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Heat Transfer from Water Bottles

In this study, we assess various water bottles to determine which keeps ice water cold the longest, crucial for cyclists. We compare five types: a traditional bottle, an Aquafina bottle, a thermos, an insulated bottle, and a Nalgene bottle. By pouring equal amounts of ice water into each and measuring temperature over two hours, we reveal insights into heat transfer rates. Our results show that thermoses outperform all others, suggesting that investing in high-quality insulated bottles is worth it for cyclists who prefer cold water during rides.

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Heat Transfer from Water Bottles

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Presentation Transcript

  1. Heat Transfer from Water Bottles Daniel Carlson Daniel Ricks

  2. Introduction • Cyclists want their water to stay cold • What water bottle will keep ice water cold the longest? • Is it worth spending the extra money for a fancy water bottle?

  3. Introduction • 5 Bottles Tested • Traditional Bottle • Aquafina Bottle • Thermos • Insulated Bottle • Nalgene Bottle

  4. Heat Transfer Problem • Pour equal amounts of ice water in the bottles • Measure the temperatures for 2 hours

  5. Assumptions • Assume the bottles are cylinders • Neglect heat transfer through lids • Assume all the bottles are roughly the same size

  6. Heat Transfer Problem • Bottles with small k values results in a small rate of heat transfer

  7. Results • The thermos performed the best • The insulated bottle also performed well • Traditional bottles are similar in results • k values for bottles

  8. Conclusion • Buying an expensive bottle is worth it (if you like cold water) • Using a thermos traditionally used for hot beverages is even better than an insulated water bottle • A thermos keeps water cold twice as long as a plastic water bottle

  9. Appendix Solving the equation for k gives:

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