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Feedwater Heater Heat Transfer. Richard Galati Brent Smith Justin Pierce. Overview. Intermountain Power Plant Provides power to Los Angeles 2 Generator Units 950MW output each 1900MW Total Output Proposed 3 rd unit will make it the 13 th largest generating station in the US.
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Feedwater Heater Heat Transfer Richard Galati Brent Smith Justin Pierce
Overview • Intermountain Power Plant • Provides power to Los Angeles • 2 Generator Units • 950MW output each • 1900MW Total Output • Proposed 3rd unit will make it the 13th largest generating station in the US
Overview • Feedwater Heater • Condenses steam • Preheats water before entering boiler • Increases efficiency and total BTU output
Heat Transfer • Finding Heat Transfer • Variables Provided by Manufacturer • Un - Stage Thermal Resistance • An - Stage Area • Log Mean Temperature Difference • All temperature values provided from instrumentation on feedwater heater
Heat Transfer • Q for each stage is calculated • De-Superheating • Condensing • Drain Cooling • Qtot = Qds + Qc + Qdc • Results compared with projected data from manufacturer
Conclusions • Qtot, predicted = 161.91x106 BTU/hr • Qtot, actual = 144.5x106 BTU/hr • Difference = 17.41x106 BTU/hr • Why: • 20 years of use • Increase of Flow Rate • Other…