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Posted by Heatpro on May 21, 2006 at 11:23:04:
In Reply to: Re: copper tube boiler groaning/vibrating posted by Dave on May 21, 2006 at 08:56:24:
While the TD is zero in the total water flow, it is not unusual to have high water temperatures in one or more tubing rows within the boiler to groan. The hotter water mixes again in the general stream so isn't detected. That tube's water temperature is close enough to boiling to groan. Raising the pressure raises the boiling point out of the range .
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