D-SPACE
An Original Recirculation System for Combustion Exhaust Gas
Putting exhaust heat — once simply released through the flue — to work inside the furnace.
D-SPACE, our exhaust heat recovery melting furnace, was developed in-house and is protected by an international patent.
The D-SPACE system is a hybrid system that can be installed on our SEH, SER, and LCM furnaces.
What Is the Exhaust Heat Recovery System?
Recirculating High-Temperature Exhaust Heat Inside the Furnace
The system recirculates the 500–700°C combustion exhaust heat that was previously released outside the furnace. Employing the venturi principle, it achieves remarkably efficient heat recovery and boosts combustion efficiency.
How the System Works(3 Steps)
Heat Exchange
Air fed to the venturi tube exchanges heat with the sensible heat of the refractory in a loop at the top of the furnace. Exhaust heat from the heat-exchange burner can also be utilized.
Suction
The preheated air is then used to draw in the combustion exhaust gas.
Recirculation
The drawn-in exhaust gas is returned to the area around the melting burner and recirculated through the furnace.
Three Benefits
Lower Specific Energy Consumption
Reusing exhaust heat inside the furnace improves the energy efficiency of the melting process.
Energy Savings
Recirculating high-temperature exhaust heat makes the most of the energy used for combustion.
CO2 Reduction
Improved combustion efficiency helps lower environmental impact.