Economic Research On (Super) Supercritical Unit Of Different Choice Of Initial Steam Parameters

Increasing the units'steam initial property, developing the supercritical unit, We can increase units'thermo-economy. Select steam initial temperature from 535℃to 660℃, and initial pressure form16 MPa to 34 MPa, We choose 494 sets of different steam properties in the selected sphere. Making the 494 sets of parameters basing points, We program and analyze how ideal cycle efficiency and relative cycle efficiency and absolute cycle efficiency vary with steam initial properties .Steam properties increasing, coal consumption and flue gas emission reduce, including harmful gas such as SO₂,NO_X.We make some calculation on environmental protection profit by raising units'steam properties. On the other hand, both metal material and investment have some influence on steam properties, We should make synthesis compare between thermo-economy and technical economy at first ,only do this we can make the best choice.