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Figure 4 - Boiling time (minutes) vs. average water temperature (°C) for parallel cooking tests.

To further examine the difference in temperature verses time, figure 5 shows the different temperatures after 60 minutes of cooking in the form of a bar graph.  The data shows that the difference between 1 and 2 pots of water is somewhat small---a difference of 3.3%.  However, the drop in temperature increases somewhat drastically from 2 pots to 3 pots, after 60 minutes of cooking. It is important to note that this drop, nevertheless, is not a decrease in time per unit thermal mass of water. The data shows conclusively that the greater the thermal mass of water heated in parallel the greater the efficiency.


Figure 5--The difference in temperature reached after 60 minutes of cooking during the parallel heating tests.

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