Building Evaluation Apparatus for Net Zero Energy Targets
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Solution Overview
Problem
Existing device control techniques cannot evaluate whether the target values for energy and comfortability are achieved at the entire building level, despite being able to assess each area individually, which is a limitation in achieving net Zero Energy Building (ZEB) goals.
Innovation Solution
An evaluation apparatus that includes predictive value acquisition units for both individual areas and the entire space, along with evaluation units applying specific criteria to assess performance, enabling comprehensive evaluation of device performance across multiple areas and the entire building.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If device control is optimized for each individual area, then area-specific target values are achieved, but overall building target values cannot be evaluated
Solution Approach 1:
The evaluation system is segmented into two independent evaluation paths: area-specific evaluation units that assess individual area performance, and an overall evaluation unit that assesses building-wide performance. This segmentation allows each evaluation unit to focus on its specific scope without losing the bigger picture, resolving the contradiction between detailed area evaluation and overall building evaluation.
Solution Approach 2:
The overall evaluation unit acts as an intermediary that aggregates data from multiple area evaluation units and provides a comprehensive building-level assessment. This intermediary component ensures that area-specific evaluations are integrated into the overall building performance picture, preventing loss of information about overall building target achievement.
2Measurement precision
If evaluation criteria are customized for each area, then area-specific performance is accurately assessed, but multiple evaluation systems increase complexity
Solution Approach 1:
The evaluation system uses a universal evaluation framework that can accommodate both area-specific and building-wide evaluation criteria. The same evaluation unit structure is reused across different areas and the overall building, with the flexibility to apply different criteria sets. This multi-functionality reduces system complexity while maintaining evaluation accuracy for different scopes.
3Reliability
If device control targets entire building performance, then overall building targets are addressed, but individual area requirements may be compromised
Solution Approach 1:
The control system is segmented into area-specific control units and an overall building control unit. Each area control unit can independently adjust device operations to meet local requirements, while the overall control unit ensures building-wide targets are met. This segmentation enables the system to adapt to both local and global requirements simultaneously.
Solution Approach 2:
The system implements feedback loops at both area and building levels. Area evaluation results feed into area control adjustments, and overall building evaluation results feed into building-wide control adjustments. This multi-level feedback mechanism ensures that both area-specific and overall building targets are continuously monitored and achieved through adaptive control.
Data Source
AI summary
An area evaluation unit (51) acquires for each area of a plurality of areas, a predictive value of each area which is predicted to be measured when a device operates in a space that includes the plurality of areas. A building evaluation unit (52) acquires an overall predictive value which is a predictive value of the entire space calculated using a plurality of predictive values of the plurality of areas. Further, the area evaluation unit (51) evaluates the predictive value of each area, using a partial evaluation criterion which is an evaluation criterion applied to each area. Further, the building evaluation unit (52) evaluates the overall predictive value, using an overall evaluation criterion which is an evaluation criterion applied to the entire space.