Systems and methods for modeling of chiller efficiency and determination of efficiency-based staging
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United States of America
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Feb 25, 2025
Grant Date -
Nov 23, 2023
app pub date -
Apr 25, 2023
filing date -
Apr 25, 2023
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Abstract
Multi-compressor chiller systems can be efficiently operated by determining real time efficiency curves for the compressors currently in operation, along with any compressors that may be added to address demand, and using these efficiency curves to determine changes to compressor operation to improve efficiency in meeting chiller demand. The efficiency curves can be parabolic curves. The data used to determine the efficiency curves can be obtained through operation at a variety of lift points and a variety of load points within those lift points. The efficiency curves can be solved to find intersections where there may be staging points for adding or subtracting compressors from operation to efficiently meet demand. This operation can be automated through a controller of a control system for the multi-compressor chiller system.
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