| 天然气锅炉改造为冷凝式锅炉的经济性评价 |
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| 引用本文： | 高春阳,刘艳华,车得福.天然气锅炉改造为冷凝式锅炉的经济性评价[J].节能技术,2003,21(5):8-11. |
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| 作者姓名： | 高春阳 刘艳华 车得福 |
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| 作者单位： | 西安交通大学能源与动力工程学院,陕西,西安,710049 |
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| 摘 要： | 燃气供热锅炉排烟温度较高，带走了大量的热能。如果加装冷凝式换热器回收烟气的显热及潜热，可以大大提高锅炉效率，但是加装换热器必然增加设备成本。本文通过对冷凝式换热器设计计算，计算出不同排烟温度下的热能回收设备投资回收期，从经济上分析了天然气锅炉改造为冷凝式锅炉的可行性，并给出了锅炉最佳排烟温度。
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| 关 键 词： | 天然气锅炉 冷凝式锅炉 经济性 烟气显热 烟气潜热 成本 投资回收期 排烟温度 |
| 文章编号： | 1002-6339(2003)05-0008-04 |
Economical Evaluation of Retrofitting Natural Gas Fired Boiler into Condensing boiler |
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| GAO Chun-yang,LIU Yan-hua,CHE De-fu.Economical Evaluation of Retrofitting Natural Gas Fired Boiler into Condensing boiler[J].Energy Conservation Technology,2003,21(5):8-11. |
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| Authors: | GAO Chun-yang LIU Yan-hua CHE De-fu |
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| Abstract: | The exit flue gas temperature of gas-fired boiler is usually high and much heat energy is lost to the environment.If both sensible heat and latent heat can be recovered by a condensing heat exchanger,the efficiency of the boiler can be increased by as high as 10%.In this paper,the payback periods of the heat recovery device at different exit flue gas temperatures by performing design calculations,and the feasibility of retrofitting a traditional gas fired boiler into a condensing boiler in heating system is analyzed in details.Finally the most economical exit flue gas temperature is proposed. |
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| Keywords: | Condensing boiler Sensible heat Latent heat Cost Payback period |
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