Compared with the wet cooling unit

the directly air cooling system saves water

but the initial investment and operating costs are higher. In order to improve the economics of the directly air cooling system

take the directly air cooling system of the Powerchina Qinghai Gonghe 50 MW solar thermal power project as an example

through a comprehensive comparison of design back pressure and front wind speed

the directly air cooling system is implemented by the least total annual cost method. The optimization calculation found that the initial investment of the directly air cooling system is inversely proportional to the front wind speed and the design back pressure

while the operating cost is proportional to the front wind speed and inversely proportional to the design back pressure. The total annual operating cost of the direct air-cooling system needs to be compared with different combination plans to arrive at a relatively optimal operating plan.