Built-in Non-Condensing Economizers
In a boiler, the flue gas is the heated gas that exits the boiler via an exit duct known as the flue. The escaping hot gas is a site of heat loss in the boiler system. Non-condensing economizers work through a basic heat exchange process. They consist of a heat exchange mechanism situated in the flue and are usually finned coils or tubes. As the hot exhaust gases pass across the heat exchange mechanism, heat transfers to the coiled mechanism. The recaptured heat increases the feedwater temperature entering the boiler. As the captured energy heats the feedwater, less fuel is needed to heat the water to the required boiling temperature.
Non-condensing economizers do not lower the flue gas temperature to below its acid dew point (the temperature, at a given pressure, at which gaseous acids such as SO2 in the flue/exhaust gas will start to condense into liquid acid). Depending on the boiler’s fuel, the resulting condensation can contain particles capable of corroding the flue. Keeping the temperature above the condensation point avoids the problem of potentially corrosive compounds.
Monitoring & Controls
The key to successful boiler monitoring and control is a clear view of not only your equipment but of your business style. Are you in the boiler room daily to check levels? Do you need to have a remote view of your system? What is the hourly, or daily draw on your system? The overall quality of your water? Getting a true handle on your system can guide you to exactly what types of monitoring and control tools you need to employ. From Our BP control panels, Miura Online Mont=itoring, Water Treatment Monitoring &