By adopting a systems-engineering approach to design and implementing PURE Technology –  the result of a clean-slate design approach that combines new people with new skills bringing a new approach to the design and optimisation of heat transfer solutions – Fulton says its VSRT radically challenges the heat transfer and mechanical design principles of traditional steam boilers. It is also claimed by the company to be the most radical change to vertical steam boiler design since Fulton pioneered the vertical tubeless boiler in 1949. 

Commenting for Fulton, sales and marketing manager Leigh Bryan says: “To meet ever-more stringent industry and environmental standards, our PURE Technology approach looks to enhance heat transfer, provide class-leading efficiencies, improve steam quality and reduce NOx emissions. So rather than improve existing products to achieve these goals, PURE Technology radically challenges conventional boiler design by engineering solutions that are fit-for-purpose and applications.”

With over 15 patents pending in three continents, the VSRT’s spiral-rib heat exchanger is said to be a world first. Fulton says it attains industry-leading heat transfer rates thanks to its unique spiral design, which achieves low stack temperatures by passing the flue gases through a spiral-wound heat exchanger that is fully immersed in water. 

“This all-new spiral-rib design benefits from an extended heat transfer path and dual-direction heat flow, with the spiral annulus designed and optimised to create high heat transfer rates.” says Leigh. “This optimises heat transfer to create a longer-lasting boiler that we believe will beat the competition in every category of durability!”