双风机空调系统焓值控制方式的节能性分析

Energy-saving analysis on enthalpy control method of air-conditioning system with double fans

双风机空调系统采用可变新风比的焓值控制方法,通过调节新风量的大小以最大限度的利用新风作为冷源来达到节能的目的。本文对比3种不同空调工况下新风的2种不同控制方式以定性分析采用焓值控制方式的节能性,利用海南地区某一实际工程项目计算对比采用焓值控制和不采用焓值控制的能耗差异,得出采用焓值控制能够节省8%的全年冷量和16%的机组运行时间,体现其节能优势。

The air-conditioning system with double fans adopts the enthalpy control method of variable ratio of fresh air, which achieves the purpose of energy-saving by adjusting the amount of fresh air to maximize the use of fresh air as cold source. Two kinds of control methods of fresh air under three different air-conditioning conditions are compared to analyze the energy-saving of enthalpy control method. The comparison analysis on the difference of energy consumption between adopting enthalpy control or not is conducted through one practical project in Hainan. It is concluded that the enthalpy control can save 8% of the annual cooling capacity and 16% of the running time of the unit, whose energy-saving advantage is obvious.