环保、冶金及建材行业余热利用中的热交换器，常因管内污垢系数上升、换热面粘附粉尘而失效。
Heat exchanger in the heat reuse of environmental protection, metallurgy and construction materials often loses effectiveness because of the increased dirt coefficient.
通过实验方法测试了以原生长江水为冷却水的换热器污垢热阻和摩阻系数的变化。
The variation of fouling resistance and frictional resistance coefficient of heat exchanger using connate Yangtze River water as cooling water is tested experimentally.
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