摘要
针对现有移动空调依赖粗大室外排热管导致使用灵活性受限的问题,提出一种小型化冰蓄冷移动空调系统方案。该方案采用制冷循环与载冷剂循环双系统设计,并通过释冷/排热分时共用单一风道有效解决排热难题。基于该方案研制样机,实验研究了不同环境温度(干/湿球温度分别为32 ℃/23 ℃和27 ℃/19 ℃)及风冷换热器面积增大50%对系统性能的影响,测试了蓄冷阶段蓄冰装置的温度与能力变化以及释冷阶段的性能。结果表明:在制冷能力测试中,相较于32 ℃/23 ℃环境,在27 ℃/19 ℃较低环境温度下运行时,系统最终制冷能效比(EER)提高20%,单次释冷时长延长21%;风冷换热器面积增大50%后,系统最终制冷能效比提升6%,单次释冷时长延长19%。在整机体积约束内,增大换热面积可有效提升制冷效率和持续释冷能力。该冰蓄冷移动空调系统消除了对外接排热管的依赖问题,使用便捷,制冷效率高,并能利用低谷电力蓄冷、高峰时段释冷,实现电力“移峰填谷”,为冰蓄冷技术在移动空调领域的应用提供了可行的技术路径。
To address the limitation of existing mobile air conditioners(MACs)caused by their reliance on bulky outdoor exhaust ducts,a miniaturized ice-storage mobile air-conditioning system is proposed.This system employs a dualcycle design(refrigeration cycle and coolant circulation cycle)and effectively resolves the heat exhaust challenge by utilizing a time-shared single air duct for both cooling supply and heat rejection.Based on this scheme,a prototype was developed.Experiments investigated the effects of different ambient temperatures(dry-bulb/wet-bulb:32℃/23℃vs.27℃/19℃)and a 50%increase in air-cooled heat exchanger area on system performance.Temperature and capacity variations of the ice storage device during charging,along with discharging performance,were tested.Results demonstrate that during cooling capacity tests,compared to operation at 32℃/23℃,the system achieves a 20%higher final cooling energy efficiency ratio(EER)and a 21%longer single discharge duration when operating at the lower℃/19℃condition.Increasing the air-cooled heat exchanger area by 50%improves the final cooling EER by 6%and extends the discharge duration by 19%.This proves that within the unit’s physical volume constraints,enlarging the heat exchange area effectively enhances cooling efficiency and sustained cooling capability.The proposed system eliminates dependence on external exhaust ducts,offers user convenience,achieves high cooling efficiency,and enables electricity“peak shaving and valley filling”by utilizing off-peak power for ice storage and peak-hour cooling supply.It provides a viable technical pathway for applying ice-storage technology in mobile air conditioning.
出处
《日用电器》
2025年第8期56-63,共8页
ELECTRICAL APPLIANCES
关键词
移动空调
冰蓄冷
系统性能
释冷特性
移峰填谷
小型化系统
mobile air-conditioning
ice storage
system performance
cooling supply characteristics
peak shaving and valley filling
miniaturized system
