One effective way of recovering waste heat is through the use of a condensing economizer. In fact, by installing a condensing economizer over a traditional economizer, companies can improve overall heat recovery and steam system efficiency by up to 10%. The main difference between the two types of economizers is that condensing economizers operate where the temperature of the flue gases can be lowered enough to recover both sensible and latent heat. This results in additional heat recovered and potential savings.
Condensing Economizer Calculator 1
Use this calculator to get a general idea of the energy and cost savings associated with installing a condensing economizer on your boiler:2
Production Hours [hrs/yr]:
If your number is higher or lower than your gas usage, then adjust the Average loading [%].
There is enough heat in flue gases to heat up 190 [°F] of make up or process water at a rate of:
For a more accurate savings quote or to apply for our financial incentives:
Contact your Enbridge Gas Energy Solutions Consultant or email energyservices@enbridge.com
1. The calculated estimated savings are estimates only and not guaranteed by Enbridge Gas. The accuracy of this calculation is dependent upon the accuracy of the variables entered into the calculator and the relevancy of the assumptions used in the calculation to your specific facility (see assumptions below for details). For a more accurate savings estimate contact an Enbridge Gas Energy Solutions Consultant.
2. Assumptions: This assumes savings is for one boiler and it is based on a steam pressure of approximately 80-120 psi. Natural gas cost is estimated at $0.30m3.
