Economy Characteristics of Stage Feedwater Heating by Extraction: Practical Computation and Maximum Realization of Extraction Gains for Power Plants of Present Trend in Design

Feedwater heating by extraction from the main unit, becoming increasingly important with rising steam pressures, complicates the computation of heat balance. The authors point out the influence of each possible factor in the computations, present a practical method for computing extraction cycles, and deal with various factors affecting turbine-room economy, these being more particularly enumerated in the first three paragraphs of the paper.