Hurst Boiler improving boiler efficiency

June 27, 2014, Coolidge, Ga. – Hurst Boiler has announced
the patent approval for its new counter-flow device designed to improve boiler
efficiency. Integrated inside of the pressure vessel, Hurst’s optional
counter-flow device is factory-built into the company’s Thermal Master
Counter-Flow Boiler Series and can be added to any of Hurst’s packaged Scotch
Marine and Euro Series boilers, depending on desired efficiency requirements.

Representing a new concept in the design of conventional
fire tube steam boilers, Hurst’s new counter-flow device improves boiler
efficiency without increasing the heat transfer surface area and flue gas
pressure drop through the boiler. Hurst’s advanced technology and engineering
works as an economizer and aids to absorb more heat from exhaust gases by
utilizing feedwater potential in a unique water-to-flue gas counter-flow
design.

Performing the same function as a traditional external
economizer typically used with conventional steam generation systems, Hurst’s
patented internal counter-flow device captures the lost or waste heat from the
hot flue and stack gasses of the boiler. In accordance with patent approval,
calculations were performed by computer model of Hurst’s counter-flow boiler
under typical conditions. Relative to other boilers having traditional designs,
tests determined that the device improves boiler efficiency by as much as three
per cent, depending on working conditions.

Unlike the bulky assembly of a typical external economizer
that has separate housing and ductwork in addition to the boiler housing,
Hurst’s streamlined, internal counter-flow device requires no external housing
or support. As a result, boiler room costs can also be further reduced by
savings associated with installation, maintenance and labour.