A method for optimizing the operation energy efficiency of a multi-connected variable refrigerant flow central air conditioning system

By collecting data and dynamically optimizing the multi-split air conditioning system, the problems of low heat dissipation efficiency and inaccurate water resource allocation under high temperature conditions were solved, thereby improving the system's energy efficiency and stability and promoting the coordinated operation of the main units.

CN122191718APending Publication Date: 2026-06-12SHEN ZHEN KANGSHENG IND CO LTD
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Patent Information

Application Number
CN202610511958.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-17
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

Multi-split air conditioning systems have low heat dissipation efficiency in high-temperature environments. Relying solely on tap water spraying is costly and prone to scaling. They lack precise allocation of limited water resources based on real-time operating conditions and coordinated control with the main unit, resulting in the potential for energy efficiency improvement not being fully explored.

Method used

By periodically collecting data from the outdoor unit module, dynamically calculating the sprinkler efficiency weight, predicting the condensate generation flow rate, optimizing the sprinkler scheduling instructions, and combining system energy efficiency feedback for self-learning correction, a collaborative operation strategy is generated to achieve precise scheduling of condensate and collaborative control of the main unit.

Benefits of technology

It achieves a more significant improvement in overall system energy efficiency under the same water volume conditions, maintains the accuracy of optimization decisions in the long term, promotes deep cooperation between the spray subsystem and the air conditioning unit, avoids energy waste and equipment failure, and improves the stability of system operation.

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Abstract

The present application relates to the field of construction and operation of building central air conditioning system, and discloses a method for optimizing and improving operation energy efficiency of multi-connected variable refrigerant flow central air conditioning system, comprising periodically collecting local ambient temperature of each outdoor unit module, air conditioning system operation parameters and condensate water related data; based on the collected data, dynamically calculating and updating spraying efficiency weight parameters for evaluating the system energy efficiency improvement effect brought by spraying each outdoor unit module; based on the collected air conditioning system operation parameters and external environment information, predicting condensate water generation flow in the future set period, and calculating the total available condensate water budget in the period. The present application realizes accurate scheduling of limited condensate water resources by constructing an optimization model with total available condensate water budget as constraint and maximizing estimated energy efficiency benefit as target, and solving to generate differentiated spraying instructions, thereby achieving better overall system energy efficiency improvement under the same water quantity condition.
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