A Study on the Efficiency Improvement of Fire-tube Boiler Structure and Fuel

被引：0

作者：

Shin, Cheol Su ^{[1
]}

Suh, Hyun Kyu ^{[2
]}

机构：

[1] Kongju Natl Univ, Grad Sch Mech Engn, Gongju, South Korea

[2] Kongju Natl Univ, Dept Mech & Automot Engn, Gongju, South Korea

来源：

JOURNAL OF THE KOREAN SOCIETY OF COMBUSTION | 2024年 / 29卷 / 02期

关键词：

Furnace-tube boiler; Combustion; Logarithmic Mean Temperature Difference(LMTD); Thermal efficiency; Total heat transfer coefficient;

D O I：

10.15231/jksc.2024.29.2.001

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This study was conducted to improve the thermal efficiency of the furnace-tube boiler to reduce fuel consumption and harmful exhaust emissions. To achieve this, flow analysis of the 3-pass boiler geometry was conducted by applying the SST k- co turbulence model to simulate the flow of water and heat generated by combustion. The performances of the boiler were compared through the thermal efficiency of the boiler and the heat transfer rates in the furnace, 2 nd pass, and 3 rd pass. It was revealed that the change in materials and number of tubes showed a maximum thermal efficiency difference of 5.6%, which did not significantly impact the boiler performance. The most substantial efficiency improvement was observed with fuel changes, achieving the highest efficiency of 55.39% with LFG. This showed a 21.6% efficiency difference compared to the 33.78% thermal efficiency of LNG.

引用

页码：1 / 10

页数：10

共 50 条

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