🔥 Flue Gas Heat Recovery (3% to 5% Boiler Fuel Savings, Finned Tube Exchangers)

Boiler Flue Gas Economizer Calculator

Size finned-tube feedwater economizers installed in industrial boiler exhaust stacks to preheat boiler make-up water: calculate flue gas temperature drop (cooling exhaust from 450°F down to 280°F while staying safely above the sulfur acid dewpoint), calculate continuous 3% to 5% boiler natural gas fuel savings, and boiler retrofit margins.

1. Project & Operating Inputs

Boiler Rating (Boiler Horsepower - BHP e.g. 600 BHP Industrial Boiler)

Annual Operating Hours (Hours / Year e.g. 7,200 Operating Hours)

Turnkey Finned-Tube Economizer Installation CapEx ($ e.g. $85,000)

Natural Gas Fuel Rate ($ / MMBTU e.g. $7.50 / MMBTU Gas)

2. Financial Breakdown & Yield

BOILER FLUE GAS ECONOMIZERS

5-Year Natural Gas Fuel Dollar Savings

Boiler Economizer Retrofit ROI

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost