Studies of convective drying using numerical analysis on local hardwood
| dc.contributor.author | Lee, Kok Onn | |
| dc.date.accessioned | 2014-11-18T07:48:33Z | |
| dc.date.available | 2014-11-18T07:48:33Z | |
| dc.date.issued | 2007 | |
| dc.description | Master | en_US |
| dc.description.abstract | In wood industry, drying of wood is the most energy extensive process that incurs a lot of cost and time. This process however is one of the most important, which enhances the mechanical properties and protects the wood against insect and fungal attack. Hardwood is one of Malaysia most important commodity export and present work is focused on Dark Red Meranti. This present work discussed the numerical analysis of wood drying by convective air using Finite Element Method and experimental investigation by using heater dryer. The finite element model is a time stepping 1 dimension model and solved using Galerkin’s weighted residual method. In this model, air flow is solved initially in its flow direction to obtain surface condition of wood piece, which then be used to solve the heat and mass transfer equation inside the wood piece. Parametric study was then conducted using the mathematical model to study the impact of air temperature, relative humidity, air velocity, wood thickness and initial moisture content of wood piece on drying. To verify the mathematical model, an electrical heater cum heat pumpassisted dryer was design and developed. Heat provided into the dryer by heaters and a one horsepower heat pump, which its refrigerant is R-22. Experiments were conducted using this test rig and variation between theoretical data and experimental data is within 3% to 6%. This shows that there is good agreement between theoretical data and experimental data. However for studies presented here, only electrical heater was utilized. | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/588 | |
| dc.language.iso | en | en_US |
| dc.subject | Science Physic | en_US |
| dc.subject | convective drying | en_US |
| dc.subject | numerical analysis | en_US |
| dc.subject | local hardwood | en_US |
| dc.title | Studies of convective drying using numerical analysis on local hardwood | en_US |
| dc.type | Thesis | en_US |
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