The cooling method of nature oilcirculation is not only widely used in small-middle type power transformer, but also used in large type power transformer with low load and low ambient temperature.
Using the example of circulationcooling water system in Yangzi Petrocdemical Company (YPC) oil refining plant, the formation reason and control methods of slime are analyzed systematically.
结合扬子石化公司炼油厂循环冷却水系统的实例，系统地分析了粘泥的成因，并提出了控制对策。
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Since primary transformer of electric locomotive adopts the forced oil-circulationcooling method, its heating computation is rather complicated and difficult.