户式热湿分控空调机组的设计与性能实验研究

Design and Experimental Study of a Novel Residential Air Cooled Air-conditioning System for Independent Temperature and Humidity Control

针对热湿地区的特点和目前该地区房间空调器遇到的问题,研究开发了一种户式热湿分控空调机组,该机组可以分开处理室内的显热和潜热负荷,分别调节室内温度和湿度,从而提高室内舒适度和降低能耗。这里采用焓差法对该热湿分控机组进行实验,测定了其季节能效比(SEER)为3.932;并设计正交实验,研究了室外温度、室内温度、室内湿度、压缩机频率和风侧冷剂比例对机组性能的影响,得出了各影响因素对机组除湿量、能效比和制冷量的影响;并在室外温度、室内温度和湿度一定的情况下,对压缩机频率和风侧冷剂比例进行全析因正交实验,结果表明,热湿分控机组的除湿量在0~4.02kg/h之间变化,随压缩机频率的变化比率约为0.07~0.08(kg/h)/Hz,随风侧冷剂比例变化的比率约为0.65~0.8kg/h/(10%);能效比在2.71~4.57之间变化,随压缩机频率的变化比率约为-0.033^-0.046/Hz,随风侧冷剂比例变化的比率约为-0.12^-0.17/(10%);制冷量在6822~13080W之间变化,随压缩机频率的变化比率约为118~154W/Hz,随风侧冷剂比例变化的比率约为-489^-676W/(10%)。

Based on the weather conditions in hot and humid area,and present problems of house air-conditioners in this region,a novel residential temperature-humidity independent control air-conditioner was designed to remove the indoor sensible heat load and latent heat load separately,which could enhance the indoor thermal comfort and energy efficiency.The experiments were carried out in the enthalpy difference lab and its SEER（3.932） and the influence of five factors based on orthogonal method,including outdoor air temperature,indoor air temperature,indoor air humidity,compressor frequency,and refrigerant distribution ratio in the air-side evaporator.Further,the impacts of the latter two factors were investigated at outdoor air temperature 34℃,indoor air temperature 26℃ and indoor relative humidity 55%.The results showed that the dehumidification capacity ranged from 0 to 4.02kg/ h,the changing ratio against compressor frequency was 0.07~0.08（kg/h）/Hz,and the changing ratio against air-side evaporator refrigerant ratio was 0.65~0.8kg/h/（10%）;the EER ranged from 2.71 to 4.57,the changing ratio against compressor frequency was-0.033^-0.046/Hz,and the changing ratio against air-side evaporator refrigerant ratio was-0.12^-0.17/（10%）;the refrigeration capacity ranged from 6822 to 13080W,the changing ratio against compressor frequency was 118~154W/Hz,and the changing ratio against air-side evaporator refrigerant ratio was-489^-676W/（10%）;