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gravitas_shortage t1_irf25st wrote

Reply to comment by Loobeensky in Stanley Legendary 1,9 l, water lukewarm after less than 30 hours by Loobeensky

It can go two ways:

- Thermal mass is a major factor.

- The ratio of surface area to volume in a big bottle is much smaller, so the heat loss is much smaller.

Both ways can be true and act in opposite directions.

We need thermal measurements over time and volume, OP. For Science.

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gravitas_shortage t1_irf6hhz wrote

Also, I'm glad to report that I just checked, and it is not the case that there is a point of emptiness at which the larger bottle gets a smaller volume-to-area ratio than the smaller one. So, no need to get a smaller bottle depending on your expected consumption in order to preserve the heat. Whew.

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