Experimental characterization and modeling of microwave heating of oil palm kernels, mesocarps, and empty fruit bunches
The current work investigates the microwave heating and drying behavior of oil palm fresh fruits and bunches. Dielectric, thermal, and mechanical properties of oil palm kernels (OPKs), mesocarps, and empty fruit bunches (EFBs) were determined. New empirical models of the dielectric constant, loss fa...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
Taylor and Francis Inc
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/67369 |
| _version_ | 1848761548188680192 |
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| author | Law, Ming Chang, J. Chan, Stephanie Pui, D. You, K. |
| author_facet | Law, Ming Chang, J. Chan, Stephanie Pui, D. You, K. |
| author_sort | Law, Ming |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The current work investigates the microwave heating and drying behavior of oil palm fresh fruits and bunches. Dielectric, thermal, and mechanical properties of oil palm kernels (OPKs), mesocarps, and empty fruit bunches (EFBs) were determined. New empirical models of the dielectric constant, loss factor, elastic modulus, and yield stress as functions of moisture content were obtained for OPKs, mesocarps, and EFBs. The thermal conductivity of the mesocarps and EFBs was 0.458 and 0.0285?W/(m K), respectively. Thermal analyses showed that decomposition of OPKs, mesocarps, and EFBs started when the temperature exceeded 100°C. Multiphysics models that consider electromagnetic waves, moisture, and heat conservation as well as material deformation were developed for OPKs, mesocarps, and EFBs. The simulation results show that an EFB sample with high moisture content generated a high moisture gradient during heating, causing high stress that exceeded its yield stress. However, this effect occurred only during the initial heating. Our results show that microwave heating can aid the detachment of oil palm fruit from bunches before EFBs harden because of moisture loss. |
| first_indexed | 2025-11-14T10:33:25Z |
| format | Journal Article |
| id | curtin-20.500.11937-67369 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:33:25Z |
| publishDate | 2018 |
| publisher | Taylor and Francis Inc |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-673692019-05-23T03:23:44Z Experimental characterization and modeling of microwave heating of oil palm kernels, mesocarps, and empty fruit bunches Law, Ming Chang, J. Chan, Stephanie Pui, D. You, K. The current work investigates the microwave heating and drying behavior of oil palm fresh fruits and bunches. Dielectric, thermal, and mechanical properties of oil palm kernels (OPKs), mesocarps, and empty fruit bunches (EFBs) were determined. New empirical models of the dielectric constant, loss factor, elastic modulus, and yield stress as functions of moisture content were obtained for OPKs, mesocarps, and EFBs. The thermal conductivity of the mesocarps and EFBs was 0.458 and 0.0285?W/(m K), respectively. Thermal analyses showed that decomposition of OPKs, mesocarps, and EFBs started when the temperature exceeded 100°C. Multiphysics models that consider electromagnetic waves, moisture, and heat conservation as well as material deformation were developed for OPKs, mesocarps, and EFBs. The simulation results show that an EFB sample with high moisture content generated a high moisture gradient during heating, causing high stress that exceeded its yield stress. However, this effect occurred only during the initial heating. Our results show that microwave heating can aid the detachment of oil palm fruit from bunches before EFBs harden because of moisture loss. 2018 Journal Article http://hdl.handle.net/20.500.11937/67369 10.1080/07373937.2018.1439057 Taylor and Francis Inc restricted |
| spellingShingle | Law, Ming Chang, J. Chan, Stephanie Pui, D. You, K. Experimental characterization and modeling of microwave heating of oil palm kernels, mesocarps, and empty fruit bunches |
| title | Experimental characterization and modeling of microwave heating of oil palm kernels, mesocarps, and empty fruit bunches |
| title_full | Experimental characterization and modeling of microwave heating of oil palm kernels, mesocarps, and empty fruit bunches |
| title_fullStr | Experimental characterization and modeling of microwave heating of oil palm kernels, mesocarps, and empty fruit bunches |
| title_full_unstemmed | Experimental characterization and modeling of microwave heating of oil palm kernels, mesocarps, and empty fruit bunches |
| title_short | Experimental characterization and modeling of microwave heating of oil palm kernels, mesocarps, and empty fruit bunches |
| title_sort | experimental characterization and modeling of microwave heating of oil palm kernels, mesocarps, and empty fruit bunches |
| url | http://hdl.handle.net/20.500.11937/67369 |