Method and system for controlling air conditioner water-chilling unit, and air conditioning system thereof
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Solution Overview
Problem
In air conditioning systems with multiple water chilling units sharing a waterway, installation position deviations and temperature sensor differences lead to premature shutdown of some units and frequent startups, resulting in poor temperature control equilibrium and reduced service life.
Innovation Solution
A control method and system that generates and manages standby sequence numbers for air-conditioner water chilling units based on received standby requests, determining which units to close according to preset rules, ensuring balanced operation and avoiding frequent start-stop cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If temperature control is based on water temperature values collected by temperature sensor packages, then the control system can determine when to start or standby air-conditioner water chilling units, but installation position deviations and sensor differences cause some units to reach closing conditions earlier than others, resulting in frequent start-stop cycles and poor overall equilibrium control effect
Solution Approach 1:
The system performs preliminary assessment of standby requests from multiple air-conditioner water chilling units before executing shutdown actions. By evaluating the number of standby requests and generating standby sequence numbers in advance, the system avoids immediate shutdown decisions that would cause frequent cycling. This preliminary action allows the controller to coordinate shutdown timing across multiple units, ensuring they operate for more balanced durations and reducing frequent start-stop cycles.
2Reliability
If multiple air-conditioner water chilling units share the waterway, then the system can provide redundant cooling capacity and improve reliability, but temperature sensor package differences and installation position deviations lead to unbalanced operation times and frequent start-stop cycles
Solution Approach 1:
The controller continuously monitors standby requests from multiple air-conditioner water chilling units and uses this feedback to generate coordinated shutdown commands. By counting the number of standby requests received and using this information to generate standby sequence numbers, the system creates a feedback loop that balances operation times across units. This feedback mechanism resolves the control complexity by providing a systematic method to manage multiple units sharing a waterway, ensuring they operate in a more均衡 manner without requiring complex individual control for each unit.
Data Source
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AI summary
This disclosure provides a control method and control system for two or more air-conditioning water chilling units, and air conditioning system. The control method includes: receiving generated by the air-conditioning water chilling units based on a standby condition; determining whether or not two or more standby requests are received; generating standby sequence numbers of the air-conditioning water chilling units according to the standby requests in case where two or more standby requests are received; and closing the air-conditioning water chilling units according to a preset rule based on the standby sequence numbers. When a plurality of air-conditioning water chilling units are used in combination, the control method, control system, and air conditioning system provided by this disclosure can avoid frequent start and stop of the air-conditioning water chilling units, increases the service time of the air-conditioning water chilling units and improves the overall equilibrium control effect.