Theoretical Analysis And Application Of Thermodynamic System In Power Plant Based On Matrix Method

In power plant, energy conservation becomes more and more important. So it is necessary to increase accuracy and versatility of the thermodynamic system analysis method. Based on the matrix method, two mathematical models influenced by each extraction steam pressure loss and terminal temperature difference on thermal economy of unit are established. The characteristics influenced by extraction steam pressure loss and terminal temperature difference on thermal economy are analyzed by each model. Both the equations of heat rate transformation coefficient and steam rate transformation coefficient of thermodynamic system for power unit with double reheat are derived. Then the characteristics of power unit with double reheat are analyzed. Under the condition of constant power output, two calculation models on the influence each of extraction steam pressure loss and terminal temperature difference on thermal economy of unit are also established. Through the calculation by these models, the results indicate that when extraction steam pressure loss or terminal temperature difference increase, the thermal economy fall. Compared with the old methods, the models have more versatility and terse formats.