going to sounds dumb here but i'm still failing to comprehend the difference between more flow = good for a pc w/c system, & more flow = bad in condensate pre-heaters.
At the power plant all temperatures, pressures, flows etc where measured in triplicate & then voted by the control system so reliable data. With reduced flow we'd observe a) greater dt over pre-heater inlet /outlet & b) stack temperatures at the pre-heater level would reduce, i,e more stack heat absorbed into pre-heater water.
I'm no thermo wiz (v.basic grasp), but i see 2 instances of heat exchangers both with water in liquid state both behaving differently?
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