Water Bottle Temperature

1. Effect of Water
Bottle Material on
Water Temperature
BY ALEX RYAN AND ZACK MONTGOMERY

2. Objective
Determine effect of material of water bottle on water temperature over
time
“Insulated” bottles vs. regular water bottles
Holding similar volumes of water in sunlight over same time period
Comparing final temperatures and temperature changes
Determining governing constants and testing feasibility

3. Materials
Materials
◦ 4 different water bottles made of various materials
◦ HOBO data logger
◦ Water and Sunlight
◦ Stopwatch
◦ Dual-Range Light Meter
◦ Tape measure
◦ Thermometer

4. Methods
Fill water bottles with same volume of water
Take initial water temperature reading with a thermometer and a solar
light level reading
Place bottles in sunlight with temperature probes attached to HOBO
data logger
Allow bottles to sit in the sun for set length of time
Record final temperature with thermometer and final solar light level
readings

5. Results
Errors in the probe readings
All results reported as actual vs probable
-200
-100
0
100
200
300
400
500
600
0 50 100 150 200
Temperature(°F)
Time Reading (#)
Water Temperature Over Time
Stainless Steel
Insulated
Dasani
Gatorade
0
10
20
30
40
50
60
70
80
90
100
0 50 100 150 200
Temperature(°F)
Time Reading (#)
Water Temperature Over Time
Stainless Steel
Insulated
Dasani
Gatorade

6. Stainless Steel Water Bottle
Initial Temperature Reading – 9.22°C
Final Temperature Measurement – 28.7°C
Temperature Change – 19.48°C
0
10
20
30
40
50
60
70
80
90
100
0 50 100 150 200
Temperature(°F)
Time Reading (#)
Stainless Steel
-200
-100
0
100
200
300
400
500
600
0 50 100 150 200
Temperature(°F)
Time Reading (#)
Stainless Steel

7. Insulated Water Bottle
Initial Temperature Reading – 6.78°C
Final Temperature Reading – 24.11°C
Temperature Change – 17.33°C
0
10
20
30
40
50
60
70
80
0 50 100 150 200
Temperature(°F)
Time Reading (#)
Insulated
-150
-100
-50
0
50
100
150
200
0 50 100 150 200
Temperature(°F)
Time Reading (#)
Insulated

8. Dasani Water Bottle
Initial Temperature Reading – 13.22°C
Final Temperature Reading – 28.39°C
Temperature Change – 15.17°C
-120
-100
-80
-60
-40
-20
0
20
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0 50 100 150 200
Temperature(°F)
Time Reading (#)
Dasani
0
10
20
30
40
50
60
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80
90
0 50 100 150 200
Temperature(°F)
Time Reading (#)
Dasani

9. Gatorade Water Bottle
Initial Temperature Reading – 10.89°C
Final Temperature Reading – 29.39°C
Temperature Change – 18.5°C
-120
-100
-80
-60
-40
-20
0
20
40
60
80
100
0 50 100 150 200
Temperature(°F)
Time Reading (#)
Gatorade
0
10
20
30
40
50
60
70
80
90
0 50 100 150 200
TemperatureReading(°F)
Time Reading (#)
Gatorade

10. Stella Model

11. Stella Results
Material Solar Absorptivity (αs) Emissivity (ε)
Stainless Steel 0.9 0.3
Insulated Bottle 0.9 0.9
Gatorade Bottle 0.9 0.9
Dasani Bottle 0.8 0.9
G=700 W/m^2
V=.00088 m^3
Cp=4188 J/kg*K
Ρ=979.4 kg/m^3

12. Discussion
Large amount of unaccounted for data
◦ Deleted for “suspected” values
◦ Factors assumed negligible
◦ Shape, thickness, etc.
Still shows general expected trend
Tests would have to be redone with more repetitions and stricter
control of variables
Able to get similar values theoretically to experimental values using
reasonable variables

13. Conclusions
Insulated has second lowest temperature
change but had lowest final temperature
Had lowest starting temperature but
settled at temperature lower than others
All other water bottles ended around the
same temperature

14. Appendix