Method for controlling freezing capacity of a fixed-frequency AC ice-water system
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United States of America Patent
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Sep 10, 2013
Grant Date -
Jan 5, 2012
app pub date -
Oct 14, 2010
filing date -
Jun 30, 2010
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Abstract
A method for controlling the freezing capacity of a fixed-frequency freezing AC ice-water system, by using temperature buffer difference of individual requirement ends to control the number of operating compressors in a fixed-frequency chiller and make each of the operating compressors have a usage rate close to 100%. Further, various operating procedures are defined for the requirement ends and each of the operating procedures has an individually defined high-low temperature range such that the freezing capacity supply cycle or startup cycle of the fixed-frequency chiller can be adjusted by using the high-low temperature ranges of the operating procedures as temperature buffer strips, thereby allowing the compressors in the fixed-frequency chiller to operate collectively in order to save energy.
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