to the water heater. The same water that ends up in your hot shower or dishwasher for example has passed through the floor first. The two systems are basically tied together. Selection and operation of the boiler s in relation to the other system components and in support of the design intent are important considerations.

Using either pumps or natural convection in a passive system recirculation systems advance the flow of hot water from your boiler or water heater through your home and back to the heat source. The pump pressurizes the hot side of the systems and through the bypass valve under the sink it pushes the hot water into the cold water system creating a hot loop. The counterflow principle is applied i e the hottest exhaust gasses meet the heated feed water. With the recirculation system off the burner comes on every 5 hours for 5 1 minutes.

Evaporator section of the waste heat recovery boiler water evaporates and emulsion of steam and water flows back to the boiler. System flexibility maximum efficiency heating cooling domestic hot water heat storage fuel capability etc. It is designed to provide hot water on demand. The boiler seems to be working fine but the radiators are cool.

Inside this type of boiler there are narrower tubes than inside a fire tube boiler and the tubes contain water instead of hot gases. I estimated the energy waste for recirculation by measuring the amount of energy my gas water heater uses with and without the recirculation loop enabled. With the recirculation system on the gas burner comes on every 1 25 hours for 5 1 minutes. The radiators are cool and we don t seem to have good heat.

Rheem s prestige high efficiency liquid propane combi boiler rheem s prestige high efficiency liquid propane combi boiler provides an efficient continuous supply of domestic hot water used for faucets showers washing machines etc and provides hydronic space heating for residential applications such radiant floors baseboards hydronic air handlers etc. For this configuration the pump is located above the water heater and a check valve is located under the sink furthest away from the hot water heater.