Study on Condensation Storage of Mass and Heat Transfer during Condensation
This paper simulates the temperature difference in real storage,the yellow corn Zhengdan 958 with 14％moisture content was studied,and places it in an autodidactic simulated warehouse where cold air can be input by low temperature cavity and hot air can be input by high temperature cavity,the storage research was carried out under the temperature difference of 5℃(25～30℃).The grain temperature of the low temperature wall,the middle part and the high temperature wall were divided into three layers for analysis.The average value of the data recorded by the three temperature and humidity sensors in each layer was taken to study and analyze the migration and change rule of temperature and humidity and moisture content.The results show that condensation occurs at about 26h under the temperature difference of 5℃(25～30℃),and there will be micro-airflow at 5℃,resulting in moist heat diffusion.Under the effect of temperature difference,moist heat migrates and redistributes from high temperature region to low temperature region,thus affecting the change of moisture and water content in grain pile,If not treated in time,even if the temperature difference of 5℃ is small,when the water vapor reaches the saturated state,the water vapor con-denses into water droplets attached to the surface of the grain,the hygroscopic condensation phenomenon will occur.
cornmixed storagecondensationmass and heat transfer
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