Experimental Research on Phase Change Fresh Air Ventilator Based on Inorganic Hydrated Salt Phase Change Materials
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.
phase change materialinorganic hydrated saltfresh air systemcompositebuilding energy conversion
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