Method for improving efficiency of Rankine cycle
AssigneeBeijing Cynertec Co., Ltd.
InventorZhen Wang
Life of this patent
Estimating the term…
Abstract
A method for improving the efficiency of a Rankine cycle by reducing cold end loss, comprising: for a Rankine cycle with a reheat-cycle, reducing temperature of reheat steam or removing a reheat steam system, and for a Rankine cycle with regenerative steam extraction-heat, reducing temperature of main steam and increasing humidity of main steam.
Claims20
A method for improving efficiency of a large Rankine cycle, comprising a heat source system, a steam turbine cycle system, and a cold end system, wherein, the steam turbine cycle system comprises a main steam system, a steam turbine system, a reheat steam system, and a shaft sealing steam system, wherein, the reheat steam system comprises a reheater, and the steam turbine system comprises a high-pressure cylinder, wherein the method comprises:
- S1000:
- adjusting an equipment state or operating condition of the heat source system or the steam turbine cycle system to reduce heat absorption of the reheater, so that a temperature of steam entering a steam turbine subsequent to the high-pressure cylinder is lower than a rated temperature of reheat steam to reduce cold end loss, thereby improving cycle thermal efficiency of the steam turbine.
A method for improving efficiency of a small Rankine cycle, comprising a heat source system, a steam turbine cycle system, and a cold end system, wherein, the steam turbine cycle system comprises a main steam system, a steam turbine system, a regenerative steam extraction system, and a shaft sealing steam system, wherein a working medium of a steam turbine is steam or another low boiling point medium, wherein the steam turbine system comprises a high-pressure cylinder, wherein the method comprises:
- S2000:
- adjusting an equipment state or operating condition of the heat source system or a steam turbine cycle system, reducing an enthalpy value of main steam, and increasing a proportion of regenerative extracted steam to reduce cold end loss, thereby increasing cycle thermal efficiency of the steam turbine.
Dependencies are inferred from the claim text.