Economisers & Flue Gas Coolers

Overview

Economisers recover waste heat from boiler flue gas and transfer it to boiler feedwater, increasing feedwater temperature and reducing the energy required to achieve rated output.

Flue gas coolers perform a similar function, using recovered heat for other plant applications to improve overall plant efficiency and heat recovery performance.

To ensure long-term reliability, we carefully select materials suited to demanding operating conditions, helping maintain durability, efficiency and performance over time.

Global Expertise

With over 175 years of experience in the design and manufacture of economisers, we bring unmatched expertise and proven engineering capability to every project.

We have supplied economisers to clients worldwide, delivering solutions that maximise energy recovery, improve efficiency and meet the specific needs of each facility.

Our team combines deep engineering knowledge with rigorous testing and quality standards to ensure reliable, long-term performance across demanding industrial applications and operating environments.

Specifications

These units are designed for easy installation using mobile cranes and are typically constructed to EN or ASME standards with the following specifications:

Water Pressure: 10–320 bar
Water Flowrate: 10–2800 t/h
Thermal Duty: 1–100 MW
Tube Length: Up to 20m
Module Size (WxLxH): From 1m x 3m x 1m to 6m x 20m x 4m
Module Weight: 15–150 tonnes

We design and manufacture economisers and flue gas coolers as fully assembled units, including casings and headers, tailored for seamless integration into new-build projects.

Coils

Our team can design and manufacture replacement coils with customised tube pitch and fin configurations, ensuring full compatibility with existing casings and minimal disruption during installation.

These solutions are typically required when tubes need replacement due to failure or when a redesign is needed to improve performance and heat recovery.

We supply both single and double economiser coils, engineered for seamless installation into existing casings on-site, helping to reduce downtime and restore long-term operational performance.