MRO Magazine

Boiler heat recovery


May 31, 2010
By PEM Magazine

Boiler heat recovery products have evolved in response to customer and market demand attributed to economic challenges and environmental regulatory mandates. One such technological advancement is Cannon Boiler Works’ Feed Water Heaters, which provide a more energy efficient and cost effective solution, compared to traditional economizers, for process and manufacturing applications, according to the company.

Cannon’s Feedwater Heaters maximize exhaust stack heat recovery by recycling waste heat through a single-stage, two-stage, condensing economizer, or on-demand system. These can significantly increase operating efficiency up to 90 percent and lower overall fuel requirements and energy costs. By burning less fuel, this also results in reduced emissions and contributing to a cleaner environment.

Cannon Feedwater Heaters have an additional feature of being able to heat low-temperature make-up or process water as well as deaerated feedwater. The greater the input temperature difference, the higher the heat recovery.

Designed and standardized to be a cost-competitive system, Cannon Feedwater Heaters can be made entirely of stainless steel, and can be vertically or horizontally installed, with a minimal amount of modification, as a retrofit on existing high-pressure steam boilers in a range of sizes.


Cannon Feedwater Heaters are also repairable — not disposable. Unlike coiled units where the loss of a coiled tube means the loss of the unit, Cannon Feedwater Heaters contain a series of individual tubes, each one easily replaceable. Since Cannon manufactures its own finned tubing, customers can be assured of strict in-house quality control measures. By brazing helical-wound fin to the tube, Cannon produces a void-free, smooth profile without violating the tube.