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# Computer Based Thermal Conductivity Coefficent Measurement Device #SciChallenge2017

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# Computer Based Thermal Conductivity Coefficent Measurement Device #SciChallenge2017

#SciChallenge2017 Project
Prepared By : Erdem Çamlıoğlu & Mustafa Berk Alkoç

#SciChallenge2017 Project
Prepared By : Erdem Çamlıoğlu & Mustafa Berk Alkoç

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### Computer Based Thermal Conductivity Coefficent Measurement Device #SciChallenge2017

1. 1. Computer Based Thermal Conductivity Coefficent Measurement Device Erdem Çamlıoğlu – Mustafa Berk Alkoç – Advisor: Ayhan Aykara #SciChallenge2017
2. 2. The Aim of The Project 🌏 Providing energy efficiency by reducing energy loss to minimum level.
3. 3. “The Importance of Heat Insulation When examined from the point of the view of daily use, the individual users in the houses can not be in an economical way as a result of the heat loss they experience. From a scientific point of view, it may be necessary to have good heat insulators or good heat conductors for varying conditions in order to ensure that the heat value is a certain constant and is not influenced by the environment.
4. 4. Presentation Content Fourier Heat Transfer Law Design Stage of The Device Circuit Materials Algorithm Microcontroller Interface
5. 5. Fourier Heat Transfer Law Heat conduction is the passage of heat from the hot zone to the cold zone in solid materials or fluids. In this equation, ΔT (K) represents the temperature difference between the surfaces of a solid material with different surface temperatures such as T1 and T2 shown below. ∆𝐐 ∆𝐭 = −𝐤. 𝐀. ∆𝐓 ∆𝐱
6. 6. Design Stage of The Device At this stage, we wanted to create a portable instrument with a wide measurement range.
7. 7. Circuit Materials Arduino Uno R3 Heat and Temperature Sensor (DS18B20) Heat Source (Processor) Black Box LCD Display and I2C Module (TC1602D) Button, Buzzer, Material Type Indicator Box and Reset Button
8. 8. Circuit Materials Power Stabilization Circuit Connection of Temperature Sensors
9. 9. Circuit Materials
10. 10. “ Controlling the temperature of the heat source in the medium to be measured in the circuit with the sensors(35℃). Be alerted until you are ready. Transfer of the data from the two sensors to the corresponding file via the created microcontroller interface after measurement starts. Recording of data at specified intervals according to the state of the measured material of incoming heat difference data. Applying the recorded difference data on the formula using the dimension and thickness information of the material and instantaneous transfer of the information. Audible warning and recording of the heat transfer coefficient when the average time of the measurement results is reached. 1 2 3 4 5
11. 11. Work Process Data Collecting The values ​​of the heat transfer coefficient of the materials to be measured in the project work were obtained by using reference points from certain sources and then recorded for use in measurement results. Measurement Phase The algorithm created on the computer during the project, reads the given and received heat values ​​and processes them in the system. Result Phase Accepted values ​​are recorded by processing with the form on the system and can be taken as a graph.
12. 12. Materials Conductivity Detection The conductivity grade should be below 0.065 (W/mK). Insulator Materials Conductive Materials
13. 13. %1,61Error share for conductive materials, %2,03Error share for insulator materials.
14. 14. Microcontroller Interface
15. 15. Desktop Control
16. 16. Accessible from the smart devices
17. 17. 17
18. 18. Conductive Materials 76% Insulator Materials 24% Conductive Materials Insulator Materials
19. 19. No. Material Heat Transfer Coefficient (W/m.K) Heat Transfer Coefficient (Measured) (W/m.K) 1. Stainless Steel 16 17± 0,27 2. Steel 46 46± 0,74 3. Virgin 385 220* 4. Iron 80 80± 1,28 5. Yellow Brass 85 85± 1,36 6. Aluminum 215 212± 3,41 7. Lead 34.7 36.3± 0,58 8. Zinc 116 116± 1,86 9. Wood 0.072 0.073± 0,001 10. Glass 0.8 0.8± 0,12 11. Ceramic 1.05 1.10± 0,01 12. Cardboard 0.21 0.22± 0,003 13. Plastic 0.13 0.13± 0,002 14. Plaster 0.71 0.72± 0,01 15. Brick 0.6 0.6± 0,009 16. Polymethylmet hacrylate 0.19-0.25 0.24± 0,003 * The maximum measuring range of the device is 220 W/m.K. Conductive Materials
20. 20. No. Material Heat Transfer Coefficient (W/m.K) Heat Transfer Coefficient (Measured)(W/m.K) 1. Felt 0.04 0.039± 0,0007 2. Paper 0.05 0.05± 0,001 3. Styrofoam 0.039 0.042± 0,0008 4. Cotton 0.04 0.04± 0,0006 5. Polyester 0.05 0.05± 0,001 Insulator Materials
21. 21. Device – Market Comparison Large Measuremen t Range Portable and Computer- aided Economic 🔌
22. 22. Result  Measurement can be taken in a short time (5-10 minutes) and transferable to computer.  Economic  Low energy use  Portable  Usable with USB input  Open to improvement  Measurement of materials with optional values (Maximum 7 cm thickness and 2 cm height)  An audible warning is given when the heat source reaches the required temperature and the result is received.  Low error share  Measurement range is 0-220 W/mK
23. 23. Thank You!
24. 24. REFERENCES ▸ Yalçın, C. (2008). Temel Fizik(Cilt 1), Arkadaş Yayınevi, Ankara ▸ Serway, R. (2007). Fen ve Mühendislik İçin Fizik(Cilt 1), Palme Yayıncılık, Ankara ▸ Taşdemir, C.(2015). Arduino, Dikeyeksen Yayınları, İstanbul. ▸ Durmuş, A. (2011). Isı İletim Katsayısının Ölçümü Deney Föyü, Ondokuz Mayıs Üniversitesi Mühendislik Fakültesi Makine Mühendisliği Bölümü, 1-9, Erişim Tarihi: 14.12.2016, ▸ http://mf.omu.edu.tr/makina/wp-content/uploads/sites/10/2011/12/deney-Is%C4%B1-%C4%B0letim- katsay%C4%B1sn%C4%B1n-tespiti-yedek.pdf ▸ DS18B20 Programmable Resolution 1-Wire® Digital Thermometer, Erişim Tarihi : 26.12.2016, http://cdn.sparkfun.com/datasheets/Sensors/Temp/DS18B20.pdf ▸ Thermal Conductivity of some common Materials, Erişim Tarihi : 17.11.2016, http://www.engineeringtoolbox.com/thermal-conductivity-d_429.html ▸ Physics Resources Datasabe, Thermal Conductivities, Erişim Tarihi : 24.12.2016, http://www.physics.usyd.edu.au/teach_res/db/d0005e.htm ▸ Thermal Conductivity, Erişim Tarihi : 27.12.2016, http://hyperphysics.phy-astr.gsu.edu/hbase/Tables/thrcn.html#c1