Systems and methods for detecting degradation of a component in an air conditioning system
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Solution Overview
Problem
Cooling systems face inefficiencies and downtime due to component degradation, such as refrigerant leakage and fouling, which are difficult to detect promptly and accurately, leading to potential damage and reduced performance.
Innovation Solution
A method is introduced that determines whether a cooling system is operating in a specific mode and at steady-state, evaluating rules to detect degradation symptoms, generating a degradation evaluation value, and triggering an alarm or countermeasure based on this evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional monitoring methods are used for cooling systems, then system operation continues without interruption, but component degradation is not detected promptly leading to potential damage and downtime
Solution Approach 1:
The system performs preliminary detection of degradation symptoms by continuously monitoring operating parameters and evaluating them against predefined rules before actual component failure occurs. This allows early identification of issues such as refrigerant leakage, fouling, or wear, enabling maintenance to be scheduled during normal operation rather than causing unplanned downtime.
Solution Approach 2:
The system establishes a feedback loop where operating parameters are continuously measured, evaluated against degradation criteria, and used to generate alerts or warnings. This closed-loop monitoring provides ongoing feedback about component health status, allowing operators to take corrective action before reliability deteriorates to the point of failure.
2Measurement precision
If continuous monitoring of operating parameters is implemented, then degradation can be detected early, but system complexity and measurement requirements increase
Solution Approach 1:
The monitoring system is segmented into modular functional blocks: parameter measurement modules, evaluation rule modules, and alert generation modules. Each module performs a specific function and can be independently configured. The evaluation criteria are segmented into multiple independent rules that assess different aspects of component health, allowing the system to scale complexity only as needed.
Solution Approach 2:
The monitoring system is designed with universal evaluation rules that can assess multiple types of component degradation (refrigerant leakage, fouling, wear) using the same basic framework. A single integrated system handles diverse monitoring needs by applying different evaluation rules to different operating parameters, reducing the need for separate specialized monitoring systems for each failure mode.
Data Source
AI summary
A method including: determining whether a cooling system is operating in a cooling mode, such that the cooling system is not operating in a reheat mode, a humidification mode or a dehumidification mode; determining whether the cooling system is operating in a compressor mode, such that the cooling system is not operating in a pump refrigerant economization mode; determining whether the cooling system is at steady-state; and if the cooling system is operating in the cooling mode and the compressor mode and is at steady-state, evaluating one or more rules to determine if a degradation symptom exists for the cooling system. The method further includes: subsequent to the evaluation, generating a degradation evaluation value to indicate whether the one or more rules are satisfied; and based on the degradation evaluation value, generating an alarm signal or performing a countermeasure.