【摘要】 <正> 一、引言 我国北方煤炭丰富但水源不足,因而为了发展矿区电厂,就需要重视空冷系统的研究。1982年,我国从匈牙利引进海勒干冷技术和部分设备,安装于大同第二发电厂5~#、6~#机组上。我们通过分析5~#机组自1987年年底投入运行以来的记录数据,认为大同海勒系统的设计虽基本合理,但偏于保守,布置的散热面积过多,以致在环境温度高出设计温度相当大数值时,不需要将百叶窗全部打开,即能满负荷发电。更多还原

【Abstract】 The main parameters of Heller system are optimized with the annual cost. The authors also give the analysis of sensitivity on the optimization conditions. From this, two results are put up. One is the maximum effective number of the heat exchangers which surround the dry cooling tower of certain height. The other is the four characteristic ranges: maximum Rh range, change Rh range, minimum Rh range and double tower range.更多还原