基于无机水合盐相变材料的相变蓄冷新风机实验研究

Experimental Research on Phase Change Fresh Air Ventilator Based on Inorganic Hydrated Salt Phase Change Materials

新风系统提高了空气质量,但其温度波动增加了空调系统的负担。相变材料能够利用低品位冷源进行蓄冷,控制新风温度波动。本研究将性能优异的无机复合相变材料与新风机耦合以搭建相变新风机,探究了18、20、22℃的冷水工况下相变新风机的蓄冷性能,发现夜间高温冷源能够满足蓄冷要求,利用相变储热的方式转移用电高峰;此外,相变蓄冷模块能够将28℃的新风温度降低2.4~3℃;基于峰谷电价政策,该装置充分利用电价差可节约54.8%的电力成本。

The fresh air system can improve the air quality,but its temperature fluctuations increase the burden on the air conditioning system.Phase change materials can use low-grade cold sources for cold storage and control fresh air temperature fluctuations.In this study,an inorganic composite phase change material with excellent performance is coupled with a fresh air ventilator to construct a phase change fresh air ventilator.And its cold storage performances under the cold water of 18,20,and 22℃are explored.It is found that the high temperature cold source at night can meet the cold storage requirements.Based on the phase change heat storage,the peak of electricity consumption can be shifted.In addition,the phase change cold storage module can reduce the fresh air with inlet temperature of 28℃by 2.4~3℃.According to the peak-valley electricity price policy,the device can save 54.8%power cost by making full use of the electricity price difference.