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The concept of refrigeration dates back to ancient civilizations, where people used ice and snow to cool their food and drinks. However, it wasn't until the 19th century that the first mechanical refrigeration systems were developed. The first air conditioning system was invented by Willis Carrier in 1902, which used the principles of refrigeration to control humidity and temperature. Since then, refrigeration and air conditioning have become essential technologies in various industries, including food preservation, healthcare, transportation, and residential and commercial buildings. : Features a vast array of solved examples
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THEORY IS INSUFFICIENT. TO UNDERSTAND THE CYCLE, YOU MUST FEEL THE HEAT. THEORY IS INSUFFICIENT
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