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Refractory Blankets
Al Letellier
Member Posts: 781
Bruce, are you referring to the blanket on the floor of the combustion chamber?
If so, it's my understanding that it's there to provide a cooler point in the chamber area to improve circulation within the boiler block. Even some larger commercial boiler use a partial blanket or board to create that cool spot.
My feeling about them is that the R&D guys and engineers at eh boiler factory know more about it than I do, so if they built it with one, I make sure it stays there and get replaced when needed.
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If so, it's my understanding that it's there to provide a cooler point in the chamber area to improve circulation within the boiler block. Even some larger commercial boiler use a partial blanket or board to create that cool spot.
My feeling about them is that the R&D guys and engineers at eh boiler factory know more about it than I do, so if they built it with one, I make sure it stays there and get replaced when needed.
<A HREF="http://www.heatinghelp.com/getListed.cfm?id=248&Step=30">To Learn More About This Contractor, Click Here to Visit Their Ad in "Find A Contractor"</A>
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Comments
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Refractory Blankets
Anyone have comments on refractory blankets in oil fired boilers? Do they need to be replaced frequently? Indicative of poor design? Something to cause you to move to a non-blanket boiler?
It is my understand they are to serve as protection from the most intense heat of the burner.
Thanks!0 -
Bruce
blankets are used to protect the rear section of the boiler and keep the nozzle from getting to hot on shut down. A blanket should last 10-15 years easily on a properly fired and maintained boiler.0 -
Both Dave & Al
are correct with their explanations. Sometimes the blanket is damaged during service. Some boilers have designs making them more susceptible to damage than others. We consider the blanket a consumable item and replace them as necessary.
IMHO, I don't believe the cost of replacing the blanket, when necessary, justifies replacing the boiler.0
This discussion has been closed.
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