COOLIDGE, Ga. — Hurst Boiler has announced 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 fire tube steam boilers, Hurst said its new counter-flow device improves boiler efficiency without increasing the heat transfer surface area and flue gas pressure drop through the boiler. The technology works as an economizer and aids in absorbing 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 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 3 percent, depending on working conditions.
Hurst said its streamlined, internal counter-flow device requires no external housing or support. As a result, boiler room costs can be further reduced by savings associated with installation, maintenance, and labor.
For more information on the new counter-flow device, click here.
Publication date: 7/7/2014