A Zantingh flue gas condenser is installed between the boiler and the chimney. The condenser recovers heat from the flue gases of natural gas-fired overpressure boilers. This reduces gas consumption and increases the efficiency of your heating installation.
At low return water temperatures, we bring the flue gases below the dew point of approximately 58 degrees Celsius. As a result, not only is the sensible heat utilized, but also the latent heat released during condensation. This ensures maximum thermal efficiency.
A Zantingh flue gas condenser extracts heat from flue gases with high efficiency while remaining practical in use. We calculate the heating surface based on the flue gas flow of your boiler, ensuring that heat is properly transferred to the return water. The vertical exchanger design limits fouling and keeps maintenance straightforward. Stainless steel in the exchanger block and the casing makes the condenser suitable for long-term use under demanding conditions. Additionally, we supply the condenser complete with the components required for monitoring, safety, and installation. This provides you with an installation that performs as required and aligns with the operation of your boiler house.
Application
Natural gas-fired overpressure boilers
Capacity range
Up to approximately 20 MW
Maximum flue gas temperature
240 degrees Celsius
Maximum water temperature
90 degrees Celsius
Operating pressure
Standard 3 bar, optional 6 bar
Flue gas inlet
Square flange
Flue gas outlet
Round connection
Exchanger position
Vertical
The condenser has a compact design and is supplied with adjustable feet for placement in the boiler house. Inspection hatches allow for monitoring and cleaning. This ensures the flue gas condenser remains accessible for maintenance and the installation continues to perform as required.
Read more about our serviceHighlight project
Find your specialist here to assist you further.
The vertical placement of the exchanger block helps to limit fouling. The condensate runs down the exchanger surface, carrying away impurities. Consequently, the condenser continues to function well and maintenance remains manageable.
The compact design requires little space in the boiler house. Inspection hatches allow for monitoring and cleaning, both on the flue gas side and the water side.
A flue gas condenser deals with condensate. Therefore, Zantingh uses stainless steel in the tubes of the exchanger block and in the entire casing. This makes the condenser resistant to aggressive condensate and suitable for long-term use behind natural gas-fired boilers, even under demanding conditions.
A Zantingh flue gas condenser is delivered complete with the components necessary for monitoring, safety, and installation. This includes inlet and outlet thermometers for flue gas and water, a high-limit thermostat, a flue gas-side pressure switch, a pressure relief valve for water-side safety, a limit switch on the flue gas damper, air vents, drains, and adjustable feet for placement and mounting.
The flue gas condenser can be equipped with an integrated changeover valve and a bypass duct. This allows the flue gas flow to be directed based on the operating situation. When firing on oil, the flue gas can be discharged via the bypass.
A servo drive is available for automatic valve control. Baffles can also be adjusted for high and low water flows, ensuring the condenser matches the operation of the installation.
Zantingh flue gas condensers are suitable for closed central heating systems. A condensate trap prevents flue gas leakage through the condensate drain.
The safety features of the condenser can be integrated into the burner’s safety circuit. This ensures the burner is only released when the condenser and its associated safety devices are in the correct operating state. The condenser is equipped with pressure and temperature protection.
Interested in maximum heat recovery with minimal losses?
Contact us