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Setup
This run was very similar to the first trial; plumber's putty was used to plug the hole in the bottom. This still may not have formed a good seal, however, as the putty did not adhere very well to the clay.

Results
See the attachments tab for the LoggerPro file of the data. After about two hours, the pots had reached roughly equilibrated to the ambient temperature. The odd curves in the large zeer pot's trace are due to the temperature probe falling over, being readjusted, and then falling again down again.

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the plot of test two, click to enlarge

Further Work

  • Toni's contacted an MIT group studying the zeer pot design; they were unable to bring the pot below 60degF (15degC).
  • There still may be leaking problems. We could attempt to better seal the bottom by actually using clay or by making our own pots.
  • Nothing in our research indicates that this design can take an object to below 10degC so the group will likely move on to other designs like the insulated box.