Why do air conditioners and refrigerators have to keep turning on and off to keep the air within a temperature range, instead of adjusting their output to maintain an exact temperature?
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The compressor that moves the Freon through the refrigeration system is run at a constant speed to make the system run at best efficiency. You would have to ask the people who design these systems why they don’t make variable speed compressors. I would be delighted to have such a thing on the radio telescopes that I work on, because maintaining a very stable temperature in the equipment rooms is essential to collecting good data.
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