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Investigating the Impact of Boiler Aging in Replacement Decisions

Panel: Panel 2. Energy-Saving Technologies and Practices

Siddika Pasi, Center for Advanced Energy Systems, Rutgers University
Michael Muller, Center for Advanced Energy Systems, Rutgers University


Traditionally boilers were believed to operate efficiently for fifteen to twenty years at the end of which they are typically replaced.  When it is time for replacement, one primary aspect most often considered is simply the age of the boiler and its impact on the boiler efficiency.  This paper will discuss the result of the investigation that proves more variables are to be considered than just the age of the boiler when deciding to replace boilers.  The investigation includes effect of maintenance, operation hours, feed water treatment and sizing of boilers on its performance.  Maintenance of boilers includes cleaning and replacing metal parts in the boiler such as water tubes, regular inspection of metals for deterioration and routine tune up of the boilers.  The impact of good maintenance on boiler will not only improve performance but also extend the life of the boiler.  The proper sizing of a boiler is also a key issue when considering a replacement.    If a boiler is undersized or oversized, then replacing it with a proper sized boiler is a sensible alternative.  Factors such as feed water systems and their impact on boiler performance will be considered in this investigation.  It will be established that the relationship between the age of the boiler and the efficiency of the system is highly dependent on the various above-mentioned variables.


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