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Reliable Gas Turbine Output: Attaining Temperature Independent Performance
Abstract
Improvements in gas turbine efficiency, coupled
with dropping gas prices, has made gas turbines a
popular choice of utilities to supply peaking as well as
base load power in the form of combined cycle power
plants. Today, because of the gas turbine's
compactness, low maintenance, and high levels of
availability, it is the major option for future power
generation.
One inherent disadvantage of gas turbines is the
degradation of output as the ambient air temperature
increases. This reduction in output during times of
peak load create a reliability concern as more gas
turbines are added to the electric system. A 10%
reduction in gas turbine output, when it comprises
only 10% of the electric system, does not cause
reliability concerns. A 10% reduction in gas turbine
output, when it comprises 50% of the electric system,
could create reliability and operational problems.
This paper explores the potential for maintaining
constant, reliable outputs from gas turbines by
cooling ambient air temperatures before the air is
used in the compressor section of the gas turbine.
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Citation
Neeley, J. E.; Patton, S.; Holder, F. (1992). Reliable Gas Turbine Output: Attaining Temperature Independent Performance. Energy Systems Laboratory (http://esl.eslwin.tamu.edu). Available electronically from https : / /hdl .handle .net /1969 .1 /92174.