High efficient steam bottoming cycle is indispensable for high efficient combined cycles. This paper proposed a transshipment model for cascade utilization of the exhaust heat of gas turbine. The model took into consideration the requirements and limits by combined cycle, design condition, control, heat transfer, etc.. The model can be easily integrated with other processes to be suitable for the more complicated combined cycles. The flowsheet and parameters of high efficient steam b0ttoming cycle can be generated aut0matically by combining the transshipment model with linear or nonlinear optimization algorithm.
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