Energy efficiency analysis of air conditioning cooling water system in Jiahe Wanggang Station of Guangzhou underground railway line 14

Taking the cooling water system of Jiahe Wanggang Station of Guangzhou underground railway line 14 as a research object, establishes a fitted system energy efficiency model based on laboratory data. Taking the operation energy efficiency as the optimization index, analyses and compares the theoretical calculation values of cooling water system energy efficiency at different load rates and wet-bulb temperatures with different cooling water flow and cooling air rates, and obtains the optimal operation air-water ratio. The actual operation data show that the optimal control strategy can result in higher cooling water system energy efficiency, but the cooling water system energy efficiency model still needs to be modified under some conditions.