Fire Tube Boilers
Sellers Fire tube boilers were originally designed to solve the problems that are inherent to the traditional scotch marine boiler design. All firetube boilers distribute energy through a collection of water-backed tubes to enable heat transfer. The Sellers Boiler is innovative in how it distributes that energy at the point of combustion, rather than a turnaround chamber. Uniform application of combustion energy eliminates thermal shock and allows relief of any possible energy buildup in the vessel through a rear relief door, which is unique in the industry.
In a traditional Scotch Marine Boiler, by contrast, 100% of the combustion energy feeds into the furnace. Because of its design flaws, the scotch marine boiler still presents the risk of thermal shock, resulting in a myriad of associated issues that will ultimately require significant maintenance and loss of operation time.
The Sellers Fire Tube Boiler Design
Fire Tube Boiler Types
Sellers offers more than one type of fire tube boiler because we understand that different customers have different needs. But despite the differences, each of our boilers comes with the same first-rate quality that Sellers customers have come to expect. Explore our variety of options, including single-pass, two-pass, and three-pass designs.
Sellers Fire Tube Boiler Advantages
Radiant Heat
The most efficient heat transfer occurs where the combustion in the fire-tubes touch the water in the vessel. This is known as the radiant heat of combustion. The Sellers single pass boiler has significantly more radiant heat transfer than a Scotch Marine, with up to 50% of each fire-tube in a Sellers boiler touching the fire, while only the furnace is subject to radiant heat transfer in a scotch marine boiler.
S-SERIES TRIM
X-SERIES TRIM
H-SERIES TRIM
The reason a customer might prefer one of our two-pass fire tube boilers instead of a single-pass boiler is that our two-pass boiler systems are designed explicitly for tighter space constraints. This optimal piece of equipment offers the small footprint application capacity you need while still providing Sellers-level quality.
Ygnis fire tube boilers are used exclusively for oil burning applications. Even though this design has a more limited applicability than our single-pass & two-pass fire tube boilers, Sellers is committed to providing a boiler for every specific need our customers face.
