1. ETP GROUP 4 1. AHMAD FIRDAUS BIN MOHAMAD 11105 2. CATHERINE SIM MONG PHENG 11319 3. FAIMAIZE BIN IBRAHIM 11449 4. MUHAMMAD SYAWATUL EQWAN BIN MOHAMED SAPII 11500 5. NILTON CESAR MUGABE 11820 6. ARHIMNY HASDI AIMON 12301 SUPERVISOR AP Ir. DR. MOHD. AMIN B ABD MAJID SUPERVISOR AP Ir Dr Mohd Amin B Abd Majid

2. INTRODUCTION PROBLEM STATEMENT OBJECTIVE LITERATURE REVIEW METHODOLOGY DESIGN CONCEPT OPERATION SEQUENCE RESULTS ECONOMIC ANALYSIS CONCLUSION & RECOMMENDATIONS Q & A

3. BACKGROUND A cup of hot drink is always a menu of breakfast and normally one has to wait for a little while in order for the drink to cool down.

4. Handy water cooler is designed to ease one’s life by shortening the time needed for a hot drink to cool down to drinkable temperature. It reduces the water cooling time by 35%.

5. To design a device that can speed up the water cooling process To save the waiting time usually taken to cool down a hot drink

6. A plate-fin heat exchanger is made of layers of corrugated sheets separated by flat metal, typically aluminum, to create a series of finned chambers The fin is used to increase the structural integrity of the heat exchanger By using the fan, it will circulate the air surrounding the fin plate to increase the heat conduction rate

7. PROTOTYPE TESTING AND MODIFICATION ASSEMBLY HEAT SENSOR AND FAN CONTROLLER CIRCUIT FABRICATE THE FIN AND CASING EXPERIMENT ON BEST MATERIAL TO TRANSFER HEAT OBTAIN MATERIALS DETAILED DESIGN OF WATER COOLER PROBLEM DEFINITION AND GATHERING DATA

8. SHAPE & SIZE Cup material : Stainless Steel Cup Size: Width: Height: Water Volume: 200 ml Fin material : Aluminum Fin Dimension Width: 9cm Breath: 7cm Height: 3cm Casing Area: Width: 9cm Height: 11.5cm

9. Material Criteria  Thermal conductivity  Time to cool the water in each material MaterialsAdvantagesDisadvantages AluminumHigh thermal conductivity (120.0 – 180.0 W/ºCm) Not available as a cup in the market Stainless SteelGood thermal conductivity Available in market Thermal conductivity is not as high as aluminum (16.0 W/ºCm) Ceramic Available in market as a cup Thermal conductivity is not as high as stainless steel (1.5W/ºCm)

10. The schematic of heat sensor circuit using PSPICE

11. Automatic Controller Circuit This circuit consists of three main parts: - NTC Thermistor - IC 741 - Relay 12V Fan with has specification: Voltage: 12V Current: 0.6 A Power consume: 12 V x 0.6 A= 7.2 Watt

12. Ready to drink Take out the cup from the casing Wait until the fan stop moving Fan will automaticallyswitch on Put hot water into the casing of handy water cooler

13. Names-Muhammad Syawatul Eqwan Bin Mohamed Sapii -Faimaize Bin Ibrahim - Arhimny Hasdi Aimon - Ahmad Firdaus Bin Mohamad - Catherine Sim Mong Pheng - Nilton Cesar Mugabe Tasks-Design dimensions of prototype. -determine area of fin which maximizes heat transfer. -sketch the prototype using CAD software -design the circuit and use of sensor -Electrical components assembly. -develop relationship between drops of temperature with time under normal condition -estimation on time required to reach desired temperature using different cup material -identify possible ways to transfer heat from water in shortest time. -Research on ideas and improvements -Fabricate parts of prototype in laboratory

15. Week 1: Selection of project’s titleWeek 7,8 & 9: Evaluation and improvement of prototype Week 2: Background Study & Research about project Week 8: Submission of claim form 03 Week 3 : Preparation & submit project proposal Week 9: Evaluation of fabrication, preparation for poster & oral Week 4&5: Build circuit and mechanical part Week 10: Poster, oral presentation and prototype demonstration Week 6: Submission of progress report Construct prototype

18. Average time taken to cool from 93°c to 60°c: Under normal condition = 11 min 25 seconds Rate of cooling = (93°c -60°c)/(11.42min.0.2L) = 14.4°c/min.L With fin = 7 min 25 seconds Rate of cooling = (93°c -60°c)/(7.42min.0.2L) = 22.2 °c/min.L

19. Cool time reduction (in %) = [(11.42min – 7.42min) / 11.42min ]x 100% = 35%

20. ITEMPRICE (RM) Automatic Controller Fan Circuit14 Fan15 Casing15 Cup (Stainless Steel)2 Total46 Plate-Fin?

21. RECOMMENDATIONS 1. Develop further research and experiment on the design and material of the fin. 2. Increase the number of fin to increase the rate of transferring heat. 3. Develop handy water cooler to be more users friendly. CONCLUSION Handy water cooler is user friendly and was designed to save time in cooling the hot drink.