Refrigerator: Food preservation was a serious challenge before the discovery of refrigerators. The best options were to suspend spoilable items in the rivers, wells, or at the bottom of ponds. In spite of that, sometimes stable foods were heavily salted, spiced, pickled, canned or dried to prevent bacterial growth. With the industrial age, we began to understand thermodynamic cycles and through an interplay of pumps, valves, and heat exchange; we learned to cool food to arbitrary temperatures using the refrigerator cycle. So, Let's learn about its three crucial components and understand how they come together to produce the refrigerator’s cooling cycle. Question: What is the basic idea behind a refrigerator? Answer: It removes heat from the compartment and pumps it to the outside. Refrigerators continually take away heat from the air in the food compartment and dump it into the environment. The internal compartment of a refrigerator is approxima...
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