介绍一种新型的混合通风间接空冷技术，并用数值模拟方法对2×600 MW级机组自然通风间接空冷系统和混合通风间接空冷系统进行了对比计算，获得了典型风速条件下的流场、散热规律和变化机制；以1 000 MW空冷机组为例，比较了自然通风和混合通风间接空冷系统的经济性。

A new indirect air cooling technology with mixed ventilation is introduced in this paper. The indirect air cooling systems between natural ventilation and mixed ventilation for 2×600 MW units are compared by using numerical simulation method, and then the flow field, heat transfer rule and change mechanism under typical wind speed conditions are obtained. Moreover, the economy of indirect air cooling systems with natural ventilation and mixed ventilation are compared, taking 1 000 MW air cooling unit as an example.