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分析了造成风冷热泵机组在长江流域地区冬季运行不可靠的原因，提出了对机组除霜控制技术和管路设计方面的改进意见，并就机组布置提出了新的看法。
The reasons for the unreliable operation of the air-cooled heat pump unit in the Yangtze River valley in winter were analyzed. Improvements in the unit’s defrosting control technology and piping design were proposed, and new views on unit layout were proposed.