The two 2×220MW direct air-cooling units in Yungang thermo-electric power Co. Ltd is the pioneer units putting into operation at home. The paper will discuss the design features of the direct air-cooling system and its operating experiences, ACC condenser is loaded for the testing date ,theory exanine and calculate,ACC condenser run way, antifreeze way and direct air-cooling unit's high vacuum, lower cold water and test's date analyzed for the contrast and thesis is discussed for the careful.
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