Hi Ken
On (03 Feb 98) Ken Orris wrote to Alec Cameron...
 KO> Not to be picky, but, economisers are horizontal banks of tubes
 KO> installed in the stack breaching to preheat the water coming
 KO> from the condensers, going to the feedwater heater. 
Yes.
 KO> What you describe is an air heater, which is a wheel with sheets
 KO> of wavy metal in a pie sections that get heated from the flue
 KO> gas (after the economizer) and as it turns heats the intake air
 KO> from the forced air fans.
Yes again. I retired from the business in 1987. It's amazing how much I have
managed to forget!
Thanks for putting the facts right. In one of our departments a guy was
regularly muddled about NPS. Negative Phase Sequence heating was on his
work schedule at the same time as Net Positive Suction head calcs. I can till
see old Max, smiting his forehead trying to stimulate the grey matter!
Cheers.....ALEC
... Alzheimer's......... New Friends Every Day
--- PPoint 1.92
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