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| ORE7122 | Plate Production Pressl.Heat.V.Rut.Tr | 3+0+0 | ECTS:7.5 | | Year / Semester | Spring Semester | | Level of Course | Third Cycle | | Status | Elective | | Department | DEPARTMENT of FOREST INDUSTRY ENGINEERING | | Prerequisites and co-requisites | None | | Mode of Delivery | | | Contact Hours | 14 weeks - 3 hours of lectures per week | | Lecturer | Prof. Dr. Hülya KALAYCIOĞLU | | Co-Lecturer | No | | Language of instruction | Turkish | | Professional practise ( internship ) | None | | | | The aim of the course: | | In this course, students; The basis and calculation of the heat and moisture transfer model, understanding the heat and moisture transfer mechanisms that occur during pressing, having knowledge of the concepts of conduction convection and radiation heat transfer in presses, understanding the modeling of the capillary movements of liquid and vapor in the plate draft during pressing, understanding the bonded structures in the cell walls of the wood. It is aimed to increase knowledge on the diffusion of water, the effect of plate draft density and void volume on heat and moisture transmission in pressing, and the application of heat and moisture transfer theorem to the plate.
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| Programme Outcomes | CTPO | TOA | | Upon successful completion of the course, the students will be able to : | | | | PO - 1 : | Gains knowledge about the physical changes that occur during the pressing of wood-based boards and increases their knowledge in interpreting and finding solutions. | 2 - 3 - 4 - 8 | | | PO - 2 : | It increases knowledge about the structure of the presses in wood-based board production, the physical and mechanical changes that occur in the presses and the solution to possible problems, and reaches the knowledge to research solutions and work on new methods.
| 3 - 5 - 8 | | | PO - 3 : | He searches for solutions to heat and moisture transfer problems with the homework given. Generates suggestions. It carries out studies to shorten the press time. | 3 - 5 - 7 | | | CTPO : Contribution to programme outcomes, TOA :Type of assessment (1: written exam, 2: Oral exam, 3: Homework assignment, 4: Laboratory exercise/exam, 5: Seminar / presentation, 6: Term paper), PO : Learning Outcome | | |
| The basic and calculation of heat and moisture model. Research of heat and moisture transfer mechanism is needed for model. Heat transfer concept with conduction, convection and radiation in pressing. Capillary movement of liquid and steam is modeled during pressing. Control of mat density and free volume, bound water diffusion in wood cell wall. Transfer theorem of heat and moisture apply to board |
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| Course Syllabus | | Week | Subject | Related Notes / Files | | Week 1 | Definition of heat transfer, physical structure of heat transfer and affecting factors. | | | Week 2 | Moisture states in wood, wood-water relations, relations between humidity and heat. | | | Week 3 | Definition of moisture transfer, its physical structure and affecting factors. Mechanism of hot pressing of wood based boards | | | Week 4 | The basis and calculation of the heat and moisture transfer model. | | | Week 5 | The heat source required for the model is the heat and moisture transfer mechanism. | | | Week 6 | Concepts of conduction, convection and radiation heat transfer in presses. | | | Week 7 | Modeling the capillary movements of liquid and vapor in the capiler blank during pressing. | | | Week 8 | Midterm exem | | | Week 9 | Diffusion of bound water in the cell walls of wood, | | | Week 10 | Control of sheet paste density and void volume in pressing. | | | Week 11 | Application of heat and moisture transfer theorem to the plate | | | Week 12 | Relationships between heat and moisture transfer and the formation of the plate. | | | Week 13 | The effect of heat and moisture transfer on the quality of the board | | | Week 14 | Working on weekly homework assignments (depending on topics) | | | Week 15 | Working on weekly homework assignments (depending on topics) | | | Week 16 | Final homework and exam | | | |
| 1 | Troppová, E., ?vehlík, M., Tippner, J., & Wimmer, R. (2015). Influence of temperature and moisture content on the thermal conductivity of wood-based fibreboards. Materials and Structures, 48, 4077-4083. | | | 2 | Glass, SV (2007). İzotermal ve izotermal olmayan koşullar altında ahşap esaslı malzemelerdeki nem taşınımının ölçümleri. | | | 3 | Humphrey, PE (1989). Kuru şekillendirilmiş ahşap bazlı kompozitlerin sıcak preslenmesi. Bölüm II. Isı ve nem transferi için bir simülasyon modeli ve tipik sonuçlar. | | | 4 | Haddouche, M., Martini, F., Chaouch, M. ve Ilinca, A. (2024). Isıl konfor koşulları altında ahşap bazlı malzemelerin termo-hidrik çalışması. Malzemeler , 17 (5), 1177. | | | 5 | Kamke, F. A. (1989). Thermal conductivity of wood-based panels. In Thermal Conductivity 20 (pp. 249-259). Boston, MA: Springer US. | | | 6 | Sonderegger, W., & Niemz, P. (2012). Thermal and moisture flux in soft fibreboards. European Journal of Wood and Wood Products, 70(1-3), 25-35. | | | 7 | Zarr, R. R. (1995). Heat and moisture transfer in wood-based wall construction: measured versus predicted (Vol. 173). US Department of Commerce, Technology Administration, National Institute of Standards and Technology. | | | |
| Method of Assessment | | Type of assessment | Week No | Date | Duration (hours) | Weight (%) | | Mid-term exam | 9. Hafta | | | 30 | | Homework/Assignment/Term-paper | 12 | | | 20 | | End-of-term exam | 16. hafta | | | 50 | | |
| Student Work Load and its Distribution | | Type of work | Duration (hours pw) | No of weeks / Number of activity | Hours in total per term | | Yüz yüze eğitim | 3 | 14 | 42 | | Sınıf dışı çalışma | 3 | 14 | 42 | | Uygulama | 2 | 12 | 24 | | Ödev | 3 | 10 | 30 | | Proje | 3 | 8 | 24 | | Dönem sonu sınavı için hazırlık | 3 | 14 | 42 | | Dönem sonu sınavı | 2 | 1 | 2 | | Total work load | | | 206 |
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