Furnace Exhaust Heat Recovery

It is a gas to gas heat exchanger placed on the stack of the furnace that preheats incoming air with exhaust gas.

Furnace exhaust heat recovery.

The recovered energy reduces the net power consumption allowing significant co 2 reduction. This unit is equipped with a heat recovery core specifically designed to reduce ventilation costs by recovering the heat energy from the exhaust air and using that same heat energy to warm the fresh air being supplied. Use of regenerative burners for reheating furnaces can provide significant energy savings. A recuperator is the most widely used heat recovery device.

The heat recovery system is connected to the off gas treatment system of the melting electric furnace. A regenerative burner is with a heat recovery system that recovers the waste heat of the furnace exhaust gas to heat up the combustion air needed for the burning of the fuel at the burner. I know they sell heat recovery units for wood stoves with a 6 pipe i wonder if i could use one of those with my gas appiances. Waste heat recovery elevates furnace efficiency to higher levels because it extracts energy from the exhaust gases and recycles it to the process.

Designs rely on tubes or plates to transfer heat from the exhaust gas to the combustion air and keep the streams from mixing. In some cases such as industrial furnaces efficiency improvements resulting from waste heat recovery can improve energy efficiency by 10 to as much as 50. Captured and reused waste heat is an emission free substitute for costly purchased fuels or electricity. This heat recovery process is accomplished in such a way that the stale air is never mixed with the fresh air.

Significant efficiency improvements can be made even on furnaces that operate with properly tuned ratio and temperature controls. There are four widely used methods.