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Chapter 4 The Energy Inherent in Our Waste

Szaky, Tom Berrett-Koehler Publishers ePub

Chapter 4

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© Chimpinski/Shutterstock.com

From newspapers to hot dogs, all objects have an inherent amount of energy—their “caloric value.” Simply put, caloric value is the amount of energy that is released when a particular thing is burned. Some objects burn at a positive caloric value, including candles, cigarettes, or basically anything that will continue to burn after you put a lighter to it to get it going. This can easily be calculated in a laboratory by measuring the amount of heat that the object releases per gram and subtracting the amount of energy that was used to get the burn going. Objects with a negative caloric value, on the other hand, consume more energy than they produce in the process of burning.

Calories from items with a positive caloric value are exactly the same type that we try to avoid when we go on our annual New Year’s diet. In other words, if you took sugary, buttery, oil-drenched, icing- and sprinkle-topped doughnuts (yum), they would burn much better (giving you more calories) than things like asparagus, celery, apples, and other foods with a negative caloric value.

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