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Originally Posted by HungLikeJesus
Melting one pound of ice requires input of 143 Btu of energy. To raise the temperature of the melted water from 32°F to 98°F takes another 66 Btu/lb, for a total of about 210 Btu per pound of ice. 1 Btu ~ 250 calories*.
*Food energy is usually measured in Calories, which are really kilocalories, so 1 Cal = 1 kcal = 1000 calories.
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So, (250 little-c-calories) times (210 Btu) divided by 1000 = 52.5 regular food Calories per pound of ice I crunch? That's not bad, but I'd kind of hoped for a little more for my efforts. Maybe the chewing burns off some calories too?