Performances safety evaluation and test of residential fresh air purification heat recovery machine
Objective To obtain the optimal performance parameters of fresh air purification heat recovery machines in residential buildings under real operating conditions.Methods The experimental testing method was used to test and analyze the primary filtration efficiency and purification effect of the fresh air purification heat recovery machine in three working states under two operating modes in residential buildings.Results The purification effect of the fresh air purification heat recovery machine on indoor particulate matter was significant,reaching around 95％,meeting the indoor environment's requirements for fresh air cleanliness.The primary purification efficiency of the internal circulation was higher than that of the external circulation,and it was 0.22％-1.88％,0.36％-3.11％,and 0.86％-3.18％higher for PM10,PM2.5 and PM 10,respectively.The higher the internal circulation gear,the better the purification effect,while the external circulation showed the opposite trend.In addition,the noise intensity of the whole machine during operation meets the national standard limit below.Conclusion Based on the test results and actual working conditions,it is recommended to use an internal circulation high gear when the outdoor concentration is relatively high,and an external circulation low gear when the outdoor concentration is relatively low.This provides reference value for the efficient and economical use of residential fresh air purification heat recovery machines.
Residential buildingFresh air purification heat recovery machineFiltration efficiencyAnalysis
NETL
NSTL
万方数据
