| 电站空冷系统最佳尾部参数 |
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| 引用本文： | 傅秦生,刘咸定.电站空冷系统最佳尾部参数[J].西安交通大学学报,1987(5). |
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| 作者姓名： | 傅秦生 刘咸定 |
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| 作者单位： | 西安交通大学动力机械工程系
(傅秦生)，西安交通大学动力机械工程系(刘咸定) |
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| 摘 要： | 本文根据热经济学原理,确定了空冷机组的电站初始温差、空冷器水速和迎面风速优化计算的目标函数——年度化计算费yy=CO_f CO_6 (β_T γ_T)CI_T (β_H γ_H)CI_H并依据空冷器传热原理、冷却塔空气动力理论以及多元回归统计方法导出目标函数的解析表达式.然后,以表面式冷凝器的间接空冷系统为对象,结合国产N200-130/535/535型汽轮机对空冷系统尾部参数ITD、V_w 和V_(NF)进行优化计算.并对四种不同型号的冷却元件进行比较,获得了最佳尾部参数.优化计算结果表明:气温t_a 对ITD_(OPT)、V_(w.OPT)、V_(NF.OPT)的数值在相当广阔的范围内影响不大,气温自6.5℃至30℃范围内,可采用ITD_(OPT)=28℃,V_(w.OPT)=0.8m/s,V_(NF.OPT)=2.28m/s.空冷元件不同,最佳尾部参数略有改变,而以P6×3-2010/87-16型冷却元件效果最好.文中提供的尾部参数优化目标函数以及优化计算的数值方法,原则上也适用于其他空冷系统.所取得的优化结果对海勒系统有直接参考价值.
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| 关 键 词： | 热电站 热力学系统 热交换 寻优 |
THE DETERMINATION OF THE OPTIMAL TAIL PARAMETERS OF A POWER PLANT SYSTEM WITH DRY COOLING TOWER |
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| Fu Qinsheng Liu Xianding.THE DETERMINATION OF THE OPTIMAL TAIL PARAMETERS OF A POWER PLANT SYSTEM WITH DRY COOLING TOWER[J].Journal of Xi'an Jiaotong University,1987(5). |
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| Authors: | Fu Qinsheng Liu Xianding |
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| Institution: | Department of Power Machinery Engineering |
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| Abstract: | According to thermoeconomical theory this paper has proposed a minimum
calculated annual cost as the objective function,using initial temperature
difference ITD,water velocity V_W and air velocity V_(NF) in air eooler as the
variable parameters.The analytical expression of the objective function is
derived by using heat transfer and aerodynamics correlations and multiparameter
regression principles.An optimization calculation is carried out for an indirect
dry cooling tower system and the values of ITD,V_W and V_(NF) are obtained. |
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| Keywords: | thermal power station thermodynamic system heat exchange optimizing |
| 本文献已被 CNKI 等数据库收录！ |
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