This paper presents the principle of MDV system and explains its advantages in architecture energy saving through comparing with air-cooled heat pump unit in operation economy.

本文阐述了MDV系统的原理，通过与风冷热泵机组在运行经济性方面的比较，充分说明了MDV系统在建筑空调中的优势。

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McQuay China manufactured products includes water cooled chiller, air cooled chiller, light commercial units, water source heat pump, air-handling unit, fan coil unit, compressor and so on.

麦克维尔在中国生产的空调产品涵盖水冷冷水机组、风冷冷水机组、轻型商用空调机组、水源热泵机组、空气处理机组、风机盘管、压缩机等系列产品。

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