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Method for obtaining furnace thermal efficiency

A boiler thermal efficiency and acquisition method technology, applied in the field of boiler thermal performance calculation, can solve problems such as inability to effectively solve boiler coal quality data, inability to achieve real-time and accuracy, and lack of technical conditions for online detection

Active Publication Date: 2017-06-13
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +3
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Problems solved by technology

When calculating the combustion energy, it is necessary to know the calorific value of the fuel, which usually requires sampling and analysis, and it is difficult to achieve real-time performance for the complex and changeable coal quality of the boiler
[0005] In the existing technology, it is often impossible to effectively solve the problem of coal quality data input to the boiler, or the technical conditions for online detection are not available, so the calculation of the thermal efficiency of the boiler is usually unable to achieve real-time and accurate

Method used

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  • Method for obtaining furnace thermal efficiency
  • Method for obtaining furnace thermal efficiency

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Embodiment Construction

[0068] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0069] The core of the present invention is to provide a boiler efficiency acquisition method, the acquisition process of which does not involve the acquisition of coal quality, and is convenient and accurate.

[0070] A method for obtaining boiler thermal efficiency provided by the present invention includes: obtaining effective output heat and total output heat of the boiler, and obtaining the thermal efficiency of the boiler according to the effective output...

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Abstract

The invention discloses a method for obtaining furnace thermal efficiency. The method comprises the steps of obtaining effective output heat and total output heat of a furnace, and obtaining the furnace thermal efficiency according to the effective output heat and the total output heat. In the method, the according to the obtained effective output heat and the total output heat, the furnace thermal efficiency is obtained, the furnace thermal efficiency can be obtained without a coal quality test, and the method makes it convenient to obtain the furnace thermal efficiency and satisfies the real-time performance and the accuracy.

Description

technical field [0001] The invention relates to the technical field of boiler thermal performance calculation, and more specifically, relates to a method for obtaining boiler thermal efficiency. Background technique [0002] Most of the heat sent by the fuel into the boiler is absorbed by the heating surface of the boiler to generate water vapor, which is the effective heat to be used, while the other part of the heat is lost, which is usually called heat loss. [0003] Usually, the calculation method of boiler thermal efficiency is divided into input-output heat method thermal efficiency (also known as positive balance method) and heat loss method thermal efficiency (also known as inverse balance method). [0004] In actual design and calculation, regardless of positive balance or reverse balance calculation, the common point is that the input heat of the boiler needs to be known, and the most important input heat is the combustion energy input by the fuel. Calculating the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00F24H9/2057F22B35/18G01M99/002G05B23/02G01N25/005G06F11/30F24H15/144
Inventor 吕洪坤
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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