METHOD OF CONTROL FOR ECONOMIZER OF TRANSPORT REFRIGERATION UNITS
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United States of America Patent
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Issued Date -
Apr 16, 2020
app pub date -
Jun 7, 2018
filing date -
Jun 8, 2017
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Abstract
A method of operating a refrigeration system includes initiating a compressor shutdown operation, determining a difference in a saturation temperature at a port of a compressor of the refrigeration system and an ambient temperature and comparing the difference in the saturation temperature and ambient temperature with a threshold. If the difference in the saturation temperature and ambient temperature is less than or equal to the threshold, a pump down operation is performed and if the difference in the saturation temperature and ambient temperature exceeds the threshold, a compressor shutdown operation is completed.
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