Abstract
Optimization of an intercooled reheat regenerative gas turbine power plant combined(ICRHR) is presented in this chapter. The plant consists of eight components, namely LPand HP compressors; intercooler; regenerator; combustor; HP and LP turbines; andreheater. Optimum pressure ratios across the compressors and the turbines aredetermined. Explicit relationships are derived for the net work and the thermal efficiencyof the plant through thermodynamic models of the components, which are expressed asfunctions of total pressure drop within the cycle, ratio of maximum temperature tominimum temperature of the cycle, efficiencies of the turbines and the compressors,regenerator effectiveness, and overall pressure ratio of the system. It is shown that themaximum thermal efficiency design has the advantages of a higher efficiency, loweremissions, and smaller sizes of turbines and compressors, compared to the maximumwork design. Hence, the optimization of the power cycle is carried out by maximizing thethermal efficiency with respect to the overall pressure ratio. The results are presented forthe optimal pressure ratio and the corresponding maximum efficiency and the workoutput versus the ratio of the highest-to-lowest temperatures and the pressure drop factor.Also, a typical comparison is made between the optimum design points of a regenerativegas turbine engine (RGT) and ICRHR cycle in terms of the optimum pressure ratio,optimal thermal efficiency and the corresponding work output under identical conditions.
| Original language | English |
|---|---|
| Title of host publication | Gas Turbines |
| Subtitle of host publication | Technology, Efficiency and Performance |
| Publisher | Nova Science Publishers, Inc. |
| Pages | 71-88 |
| Number of pages | 18 |
| ISBN (Print) | 9781611228427 |
| State | Published - 2011 |