火力发电厂空冷系统型式选择的分析
发布时间：2019-03-27 19:45
【摘要】：文章主要对我国北方地区火力发电厂直接空冷和间接空冷系统型式的选择原则进行研究分析。针对影响空冷系统选择的主要气象参数,通过具有代表性的工程实例,在不同环境温度、不同环境风速及不同海拔高度下,对空冷系统的背压及配置规模变化规律进行了分析总结;对ACC系统和ISC系统在技术方面进行了对比研究;最终归纳出在我国北方不同区域空冷系统的选择原则。环境温度对间接空冷系统背压的影响较直接空冷系统明显。随着环境温度的升高,间接空冷系统背压较直接空冷系统背压升高的快;随着环境温度的降低,间接空冷系统背压较直接空冷系统背压降低的快。环境风速对直冷空冷系统背压的影响较间接空冷系统明显。在风速超过3m/s时,直接空冷系统的背压增加迅速;在风速为3.0~9.0m/s范围时,间接空冷系统的背压增加不明显,当风速超过9.0m/s时,需通过数模试验进行分析。海拔高度对直冷空冷系统背压的影响较间接空冷系统明显。随着海拔的升高,直接空冷系统背压较间接空冷系统背压升高的快。
[Abstract]:The selection principles of direct air cooling system and indirect air cooling system for thermal power plants in northern China are studied and analyzed in this paper. In view of the main meteorological parameters which affect the selection of air cooling system, through representative engineering examples, under different environmental temperature, different environmental wind speed and different altitude, The change law of back pressure and configuration scale of air cooling system is analyzed and summarized. This paper compares ACC system and ISC system in technical aspect and concludes the selection principle of air cooling system in different regions of northern China. The influence of ambient temperature on the backpressure of indirect air-cooling system is more obvious than that of direct air-cooling system. With the increase of ambient temperature, the backpressure of indirect air-cooling system increases faster than that of direct air-cooling system, and with the decrease of ambient temperature, the back pressure of indirect air-cooling system decreases faster than that of direct air-cooling system. The influence of ambient wind speed on the back pressure of direct cooling air-cooling system is more obvious than that of indirect air-cooling system. When the wind speed exceeds 3m/s, the back pressure of the direct air cooling system increases rapidly. When the wind speed is in the range of 3.0~9.0m/s, the back pressure of the indirect air-cooling system does not increase obviously. When the wind speed exceeds 9.0m/s, it needs to be analyzed by numerical simulation test. The influence of altitude on the back pressure of direct air cooling system is more obvious than that of indirect air cooling system. With the increase of altitude, the back pressure of direct air-cooling system increases faster than that of indirect air-cooling system.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM621
本文编号：2448503
[Abstract]:The selection principles of direct air cooling system and indirect air cooling system for thermal power plants in northern China are studied and analyzed in this paper. In view of the main meteorological parameters which affect the selection of air cooling system, through representative engineering examples, under different environmental temperature, different environmental wind speed and different altitude, The change law of back pressure and configuration scale of air cooling system is analyzed and summarized. This paper compares ACC system and ISC system in technical aspect and concludes the selection principle of air cooling system in different regions of northern China. The influence of ambient temperature on the backpressure of indirect air-cooling system is more obvious than that of direct air-cooling system. With the increase of ambient temperature, the backpressure of indirect air-cooling system increases faster than that of direct air-cooling system, and with the decrease of ambient temperature, the back pressure of indirect air-cooling system decreases faster than that of direct air-cooling system. The influence of ambient wind speed on the back pressure of direct cooling air-cooling system is more obvious than that of indirect air-cooling system. When the wind speed exceeds 3m/s, the back pressure of the direct air cooling system increases rapidly. When the wind speed is in the range of 3.0~9.0m/s, the back pressure of the indirect air-cooling system does not increase obviously. When the wind speed exceeds 9.0m/s, it needs to be analyzed by numerical simulation test. The influence of altitude on the back pressure of direct air cooling system is more obvious than that of indirect air cooling system. With the increase of altitude, the back pressure of direct air-cooling system increases faster than that of indirect air-cooling system.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM621
【参考文献】
相关期刊论文 前3条
1 郭昆;;空冷节水技术在火力发电厂的应用[J];内蒙古科技与经济;2008年08期
2 王佩璋;我国大型火电直接空冷技术的特点[J];电力勘测设计;2004年02期
3 孙庆复;王秉文;宋志强;;福哥型空气冷却器元件的性能试验研究[J];电力技术;1991年08期
，本文编号：2448503
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