Air-Conditioning Control With Real-Time Plan Correction
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Solution Overview
Problem
The existing air-conditioning control systems fail to adjust the operation plan in real-time when the predicted heat load deviates from the actual load during execution, leading to inefficient energy management and comfort maintenance.
Innovation Solution
An air-conditioning control system that includes a heat load prediction unit, an operation plan creation unit, and an operation plan correction unit, which continuously monitor and adjust the operation plan based on actual temperature measurements to minimize power consumption and maintain a comfortable temperature range, with a temperature prediction block to forecast temperature changes and correct the plan as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If an operation plan is created based on predicted heat load to reduce power consumption, then energy saving is improved, but the operation plan cannot be corrected when predicted heat load deviates from actual heat load
Solution Approach 1:
The system compares the measured room temperature with the predicted room temperature, and uses this temperature deviation feedback to correct the operation plan. The correction amount is calculated based on the temperature difference, enabling the system to adapt to actual heat load conditions while maintaining energy saving objectives.
Solution Approach 2:
The operation plan is transformed from a static plan to a dynamic one that can be corrected in real-time. The system allows for operation plan correction during execution based on temperature deviations, making the energy management system adaptable to changing actual conditions while pursuing energy saving goals.
2Measurement precision
If the operation plan is corrected frequently to maintain temperature accuracy, then temperature control precision is improved, but system complexity increases
Solution Approach 1:
The system applies partial correction by only adjusting the operation plan when temperature deviation exceeds a predetermined threshold. This avoids excessive correction operations and maintains simple control logic while still achieving adequate temperature control precision when needed.
3Temperature
If the operation plan is corrected without constraints to follow actual temperature, then temperature maintenance is improved, but power consumption increases
Solution Approach 1:
The system changes the correction amount parameter dynamically based on the temperature deviation magnitude. When deviation is small, no correction is applied; when deviation exceeds the threshold, correction is applied proportionally. This parameter-based control maintains temperature within acceptable ranges while minimizing unnecessary power consumption from frequent corrections.
Data Source
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AI summary
There are provided a heat load prediction unit (32) that predicts a change over time of a heat amount to be processed by air-conditioning equipment (12), an operation plan creation unit (33) that previously creates an operation plan of the air-conditioning equipment (12) to reduce an evaluation index under a first restrictive condition that a total process heat load be maintained at the same level or within the range of a predetermined amount of difference and that the temperature in a room be maintained within a predetermined comfortable temperature range, and an operation plan correction unit (34) that corrects the operation plan during execution of control of the air-conditioning equipment (12) in accordance with the operation plan. If an actually measured temperature measured by a temperature sensor is different from a predicted temperature predicted by the operation plan creation unit (33) at the time of creation of the operation plan, the operation plan correction unit (34) predicts a change over time of the temperature in the room, and corrects the operation plan to minimize the evaluation index under the first restrictive condition, with a second restrictive condition set as that an error between a predicted temperature predicted by the operation plan correction unit (34) and the predicted temperature predicted by the operation plan creation unit (33) be maintained within a predetermined allowable fluctuation range at one time or a plurality of times in the correction application period.