Whole building air-conditioning system
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Solution Overview
Problem
Existing whole building air-conditioning systems are inefficient in reducing power consumption during summer and winter in Japan, where air conditioning accounts for a significant portion of the total power usage.
Innovation Solution
A whole building air-conditioning system that includes a device for conditioning air in an air-conditioning room and conveying it to multiple target spaces, along with a controller that executes power-saving processing by adjusting the target temperatures and air conveyance based on power reduction requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the air-conditioning system operates at standard capacity to maintain comfort, then the comfort level is maintained, but the power consumption remains high
Solution Approach 1:
The system dynamically adjusts the air-conditioning operation based on real-time power availability. The controller monitors power reduction requests and adaptively changes the air conveyance strategy, switching between full-capacity operation and reduced-capacity operation to balance power consumption with comfort requirements
Solution Approach 2:
The system changes operational parameters (air conveyance volume, target temperature) based on power availability conditions. When power reduction is requested, the controller modifies these parameters to reduce energy consumption while attempting to maintain acceptable comfort levels
2Loss of energy
If the air-conditioning system reduces power consumption by lowering capacity, then power consumption is reduced, but the cooling/heating effectiveness decreases
Solution Approach 1:
The system segments the air-conditioning service by priority. When power reduction is requested, the controller selectively maintains air conveyance to critical spaces while reducing or suspending service to non-critical spaces, thereby preserving essential cooling/heating effectiveness while reducing overall power consumption
3Loss of energy
If the air-conditioning system serves all target spaces simultaneously, then comprehensive coverage is achieved, but power consumption increases
Solution Approach 1:
The system dynamically reconfigures spatial coverage based on power availability. The controller can switch between serving all target spaces, serving only priority spaces, or suspending service entirely, allowing the system to adapt its coverage area to match available power resources
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
The system effectively reduces power consumption while maintaining comfort by adjusting target temperatures and air conveyance, especially during power failures or when power-saving requests are issued.
Implementation Method 1
a whole building air-conditioning device that conditions air in an air-conditioning room and conveys the air conditioned in the air-conditioning room to a plurality of air-conditioning target spaces
Data Source
AI summary
A whole building air-conditioning system includes a whole building air-conditioning device that conditions air in an air-conditioning room and conveys the air conditioned in the air-conditioning room to a plurality of air-conditioning target spaces, and a controller that executes power saving processing on the whole building air-conditioning device that sets a target temperature of each of the plurality of air-conditioning target spaces to a temperature at which a power load is smaller based on a reduction request for reducing use of power.