大型电站哈蒙式空冷系统的热力计算

Thermal design for Harmon dry-cooling system in large power station

对哈蒙系统空冷塔内的空气流动和热传递进行了分析,在换热器和空冷塔的尺寸或系统参数确定的情况下,提供了一种联合迭代方法,求解从理论和经验公式中得出的热传递和通风方程.以686 MW机组为例,计算结果与实际结果能较好地吻合,表明对哈蒙系统的设计方法是实用的和可行的.

Based on the analysis of air flow and heat transfer in the dry-cooling tower of Hamon system, a combined iteration method is presented to solve the coupled heat transfer and draft equations derived from theoretical and empirical formulas, with the size of the exchangers and the cooling tower or the systematic parameters being determined. Taking the 686 MW unit as an example, the present calculating results are well agreed with those of the real case, and thus the method presented is practical and feasible for reasonable design of Haman system.