Equipment management system and refrigerant amount estimation method
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Solution Overview
Problem
Conventional methods struggle to accurately estimate the amount of refrigerant in air conditioning systems in real-world environments due to varying air conditioning loads and outdoor temperatures, requiring special operations and increasing development costs.
Innovation Solution
An equipment management system that acquires and processes temperature, electrical, and environmental data to estimate refrigerant amounts using preset equipment and installation information, allowing for accurate refrigerant estimation without special operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional refrigerant estimation methods are used under constant air conditioning loads and stable refrigeration cycles, then refrigerant amount can be estimated, but special operations are required and the method cannot be applied in actual usage environments with varying loads and temperatures
Solution Approach 1:
The invention transitions from static estimation methods (requiring constant loads and stable cycles) to dynamic estimation that adapts to varying air conditioning loads and outdoor temperatures. The system continuously monitors operating conditions and adjusts estimation parameters in real-time, enabling accurate refrigerant measurement during actual usage without special operations
Solution Approach 2:
The invention changes the estimation approach by incorporating multiple variable parameters including outdoor temperature, air conditioning load variations, and compressor frequency changes. Instead of relying on fixed constant conditions, the system uses parameter variations inherent in normal operation to achieve accurate refrigerant amount estimation
2Measurement precision
If conventional methods requiring constant air conditioning loads and stable refrigeration cycles are applied, then refrigerant estimation is possible, but development costs increase and the method lacks adaptability to real-world conditions
Solution Approach 1:
The system employs dynamic adaptation to varying environmental conditions including outdoor temperature changes and fluctuating air conditioning loads. By continuously monitoring these variables and adjusting the estimation algorithm accordingly, the method achieves both accuracy and environmental adaptability without requiring constant stable conditions
Solution Approach 2:
The invention creates a universal estimation method that functions across diverse operating conditions and environments. The system can estimate refrigerant amount in various scenarios including different outdoor temperatures, varying indoor loads, and different compressor operating frequencies, eliminating the need for condition-specific procedures
Data Source
AI summary
An equipment management system includes: an equipment having a refrigerant; an acquisition unit configured to acquire measurement information indicating a result of measuring a temperature of the refrigerant in the equipment, electrical characteristics of the equipment, and environmental information around the equipment; and an estimation unit configured to estimate an amount of the refrigerant in the equipment based on the measurement information acquired by the acquisition unit, equipment information on the equipment and equipment installation information on an installation environment of the equipment, the equipment information and the equipment installation information being preset.