户式温湿分控空调机组运行特性实验

利用焓差实验室对一种户式温湿分控空调机组的设备显热比变化特性进行实验.分别保持通过该机组两侧蒸发器的换热介质的入口参数恒定不变,当压缩机转速和风侧蒸发器的冷剂比例同时变化时,得到设备制冷量、设备显热比SCR以及能效比EER的变化曲线.实验结果表明,改变机组压缩机转速以及风侧冷剂的比例,不但改变机组总制冷量,同时改变机组输出显热冷量与潜热冷量的比例;设备SCR的变化范围0.6~1.0,远远大于传统空调机组的变化范围,可以与房间显热比SHR值更好地匹配,以更好地控制室内热环境.同时表明,设备SCR的调控受到机组总冷量与能效比的限制,在实现设备SCR及总制冷量的前提下,尽量使EER值最大,有利于节能.

Experimental Study on Operating Characteristics of Residential Temperature Humidity Independent Control Air conditioning

The paper presents an experimental study of the change characteristics of sensible cooling ratio of the residential temperature humidity independent control air-conditioning. The experiment was made in the enthalpy potential laboratory and the parameters value of heat exchange medium that filled in two evaporators were remained unchanged. By changing the compressor speed and the refrigerant distribution ratio, the curves of cooling capacity, sensible cooling ratio (SCR) and the energy efficiency ratio (EER) could be obtained. The experimental results indicated that not only the total cooling capacity, but the ratio of the sensible and latent heat handling capacity could changed. The range of SCR was from 0.6 to 1.0, which is much more than the traditional air-conditioning. It means that it could be better match the room sensible heat ratio (SHR) and be better control the indoor thermal environment. Meanwhile, SCR was restricted by the total cooling capacity and EER. For energy saving, EER should be highest based on realizing the cooling capacity and SCR.