Discussion: “The Application of the Deviation Concept of Turbine Cycle Monitoring” (Hoffman, H. T., and Welch, C. P., 1961, ASME J. Eng. Power, 83, pp. 423–430)

Abstract

Secondary effects, primarily a change in H" play an important part when faults occur in the low-pressure turbine as indicated by the difference between the primary effect AHc and the true change in heat rate. This difference amounts to an error of 0.7 per cent in heat rate. It is therefore evident that secondary effects must be accounted for in this case. 4 Pacific Gas and Electric Company, San Francisco, Calif. Fellow ASME.