Feature Condition Mining and Prior Probability Guidance Based Model Calibration Methodology for HVAC System

He Jianing; Lu Jie; Zhao Yang

doi:10.12465/j.issn.0253-4339.2025.05.115

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Feature Condition Mining and Prior Probability Guidance Based Model Calibration Methodology for HVAC System

更新时间：2025-09-29

- Feature Condition Mining and Prior Probability Guidance Based Model Calibration Methodology for HVAC System
- Journal of Refrigeration Vol. 46, Issue 5, Pages: 115-123(2025)
- 作者机构：
  
  浙江大学制冷与低温研究所　杭州　310027
- 作者简介：
  
  Zhao Yang, male, tenured associate professor, College of Energy Engineering, Zhejiang University, 86-18814803300, E-mail: youngzhao@zju.edu.cn. Research fields: artificial intelligence-based building energy systems, fault detection and diagnosis.
- 基金信息：
  
  National Natural Science Foundation of China(52161135202)
- DOI：10.12465/j.issn.0253-4339.2025.05.115
  CLC： TU831.4;TP183
- Received：23 April 2024，
  
  Revised：2024-07-13，
  
  Accepted：30 August 2024，
  
  Published：16 October 2025
- 稿件说明：
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He Jianing, Lu Jie, Zhao Yang. Feature Condition Mining and Prior Probability Guidance Based Model Calibration Methodology for HVAC System[J]. Journal of refrigeration, 2025, 46(5): 115-123.
DOI：

He Jianing, Lu Jie, Zhao Yang. Feature Condition Mining and Prior Probability Guidance Based Model Calibration Methodology for HVAC System[J]. Journal of refrigeration, 2025, 46(5): 115-123. DOI： 10.12465/j.issn.0253-4339.2025.05.115.

摘要

暖通空调系统实测数据的高度冗余显著降低了其模型参数辨识的计算效率。为了解决上述问题，提出一种基于特征工况挖掘和先验概率引导的参数辨识方法。特征工况挖掘方法对运行数据进行相关性分析，选择暖通空调系统运行工况的关键变量，并根据关键变量维度进行网格采样，得到更具代表性的特征工况，从而提升模型单次计算效率。模型参数辨识过程中，建立待辨识参数的先验概率模型，基于先验概率进行待辨识参数的先验区间估计和改进目标函数，引导模型更快收敛。该方法在武汉某工厂暖通空调系统

供冷季一个月的运行数据集上进行了验证，结果表明：该方法中的MAPE（平均绝对百分比误差）和CV-RMSE（均方根误差变异系数）相比基于K-means聚类的方法分别降低了16.0%和12.0%，比基于原始数据的方法分别降低了20.9%和15.2%，NMBE（归一化平均偏差误差）更接近0，

（决定系数）相比2种方法分别提升了4.7%和8.5%，计算效率提高约39.3%。该方法为实现高效准确的暖通空调系统建模提供了技术指导和数据支撑。

Abstract

The high redundancy of the measured data from heating

ventilation

and air conditioning (HVAC) systems significantly reduces the computational efficiency of model calibration. To address this challenge

a model calibration method based on mining feature operating conditions and a priori probability guidance was introduced in this study. Correlation analysis was conducted on the operational data for mining feature operating conditions. Feature variables related to HVAC system operation were selected

and a grid sampling technique based on these characteristic variables was employed to obtain representative operating conditions

enhancing the efficiency of the model calculations. Additionally

a prior probability model was established for the parameters to be calibrated during the model calibration process. A priori interval estimation was then performed

and the objective function was improved based on the prior probability to guide the model towards faster convergence. The proposed method was validated using a one-month operational dataset from a cooling plant in an industrial building located in Wuhan

China. The results indicated that the proposed method achieved significant improvements in performance metrics. Specifically

mean absolute percentage error (MAPE) and cross-validated root mean square error (CV-RMSE) were reduced by 16.0% and 12.0%

respectively

compared to the K-means clustering-based method

and by 20.9% and 15.2%

respectively

compared to the baseline data-based method. Furthermore

the normalized mean bias error (NMBE) was closer to zero

and the coefficient of determination (

) increased by 4.7% and 8.5%

respectively

compared to the two aforemen

tioned methods. Additionally

our method enhanced the computational efficiency by approximately 39.3%. This method provides technical guidance and data support for achieving an efficient and accurate modeling of HVAC systems.

关键词

Keywords

references

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Institute of Refrigeration and Cryogenics ，Zhejiang University

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