CONVECTIVE DRYING KINETICS OF SINGLE DROPLETS OF AQUEOUS GLUCOSE
The convective drying kinetics of single droplets of aqueous glucose was measured using a single droplet drying rig.The effects of air temperature and velocity were evaluated.It was found that the droplet of aqueous glucose shrank uniformly, retaining a nearly spherical shape during drying.The normalized volume (d/d0)3 of the droplet decreased linearly with its moisture content.A constant drying rate like period occurred when the moisture content of the droplet was higher than an amount of about 1.0 kg kg-1 dry solid.The diameter of the droplet decreased sharply due to the evaporation of water, while its temperature remained at a wet-bulb like temperature in this period.When the moisture content of the droplet was lower than the above-mentioned value, the drying transferred to falling drying rate period during which the temperature of the droplet rose quickly and approached the air temperature as drying continued.
drying kinetics glucose droplet
Liming Che Dong Li Xiao Dong Chen
Biochemical Engineering,Xiamen University,Xiamen 361005,P.R.China College of Engineering,China Agricultural University,Beijing 100083,P.R.China
国际会议
The 7th Asia-Pacific Drying Conference(第七届亚太地区干燥会议 ADC2011)
天津
英文
1-9
2011-09-18（万方平台首次上网日期，不代表论文的发表时间）