Air conditioning system
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Solution Overview
Problem
Existing air-conditioning systems face inefficiencies in power consumption due to variations in load factors among indoor units, particularly when adjusting airflow rates to meet varying temperature and humidity demands in different target spaces.
Innovation Solution
An air-conditioning system that includes an outside air processing device and air-conditioning device, controlled by a central controller, adjusts airflow rates based on the operating states of indoor units to optimize power consumption by preferentially increasing airflow to units with higher load factors or temperature requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the flow rate of air blown into each target space is adjusted according to the operating state of indoor units, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The system dynamically adjusts the flow rate of air blown into each target space based on the operating state of indoor units. The controller continuously monitors load factors and modifies airflow in real-time to match actual cooling or heating demands, thereby reducing power consumption while adapting to changing conditions.
Solution Approach 2:
The controller receives feedback from indoor units regarding their operating states and load factors. Based on this feedback, the controller adjusts the airflow rates from the air handling unit to each target space, creating a closed-loop control system that optimizes power consumption while maintaining comfort.
2Temperature
If airflow rates are increased to meet cooling or heating demands in multiple target spaces, then temperature control accuracy is improved, but power consumption increases
Solution Approach 1:
The system applies different airflow rates to different target spaces based on their individual requirements. Each target space receives the specific amount of conditioned air needed to maintain the desired temperature, rather than uniformly distributing air throughout all spaces. This local optimization reduces overall power consumption while maintaining temperature control accuracy where needed.
Solution Approach 2:
The controller changes the airflow rate parameter dynamically based on the operating state of indoor units and the thermal load of each target space. By adjusting this key parameter in response to changing conditions, the system maintains temperature control accuracy while minimizing energy consumption.
Data Source
AI summary
An air-conditioning system includes an outside air processing device, an air-conditioning device, and a control unit. The outside air processing device adjusts the temperature of outside air taken thereinto, and supplies the outside air to a plurality of indoor spaces. The air-conditioning device includes a plurality of indoor units at least one of which is installed in each of a plurality of target spaces that are some or all of the indoor spaces. The air-conditioning device adjusts the temperatures of air in the target spaces. The control unit adjusts the flow rate of air blown into each target space by the outside air processing device in accordance with an operating state of the at least one of the indoor units to reduce power consumption of the air-conditioning system.