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摘要 ：以风机盘管冷水系统为研究对象，开发了空调冷水系统管网模拟软件，模拟分析了空调冷水系统在不同频率下的变频节能效果。试验验证结果表明，模拟结果与试验结果相近。频率越低，节能效果越好，水泵实际功耗并不符合三次幂定律。 关键词 ：冷水系统 变频调节 最小阻力控制 节能率 Experimental research on energy saving effects of variable frequency chilled water system of air conditioning By Liu Jinping★, Wen Jianliang and Liu Xuefeng Abstract Taking fan coil unit water system as study object, develops simulative software for calculating water system pipe network of air conditioning and simulates the energy saving effects of variable frequency chilled water system under different frequencies. Experimental result shows that the simulation result is closed to the experimental data. The lower the frequency is, the better the energy saving effect is, and the actual power consumption of the pump is not fit for cubic law in variable conditions. Keywords chilled water system, variable frequency regulating, minimum resistance control, energy saving rate ★ South China University of Technology, Guangzhou, China