Research of Technical and Economic Performance of Plastic Capillary Mats Used as the Heat Exchanger of a Closed-circuit Cooling Tower

•Plastic capillary mats are firstly introduced to closed-circuit cooling towers.•Invention of capillary mats structure meets the demand of heat transfer and flow.•Test results of PE capillary mats proved that the theoretical method is right.•Comprehensive performance of closed-circuit cooling towers has been improved.