换热器溶液除霜技术的研究进展
Research progress of solution defrosting technologies for heat exchangers
摘要：
综述了溶液再生方法、技术的研究现状和最新突破，并评估了溶液除霜技术的发展方向。通过已有研究总结了影响溶液喷淋和溶液再生的因素，结果表明，溶液喷淋的单位迎风面积最佳抑霜风速为0.13~0.16 m/s。总结分析了溶液浓度对除霜效率的影响，得出当溶液质量分数为31%~65%时，溶液除霜可满足除霜要求，并在溶液质量分数为50%时，溶液除霜的效率最高。最后分析了溶液除霜的优点和不足，指出溶液除霜可作为常态化辅助减霜和抑霜手段，构建绿色除霜环境，或基于溶液除霜构建近零结霜空气源热泵系统。
Abstract：
This paper reviews the research status and latest breakthroughs of solution regeneration methods and technologies, and evaluates the development direction of solution defrosting technologies. The factors affecting solution spraying and regeneration are summarized through previous studies. The results show that the optimal frost suppression wind speed per unit windward area of solution spraying is 0.13 to 0.16 m/s. The influence of solution concentration on defrosting efficiency is summarized and analysed. It is concluded that when the solution mass fraction is 31% to 65%, the solution defrosting can meet the defrosting requirements, and when the solution mass fraction is 50%, the efficiency of the solution defrosting is the highest. Finally, the advantages and disadvantages of solution defrosting are analysed, and it is pointed out that solution defrosting can be used as a normalized auxiliary defrosting and frost suppression means to build a green defrosting environment, or a near zero frosting air-source heat pump system based on solution defrosting technology.
Keywords:air-source heat pump; frosting; frost-free; solution defrosting; solution regeneration; defrosting efficiency