The development of air-cooling technology effectively saves water resources.But it is largely influenced by the environmental temperature.So water spray system is applied to improve cooling capacity of the equipments and enhance heat exchange property of the air side heat exchanger.Against the single-row fin tube

the characteristics of heat transfer and flow resistance of the air cooler under dry and wet condition were experimentally investigated.Results showed that

under the same conditions

not only the flow resistance but also the heat transfer coefficient increased after the water was sprayed.According to the experimental data

expression of the heat transfer coefficient was obtained

providing technical support for design of the outdoor air cooler.