Finite element prediction of transient temperature distribution in a grain storage bin.

A two-dimensional non-linear heat transfer model is presented to describe the transient temperature distribution in a cylindrical grain bin. In this model, the effects on grain temperatures of solar radiation, ambient air temperature and convection were simulated and complicated mixed boundary conditions on the grain surface and around the bin wall were considered during the simulation. The model was verified by experiments conducted in a weathered galvanized steel bin storing rice and was used to analyse the temperature distribution in the bin. The results show that the predicted temperatures agreed well with the measured ones. This study can be used as a tool for the optimum design of storage bins.

[1]  Jan C. Jofriet,et al.  Finite Element Prediction of Silage Temperatures in Tower Silos , 1987 .

[2]  L. Segerlind.  Applied Finite Element Analysis , 1976 .

[3]  H. B. Manbeck,et al.  Prediction of Bin-Wall Temperature Declines , 1988 .

[4]  J. Steele,et al.  Modeling of Temperature of Grain During Storage with Aeration , 1993 .

[5]  J. L. Woods,et al.  Low temperature moisture transfer characteristics of Barley: thin-layer models and equilibrium isotherms , 1994 .

[6]  L. Otten,et al.  Model comparisons of equilibrium moisture content of prunes in the temperature range of 15–45°C , 1999 .

[7]  Do Sup Chung,et al.  Transient Heat Transfer Within Wheat Stored in a Cylindrical Bin , 1973 .

[8]  J. L. Woods,et al.  The selection of sorption isotherm equations for wheat based on the fitting of available data , 1994 .

[9]  Da‐Wen Sun.  SELECTION OF EMC/ERH ISOTHERM EQUATIONS FOR SHELLED CORN BASED ON FITTING TO AVAILABLE DATA , 1998 .

[10]  J. L. Woods,et al.  SIMULATION OF THE HEAT AND MOISTURE TRANSFER PROCESS DURING DRYING IN DEEP GRAIN BEDS , 1997 .

[11]  J. L. Woods,et al.  The Moisture Content/Relative Humidity Equilibrium Relationship Of Wheat - A Review , 1993 .

[12]  W. E. Muir,et al.  A simulation model of temperatures in stored grain , 1975 .

[13]  A. E. McGarity,et al.  Solar Engineering Technology , 1985 .

[14]  J. L. Woods,et al.  Deep-bed simulation of the cooling of stored grain with ambient air: a test bed for ventilation control strategies , 1997 .

[15]  Da-Wen Sun,et al.  Comparison and selection of EMC/ERH isotherm equations for rice , 1999 .

[16]  Da-Wen Sun,et al.  Selection of EMC/ERH Isotherm Equations for Rapeseed , 1998 .

[17]  F. W. Bakker-Arkema,et al.  Drying and Storage Of Grains and Oilseeds , 1992 .

[18]  C. S. Chen,et al.  Simulation of temperature and moisture changes in wheat storage due to weather variability , 1975 .

[19]  J. L. Woods,et al.  Low temperature moisture transfer characteristics of wheat in thin layers , 1994 .

[20]  Digvir S. Jayas,et al.  THREE-DIMENSIONAL, FINITE ELEMENT, HEAT TRANSFER MODEL OF TEMPERATURE DISTRIBUTION IN GRAIN STORAGE BINS , 1990 .