Measurement method and influencing factors of temperature and humidity of condensed flue gas based on in situ flue gas heat tracing

被引：4

作者：

Gao, Jianmin ^{[1
]}

Sun, Zhihao ^{[1
]}

Wang, Zhiqiang ^{[2
]}

Wang, Xin ^{[1
]}

Guan, Jian ^{[3
]}

Qi, Guoli ^{[3
]}

Wang, Zhongwei ^{[3
]}

Du, Qian ^{[1
]}

Qin, Yukun ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China

[2] China Coal Res Inst, Beijing 100013, Peoples R China

[3] China Special Equipment Inspect & Res Inst, Beijing 100029, Peoples R China

来源：

MEASUREMENT | 2018年 / 120卷

关键词：

Condensing boiler; Flue gas; Condensation; Supercooling; Thermal test; Interlayer pumping; EFFICIENCY; BOILER; CHINA; WATER;

D O I：

10.1016/j.measurement.2018.01.067

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Condensing boilers are efficient for the utilization of natural gas. However, condensed droplets in flue gas are supercooled after condensation heat transfer, and direct contact devices cannot accurately measure the temperature of flue gas containing such droplets. Therefore, an in situ heating interlayer pumping device was designed. Experimental results showed that in situ heating interlayer pumping device can effectively filtered out the influence of supercooled droplets, the temperature of flue gas measured by the proposed device was about 3 degrees C higher than that measured by direct contact temperature measuring device; the device optimum flow rate was 0.35 L/min, optimum heat tracing temperature was in the range 100-140 degrees C; the effective reliability of the device was verified experimentally using the positive balance efficiency and the counter balance efficiency of 30-kW gas-fired condensing heat-transfer test platform.

引用

页码：100 / 106

页数：7

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