| Author | Diep, Le Van |
| Call Number | AIT Thesis no.AE-93-14 |
| Subject(s) | Grain--Drying
|
| Note | A thesis submitted in partial fulfi ll ment of the requirements for the degree of Master of Engineering. |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. AE-93-14 |
| Abstract | Drying Simulation was original l y developed and compiled in Microsoft BASIC 7.0 to provide a PC-based user-interactive environment for computer simulation of forc e d-convection in store dry i ng and aeration of rough rice (JINDAL and MART I NEZ, 1992). This package re l ies on the modified Thompson et al. (1968) and the Thompson (1992) near-equilibr i um models to simu l ate grain drying and rewetting in deep beds. Drying simu l ation was further deve l opment and modified for use with soybeans and corn. More than sixteen new features were added for making the s imu l ation program more user -f r i endly and easi l y accessible. Some important new features are the flexib il ity of program to select grain types as wel l as the equations used in the models for a simu l ation run. Equations that users can se l ect correspond to thin- l ayer drying, th i n- layer rewetting, equi l ibr i um moisture content (EMC), l atent heat of vapor i zat ion and specific heat. The data fi l es for grains and air in non- uniform conditions can be created or edited direct l y in the simulation program. The HELP feature provides help on-line to users. The s imu l ation results can now be saved to f il es, viewed on the screen or printed out with a better format. T he energy requ i rements were also displayed on screen during a simulation run. The package was also modif ied to run on a monochrome monitor. The sens i tivity of the simu l ated moisture contents was anal yzed with regard to the equat i ons used in the simu l at i on models. Results showed that the sel ection of thin-layer drying and rewetting equations greatly influenced simulated resu l ts. Latent heat of vapor i zation and spec i fic heat equations had minimal effects on the simulated moisture contents. A comparison of reported experimenta l and s i mu l ated moisture contents was al so made. Resu lt showed that, genera ll y,a good agreement between the simulated resu l ts and reported data for rough r ice. However, it was not possible to make such comparisons extensive ly for soybeans and corn in absence of the avallabllity of experimenta l data in the pub li shed l iterature. |
| Year | 1993 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. AE-93-14 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Jindal, V.K. |
| Examination Committee(s) | llangantileke, S.G.;Athapol Noomhorm;Vincent, Jean-Claude |
| Scholarship Donor(s) | Ecumenical Scholarships Programme Germany |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1993 |