Fuel oil condensing boiler reverse-balancing heat efficient measuring method

A measuring method and technology of thermal efficiency, which are applied in the field of measuring the reverse balance thermal efficiency of oil-fired condensing boilers, and can solve problems such as lack of

Inactive Publication Date: 2005-02-23
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, a large number of condensing boilers from abroad have begun to pour into the domestic market, and some domestic companies have also begun to design and develop condensing boilers, but there is currently a lack of a calculation model and calculation model for calculating and testing the thermal performance (thermal efficiency) of fuel (or gas) condensing boilers. Test method, the significance of the present invention is to fill this technical g

Method used

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  • Fuel oil condensing boiler reverse-balancing heat efficient measuring method
  • Fuel oil condensing boiler reverse-balancing heat efficient measuring method
  • Fuel oil condensing boiler reverse-balancing heat efficient measuring method

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example

[0165] The known data and setting parameters of air and fuel (200 heavy oil) are shown in Table 1;

[0166] Table 2 shows the exhaust loss composition and thermal efficiency measured by the present invention.

[0167] After obtaining the thermal efficiency of the condensing boiler, the fuel consumption can be obtained according to the specific boiler capacity or heat supply, and a series of subsequent thermal calculations can be performed.

[0168]

Fuel

Symbol

Quality share

High post

Calories

Fuel consumption

Consumption

C ar

H ar

S ar

N ar

M ar

Q gr，v

B

Value

83.98

12.23

1.0

0.2

2.0

44662

0.056

Air

Symbol

Relative

Humidity

Overdose

Coefficient

Water vapor

Saturation pressure

Force

Overheated

Water steam

Enthalpy

Saturated

Water enthalpy

Dry air

Constant pressure ratio

Hold ...

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Abstract

A method for measuring anti-balance heat efficiency of boiler in fuel oil condensing type includes selecting datum and reference temperature; analysing fuel composition; measuring fuel heating value, air pressure and air relative humidity, volume content of composition in smoke, temperature of smoke fuel, consumption and condensed water in smoke; selecting method for calculating heat efficiency and utilizing model to operate out boiler heat efficiency.

Description

Technical field [0001] The invention relates to the field of boilers of thermal energy engineering, in particular to a method for measuring the counterbalance thermal efficiency of an oil-fired condensing boiler. Background technique [0002] Conventional boiler thermal efficiency measurement and calculation models generally use the thermal calculation model of the former Soviet Union. This conventional model is based on the thermal efficiency analysis method of fuel low calorific value, because the exhaust gas temperature of conventional boilers (including power station boilers and industrial boilers) is generally higher than 170℃, and the steam in the wet flue gas discharged from the boiler is in gaseous state. It is discharged directly without condensation, and the latent heat of vaporization of water vapor is not used. At this time, the calculation model is suitable for the thermal performance test procedures of conventional boilers. [0003] For oil (or gas) condensing boile...

Claims

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Application Information

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IPC IPC(8): G01N25/00G01N25/18G01N25/20
Inventor 赵钦新贾晓琳康子晋郑蕾张蕾
Owner XI AN JIAOTONG UNIV
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