Refrigeration capacity determination method, refrigeration energy efficiency ratio determination method, and failure notification method
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Solution Overview
Problem
Existing methods struggle to accurately calculate the cooling capacity of each indoor unit in air-cooled multi-connection air conditioners, and fail to provide timely fault reminders for abnormal operating conditions.
Innovation Solution
A method involving the calculation of cooling capacity using indoor air density, air supply amount, intake and discharge air enthalpy values, and power measurements, applicable to both air-cooled and water-cooled systems, enabling accurate management and fault detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If temperature change of heat exchange water is measured to calculate cooling capacity, then cooling capacity can be calculated for water-cooled multi-connection air conditioners, but it is impossible to calculate the cooling capacity of each indoor unit in air-cooled multi-connection air conditioners
Solution Approach 1:
The patent changes the measurement parameters from water-based parameters (temperature change of heat exchange water) to air-based parameters (air density, air supply amount, intake air enthalpy value, discharge air enthalpy value). This parameter transformation enables the calculation method to be applicable to air-cooled systems while maintaining calculation accuracy through the formula: cooling capacity = air density × air supply amount × (intake air enthalpy value - discharge air enthalpy value).
Solution Approach 2:
The patent creates a universal cooling capacity calculation method that can be applied to both air-cooled and water-cooled multi-connection air conditioners. By using air flow rate and enthalpy difference as the basis for calculation, the method achieves multi-functionality across different system types, allowing separate calculation of each indoor unit's cooling capacity in air-cooled systems while maintaining compatibility with water-cooled systems.
2Ease of operation
If multiple indoor units are managed separately in multi-connection air conditioners, then user management convenience is improved, but the complexity of measuring and calculating cooling capacity for each unit increases
Solution Approach 1:
The patent enables each indoor unit to calculate its own cooling capacity independently using its own operating parameters (air density, air supply amount, intake air enthalpy value, discharge air enthalpy value). This self-service approach eliminates the need for complex centralized measurement systems, allowing each unit to autonomously determine its cooling capacity and contribute to the overall system management, thereby simplifying the measurement and calculation process while improving management convenience.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise calculation of cooling capacity and efficiency, allowing for timely fault reminders and effective management of air conditioners, ensuring efficient operation.
Implementation Method 1
obtaining an intake air enthalpy value of the indoor unit; obtaining a discharge air enthalpy value of the indoor unit; and determining the cooling capacity of the air conditioner according to the indoor air density, the air supply amount of the indoor unit, the intake air enthalpy value, and the discharge air enthalpy value
Data Source
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AI summary
The present invention relates to the technical field of air conditioners, and particularly relates to a refrigeration capacity determination method, a refrigeration energy efficiency ratio determination method, and a failure notification method. The present invention aims to solve the problem in which existing refrigeration capacity determination methods for air conditioners are unable to accurately calculate the refrigeration capacity of air-cooled air conditioners. The refrigeration capacity determination method of the present invention comprises: acquiring an indoor air density; acquiring an air output volume of an indoor unit; acquiring an air inlet enthalpy value of the indoor unit; acquiring an air outlet enthalpy value of the indoor unit; and determining a refrigeration capacity of an air conditioner according to the indoor air density, and the air output volume, the air inlet enthalpy value, and the air outlet enthalpy value of the indoor unit. The present invention estimates, by means of the indoor air density and the air output volume, an air mass that the indoor unit is capable of refrigerating per second, and uses the air inlet enthalpy value and the air outlet enthalpy value which are capable of indicating energy contained in the air. In this way, the present invention combines the indoor air density, the air output volume, the air inlet enthalpy value, and the air outlet enthalpy value to achieve accurate calculation of the refrigeration capacity.