Air conditioner control method including determination of a chiller target load
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Solution Overview
Problem
Air conditioning systems face inefficiencies due to varying loads and temperatures, leading to suboptimal operation, particularly in buildings where energy consumption is high and demand fluctuates with season, climate, and occupancy.
Innovation Solution
An air conditioner control method and device that acquires current chilled water temperature, determines target loads and temperatures, and adjusts compressor operation parameters, including evaporation and condensation pressures, to optimize performance by matching refrigeration capacity with changing conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the air conditioning system operates with fixed parameters, then the system structure is simple, but the energy consumption increases due to inability to adapt to varying loads and temperatures
Solution Approach 1:
The patent implements dynamic adjustment of compressor operation parameters including evaporation pressure, condensation pressure, and refrigerant flow based on real-time detection of chilled water temperature, cooling water temperature, and load conditions. This transforms the fixed-parameter system into a dynamic one that adapts to varying operational conditions, resolving the contradiction between energy efficiency and system complexity.
Solution Approach 2:
The control system continuously detects operational parameters (chilled water temperature, cooling water temperature, load conditions) and uses this feedback to adjust compressor parameters. This closed-loop feedback mechanism enables the system to automatically optimize energy consumption based on actual conditions while maintaining manageable control complexity through systematic parameter adjustment.
2Productivity
If the air conditioning system uses dynamic parameter adjustment, then the energy efficiency improves, but the control complexity increases
Solution Approach 1:
The patent systematically adjusts multiple operational parameters including evaporation pressure, condensation pressure, refrigerant flow rate, and compressor speed based on detected temperature and load conditions. This coordinated parameter change strategy enables comprehensive efficiency improvement while managing control complexity through structured parameter interrelationships.
Solution Approach 2:
The system implements dynamic adaptation to varying loads and temperatures by continuously adjusting operational parameters. This dynamic approach maximizes system efficiency across different operating conditions while the structured control methodology keeps the complexity manageable through systematic parameter adjustment rather than complex control algorithms.
3Reliability
If the compressor operates at high capacity, then the cooling demand is met, but the energy consumption increases when load is low
Solution Approach 1:
The patent implements dynamic capacity adjustment of the compressor based on real-time detection of cooling load conditions and temperature parameters. The compressor operates at high capacity when cooling demand is high and reduces capacity when load is low, ensuring reliable cooling demand satisfaction while optimizing energy consumption through continuous adaptation to actual operational requirements.
Solution Approach 2:
The control system uses feedback from temperature sensors and load detection to continuously adjust compressor capacity. This ensures that the compressor maintains sufficient capacity to meet cooling demands while avoiding excessive energy consumption during low-load periods through automatic capacity modulation based on actual system needs.
Data Source
AI summary
The invention provides an air conditioner control method and device and an air conditioner. The air conditioner control device acquires a current temperature of a chilled water of a unit at a preset period; determine a target load of the unit, a target temperature of a chilled water and a target temperature of a cooling water based on a temperature of the chilled water set by a user and the current temperature of the chilled water; determine an evaporating parameter and a condensing parameter of the unit based on the target load of the unit, the target temperature of the chilled water and the target temperature of the cooling water; and determine operation parameters of a compressor based on the target load of the unit, the evaporation parameter and the condensation parameter. Therefore, the unit can operate based on the operation parameters.