HeatSpongeby Boilerroom Equipment, Inc.

Bruce / ATLAS-class selection

Large boilers.
Serviceable heat recovery.

For large industrial and small utility steam boilers, ATLAS brings the external, maintainable HeatSponge approach to economizer selection. Enter operating conditions to evaluate the duty and target outlet temperature.

Start selection Discuss a custom application
Industrial boiler room installation
Have these readyBoiler make and capacityFeedwater temperatureFlue-gas temperature at full loadTarget exhaust temperature

ATLAS-class industrial economizer

Build your selection.

Begin with boiler and exhaust conditions. Open specialized options when you have verified project data.

01

Boiler basics

ATLAS is intended primarily for very large industrial boilers. Enter the boiler capacity and the actual water temperature at the proposed economizer inlet.

02

Operating profile

Full-load flue-gas temperature is required. Leave temperatures at other loads blank if you want Bruce to calculate them; enter annual hours and excess air for each firing condition.

Firing loadGas inlet tempHours/yearExcess air %
Firing load100%
Firing load
Firing load
Firing load
FGR takeoff location
03

Design target

Specify a target flue-gas exit temperature if the project has one. If blank, Bruce uses a midpoint between flue-gas inlet and water inlet temperatures.

Fin spacing and construction

Select a base configuration by fuel and water conditions. Final tube and fin materials require engineering review, including stainless-tube options.

Bruce estimates performance and configuration. Confirm boiler fan limits, water-side conditions and installation constraints before purchase.

For verified project data

Optional engineering inputs

Leave standard defaults in place if these details are not known.

01 / Custom water circuitFlow and fluid properties

Enter a custom flow only when the circuit differs from boiler feedwater flow. For a conventional feedwater economizer, Bruce calculates the flow from the boiler capacity.

02 / Professional overridesGas-side backpressure and custom flow

Use only when the boiler’s allowable gas-side backpressure and exhaust flow are documented. A printed selection does not establish boiler compatibility.

Automatic selection

Bruce estimates performance and configuration. Confirm boiler fan limits, water-side conditions and installation constraints before purchase.