The analysis of the overdesign and the bypass design for the heat exchanger;

In the light of process operation and closed loop control, it is proposed that knowable overdesign includes three parts: process condition change overdesign (steady state), equipment aging (steady state) and the control overdesign (dynamic state).

Since there is no practical operation experience of 300 M W CFB boilers available in China, excessive margin in flow and pressure of air, accounting for 22% and 34.

The conception of margin is cited to analyze the constrained functions while getting the minimal results.

The problem of margin analysis and control design of FCC regenerator was solved through multi-objective mixed-integer dynamic optimization.

The design strategies of both rotor tip and stator hub forward-swepts were applied to improve the stage efficiency and stall margin.

In order to extend the stall margin of a centrifugal compressor with splitter blade,two different circumferential groove casing treatments were designed in this paper.

The numerical simulation of the performance of axial flow transonic compressor shows that compared to the baseline, the passage shock in the negatively curved rotor moves downstream near the tip, which improves the surge margin of the compressor while moving upstream near the midspan, increasing the energy loss there, so the compressor stage with negatively curved rotor has the lowest efficiency.