低温送风系统的研究进展

Study progress of cold air distribution systems

总结了近年来与冰蓄冷相结合的低温送风空调系统的研究成果及进展,认为低温送风系统的研究主要集中在经济性评价和室内气流组织及热舒适性评价两个大的方面。低温送风系统的经济性评价主要取决于室内参数和送风温度的设定及末端送风方式的选择,分析了省能器循环的减少对低温送风系统全年经济性的影响。低温送风的通风及舒适性主要取决于射流结构是否合理及描述室内空气品质和热舒适性的各项指标是否达到标准,总结了在低温送风系统通风及舒适性方面的主要研究方法及研究成果。最后提出了该技术未来的研究方向。

Study achievements and progress in cold air distribution systems which are combined with ice storage systems were summarized in recent years. It was found that research of cold air distribution systems was focused on both economical efficiency evaluation and ventilation as well as thermal comfort evaluation. The economical evaluation mainly depended on parameters of indoor air, supplied air temperature and selection of outlet. The influence of less economizer cycle＇s operating times due to using cold air distribution systems on annual economical efficiency of air-conditioning system was analyzed. Otherwise, the assessment of ventilation and thermal comfort mainly depended on if the structure of cold air jet was reasonable and if certain indexes which described the indoor air＇s quality and thermal comfort could reach the standard. Then, some potential investigation orients of cold air distribution systems in the future were put forward.