Finned tubes

Green’s is a world leader in the design, manufacture and installation of economisers and waste heat recovery systems. Our founder Edward Green patented the first fuel economiser in 1845. Since then, we have been combining innovation and engineering expertise to help companies around the world reduce emissions, improve efficiency and save money.

Energy, industrial and marine sectors

Reduce emissions, improve efficiency and save money

Green’s Steel H fins bring significant benefits to waste heat recovery installations:
  • Compact design – fewer tubes are required, reducing capital investment
  • Reduced operating costs – the need fans and pumps is reduced by the reduction in pressure losses
  • Steam/water heated more quickly – around 9 times more heating surface
  • Fouling is kept to a minimum –  straight paths through the whole tube bank
  • Boiler downtime kept to a minimum – maintenance requirements are minimal
Benefits of Green’s steel H fin economisers vs plain tube economisers when used in a 274MW boiler:
Plain tube economiser
Steel H fin tube economiser
Number of rows
446 tonnes
240 tonnes
Green’s has tooling available for over 40 fin shapes and sizes and can produce other customised fin shapes if required.

Spiral finned tubes

Where heat recovery equipment is used in clean environments such as with natural gas or light oil fired units or for preheating of combustion air, we often recommend spiral finned tubes. This gives an even greater surface area which leads to increased waste heat recovery for use in other applications. Spiral finned tubes can be fabricated with solid or serrated profiles.

Cast iron tubes

For low temperature applications prone to acid dew point corrosion we can design cast iron economisers.  We offer a range of types including round or square fins such as Foster, Type 55 and Type 25. They are most commonly used primarily in  sulphuric acid, chemical, fertiliser and waste to energy plants.

You can download a brochure that provides an overiew of what we do and who we do it for here.

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    Customers who benefit from using Green’s economisers include: