Exhaust gas economizers & waste heat recovery (WHR)
Exhaust gas economizers and waste heat recovery (WHR) systems play a critical role in improving the energy efficiency of modern vessels. By utilising heat from engine exhaust gases, these systems recover energy that would otherwise be lost, reducing fuel consumption and emissions.
At Global Boiler Services, we support shipowners and operators with inspection, repair, and optimisation of economizers and WHR systems across all vessel types..
What is an exhaust gas economizer / WHR system
An exhaust gas economizer captures heat from the main or auxiliary engine exhaust and transfers it to the boiler system, typically generating steam or preheating feedwater.
Waste heat recovery systems expand on this principle, integrating multiple heat sources to maximise energy efficiency onboard.
These systems are commonly installed on:
- Tankers
- Container vessels
- Bulk carriers
- Offshore units
Common challenges in economizers and WHR systems
Due to continuous exposure to exhaust gases and contaminants, these systems are subject to wear and fouling.
Typical issues include:
- Soot accumulation reducing heat transfer
- Corrosion and tube damage
- Blockages in gas passages
- Reduced steam production efficiency
- Risk of overheating or tube failure
Even minor contamination can significantly impact performance and increase fuel consumption.
Service and optimisation
Global Boiler Services provides complete support for economizers and WHR systems, including:
- Inspection of pressure parts and tube condition
- Mechanical and chemical cleaning
- Tube repair and replacement
- Performance optimisation and efficiency improvements
- Integration with boiler and control systems
Our services help restore heat transfer efficiency and ensure safe and reliable operation.
Reducing fuel consumption and emissions
Optimised WHR systems contribute directly to:
- Lower fuel consumption
- Reduced emissions
- Improved energy efficiency
- Compliance with environmental regulations
With increasing focus on efficiency and decarbonisation, maintaining WHR systems is more important than ever.
Looking to improve efficiency and reduce fuel consumption?
Contact Global Boiler Services for inspection, repair and optimisation of your economizer or waste heat recovery system.