ETP GROUP 4 1. AHMAD FIRDAUS BIN MOHAMAD 11105 2. CATHERINE SIM MONG PHENG 11319 3. FAIMAIZE BIN...
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Transcript of ETP GROUP 4 1. AHMAD FIRDAUS BIN MOHAMAD 11105 2. CATHERINE SIM MONG PHENG 11319 3. FAIMAIZE BIN...
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ETP GROUP 41.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
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INTRODUCTIONPROBLEM STATEMENTOBJECTIVELITERATURE REVIEW METHODOLOGY DESIGN CONCEPT OPERATION SEQUENCERESULTS ECONOMIC ANALYSISCONCLUSION & RECOMMENDATIONS Q & A
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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.
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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%.
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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
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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
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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
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Material Criteria Thermal conductivity Time to cool the water in each material
Materials Advantages Disadvantages
Aluminum High thermal conductivity (120.0 – 180.0 W/ºCm)
Not available as a cup in the market
Stainless Steel
Good thermal conductivityAvailable 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)
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The schematic of heat sensor circuit using PSPICE
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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 APower consume: 12 V x 0.6 A= 7.2 Watt
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Names -Muhammad Syawatul Eqwan BinMohamed 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
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Week 1: Selection of project’s title
Week 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 reportConstruct prototype
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(11.43min; 60°C)(7.43min; 60°C)
y = -0.048x + 89.66R² = 0.972
y = -0.070x + 90.04R² = 0.988
0
10
20
30
40
50
60
70
80
90
100
0 100 200 300 400 500 600 700 800
Tem
pera
ture
(°C)
Time (s)
Temperature Vs Time (Stainless Steel Trial 3)
Without Fin and fan
With Fin and Fan
Linear (Without Fin and fan)
Linear (With Fin and Fan)
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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
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Cool time reduction (in %)= [(11.42min – 7.42min) / 11.42min ]x 100%= 35%
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ITEM PRICE (RM)
Automatic Controller Fan Circuit 14
Fan 15
Casing 15
Cup (Stainless Steel) 2
Total 46
Plate-Fin?
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RECOMMENDATIONS1.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.
CONCLUSIONHandy water cooler is user friendly and was
designed to save time in cooling the hot drink.
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