风冷空调冷凝器相变储能自然冷却系统研究

Natural cooling system using phase change materials for condenser of air conditioner

研究了一种应用于风冷空调冷凝器的相变储能自然冷却系统,实现相变材料在夜间储存室外空气的冷量,在白天将所储存的冷量释放出来冷却冷凝器的进口空气。以北京地区为取样对象,分析了夏季期间不同相变温度的相变储能自然冷却系统对冷凝器进风温度及空调能效比(EER)的影响。研究发现,当相变温度为25℃时,应用相变储能自然冷却系统的空调的EER达到最大,比传统空调的EER提高了8.53%。

A natural cooling system,which was incorporated with a thermal energy storage unit using phase change materials(PCMs)for the air-cooled condenser of air conditioner,was proposed and numerically investigated.This system can store the coldness from outdoor air at night,and release it to cool the inlet air of the condenser during the daytime.The influences of the system with different melting temperatures of PCM on the condenser inlet air temperature and the energy efficiency ratio(EER)of air conditioner in Beijing,China during summer were analyzed.The results show that the maximum average EER of air conditioner can obtain when the melting temperature of PCM is 25℃,with an increasing ratio over the conventional air conditioner by 8.53%.