18-04-2019 дата публикации
Номер: US20190113417A1
Принадлежит:
The present invention discloses a method for acquiring thermal efficiency of a boiler, comprising: acquiring effective output heat and total output heat of the boiler, and obtaining the thermal efficiency of the boiler according to the effective output heat and total output heat. In the method provided by the present invention, by acquiring the thermal efficiency of the boiler according to the obtained effective output heat and total output heat, the thermal efficiency of the boiler can be acquired without performing coal quality testing, thus the thermal efficiency of the boiler is conveniently obtained, and the real-time capability and accuracy are satisfied. 1. A method for acquiring thermal efficiency of a boiler , wherein the method for acquiring the thermal efficiency of the boiler comprises: acquiring effective output heat and total output heat of the boiler , and obtaining the thermal efficiency of the boiler according to the effective output heat and total output heat.4. The method for acquiring the thermal efficiency of the boiler according to claim 2 , wherein the step of acquiring the heat Qabsorbed by reheated steam comprises:{'sub': zqj', 'zjw', 'zqc', 'zqj', 'zjw', 'zq, 'claim-text': {'br': None, 'i': Q', 'D', '+D', 'h', '−D', 'h', '−D', 'h, 'sub': zq', 'zqj', 'zjw', 'zqc', 'zqj', 'zqj', 'zjw', 'zjw, '=()'}, 'acquiring a flow Dof steam at an inlet of a reheater, an amount Dof desuperheating water injected into a water side of the reheater, an enthalpy value hof steam at an outlet of the reheater, an enthalpy value hof steam at the inlet of the reheater and an enthalpy value hof desuperheating water of the reheater, and calculating the heat Qabsorbed by reheated steam according to the following formula{'sub': zqj', 'zjw', 'zqc', 'zqj', 'zjw, 'where Dis the flow of steam at the inlet of the reheater, Dis the amount of desuperheating water injected into the water side of the reheater, his the enthalpy value of steam at the outlet of the reheater, his the ...
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