In order to analyze the effect of hydrophilic coating on the air side perform-ance of finned tube heat exchanger,an contrast experiment is conducted on the pressure drop and heat resistance of hydrophilic coating&plain finned tube heat exchanger under dry/wet conditions.The results show that compared with the plain finned tube heat exchanger,the air side pressure drop increases a little,while the heat resistance increases about 10%for hy-drophilic coating finned tube heat exchanger under dry condition;the air side pressure drop de-creases a little,while the heat resistance increases about 4%for hydrophilic coating finned tube heat exchanger under wet condition.Moreover,the heat resistance for hydrophilic coating finned tube heat exchanger is generally not influenced by air humidity.
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