Abstract:

The 350MW supercritical steam turbine is the main type for domestic large heating unit at present, and there is a constant dispute whether its economy could be improved by increasing steam parameters to ultrasupercritical parameters. Combining the analysis conclusions of turbine plants, this paper analyzed the technical feasibility of 350MW heating unit using ultrasupercritical parameters, the rationality of initial parameters selection and the economy of equipment investment and operation cost. And provided a reference for the reasonable ultrasupercritical parameters selection of 350MW unit.

Key words:

350MW unit, ultrasupercritical, economy