【摘 要】
：
Drying of green peas in a fluidized bed dryer (FBD) of inert particles heated by combined sources of hot air and infrared (IR) radiation,has been experimentally and theoretically studied.For this purp
【机 构】
：
School of Chem.Eng.,Shiraz University,Shiraz,IRAN
【出 处】
：
2009北京非热加工技术国际研讨会
论文部分内容阅读
Drying of green peas in a fluidized bed dryer (FBD) of inert particles heated by combined sources of hot air and infrared (IR) radiation,has been experimentally and theoretically studied.For this purpose,an experimental set up was constructed.This setup was composed of a cylindrical bed dryer containing some inert particles which are fluidized by hot air.Some infrared lampswere also placed around the bed for heating assistance.A sample of green pea was hung in the fluidized bed and its moisture content,surface and central temperature were measured with time.A mathematical model,based on two layers concept of penetration and conduction was also proposed for this process.The results obtained by the proposed model were compared with the experimental data.Once the validity of the model was checked,it was used to investigate the effects of parameters such as inlet air velocity and temperature,drying sample size and the amount of inert particles on the rate of drying.
其他文献
The quality characteristics of chilled pork treated with high pressure carbon dioxide (HPCD)were investigated in this experiment.A greater reduction of redness α after HPCD treatment of 7,14 and 21MPa
Changes of polyphenol oxidase (PPO),pectin methylesterase (PME) and related qualities in cloudy apple juice from apple slices treated by high pressure carbon dioxide (HPCD) were investigated in this s
Dense pressure carbon dioxide (DPCD) technology is a novel non-thermal processing,and is proved that retained the fresh-like sensory,nutritional,and physical properties of many liquid foods by avoidin
The possibility of using supercritical CO2 fluid extraction (SCE) to modify the physicochemical properties of dietary fiber from bamboo shoot industry by-products was studied.The sample was subjected
In this paper,the optimal decision on supercritical carbon dioxide to kill spores were explored.Bacillus subtilis spores are choosed in the experiments.Pressure,temperature,time and once or more proce
Functional materials in microorganism cell,cell membrane and cell wall could be dissolved by supercritical carbon dioxide.As a result,the microorganism cells would be damaged and may die because of in
The influence of high pressure carbon dioxide (HPCD) on the activity and structure of pectin methylesterase (PME) from orange was investigated.The pressures were 8-30 MPa,temperature 55 ℃ and time 10
Orange juice was treated by DPCD forl0,20,30,40,50 and 60 min under 40 MPa at 55 ℃.Physicochemical characteristics of DPCD treated orange juice series were determined and compared with that of the the
Inactivation of polyphenoloxidase (PPO) in cloudy apple juice induced by High-Pressure Carbon Dioxide (HPCD) combined with heat treatment was investigated in this study.Residual activity (RA) of PPO d
Juice processors have traditionally used thermal pasteurization to prevent deterioration by spoilage bacteria such as Lactobacillus plantarum and Saccharomyces cerevisiae; however,thermal processing m