Free cooling design of cooling tower for a theater project in Nanjing

Presents the free cooling principle and classification of cooling tower. Taking a theater project in Nanjing as an example, analyses the main factors influencing free cooling of cooling tower, elaborates the calculation process of cooling tower cooling capacity, and proposes a design flow path of cooling tower. The results of analysis and computation show that, the annual utilization time reaches 821 hours and 1 122 hours at 100% and 50% of tower water flow, accounting for 17% and 24% of operational time, respectively. The energy saving ratios are 3.8% and 5.3% correspondingly, which means that cooling tower free cooling has a considerable energy saving and economic benefit.