无霜空气源热泵系统喷淋溶液质量及浓度变化规律研究

本文提出了无霜空气源热泵系统及其工作过程,根据提出的无霜空气源热泵的原理,进行了喷淋溶液的筛选。分析目前常用的除湿溶液,主要从蒸汽压力、凝固点、粘度、经济性等方面对常用的有机除湿溶液进行比较,最后确定丙三醇（甘油）作为室外换热器的喷淋溶液。通过比较不同溶液浓度和流量对除湿性能及机组性能的影响来找到合理的喷淋溶液的浓度和喷淋溶液的流量。然后使用这个浓度和流量在不同的室外气候条件下向室外换热器喷淋除湿溶液,分析不同室外条件对除湿效果和抑制结霜效果的影响,整理出室外风机风量、室内供热量、输入功率、COP、喷淋溶液截留的水量等参数的变化。最后通过实验数据分析喷淋溶液集中再生的条件,分析不同地区喷淋溶液集中再生的可行性及不同地区集中再生需要的稀溶液罐和浓溶液罐体积,为无霜空气源热泵的应用提供参考。

Study on Change Trend of Spray Solution Quality and Concentration for Nonfrosting Air Source Heat Pump System

Working principle and work processes of nonfrosting air-source heat pump system are proposed. Basic on nonfrosting principle of ASHP, the spray solution is filtered out. It analysises the properties of dehumidification solution which is currently used. Common dehumidification solution is compared from steam pressure, corrosiveness, economical efficiency aspects. The glycerol is elected as the spray solution for outdoor heat exchanger. Comparing the concentration and flow on the performance of dehumidification solution is to find a reasonable spraying concentration and the flow of the spray solution. Then using this concentration and flow rate in different outdoor climate conditions to analysis of different outdoor conditions and inhibiting influence of frost. The variation of the room fan capacity, indoor heating, power input, COP, water interception of spray solution is provided. In the end of this article, through regeneration of spray solution set condition for experimental data analysis, It analysis the requirement and the feasibility on concentrated regeneration of different areas needs and provides the references for the applicating of the nonfrosting air-source heat pump.