| 燃气锅炉烟气在滴型管外传热特性的数值分析 |
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| 引用本文： | 李慧君,关秀红.燃气锅炉烟气在滴型管外传热特性的数值分析[J].热科学与技术,2012,11(2):95-100. |
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| 作者姓名： | 李慧君 关秀红 |
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| 作者单位： | 华北电力大学能源动力与工程机械学院动力工程系,河北保定,071003 |
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| 摘 要： | 在回收燃气锅炉烟气余热时,采用特殊管型强化传热以吸收烟气中大量的水蒸气所携带的显热和潜热,可以降低锅炉的排烟温度,提高锅炉的热效率。对滴型管和圆管烟气侧传热特性进行数值计算,通过对计算结果的分析比较,探讨了影响传热的因素,得出滴型管的传热特性优于圆管的结论,为特殊管型在冷凝换热器中的应用提供参考。
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| 关 键 词： | 烟气 传热 管型 数值计算 分析 |
Numerical analysis on heat transfer characteristic of flue gas outside drop-shaped tubes of gas boiler |
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| LI Hui-jun
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GUAN Xiu-hong.Numerical analysis on heat transfer characteristic of flue gas outside drop-shaped tubes of gas boiler[J].Journal of Thermal Science and Technology,2012,11(2):95-100. |
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| Authors: | LI Hui-jun GUAN Xiu-hong |
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| Affiliation: | Department of Power Engineering,School of Energy Power and Mechanical Engineering,North China Electric Power University,Baoding 071003,China |
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| Abstract: | For the heat recovery of the flue gas in the gas boiler,special tube was used to enhance heat transfer by absorbing the sensible heat and latent heat of water vapor in the flue gas,which can reduce the exhaust gas temperature,improve the thermal efficiency of condensing boiler.Numerical calculation was carried out for the heat transfer characteristics of drop-shaped tube and circular tube respectively.Based on the analysis of the simulation results with some comparison,the influence factors of heat transfer were discussed.These show that drop-shaped tube provides a higher heat transfer performance than circular tube and provide some references in the application of special type tube of heat exchangers. |
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| Keywords: | flue gas heat transfer tube-type numerical calculation analysis |
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