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In recent years, serious pollution weakened the solar radiation received near the ground, which leads to a remarkable error between the calculated value of ASHRAE model and the measured data. Therefore, based on the day of year (D) of the existing model, this paper identifies air temperature (T), modified humidity ratio (d), air quality index (AQI) and relative humidity ( \(\varphi\) ) as correction parameters to obtain the modified ASHRAE model. Then ASHRAE model and its modified model are compared and analyzed based on the measured data. The results show that the accuracy of modified ASHRAE model is significantly improved compared with the ASHRAE model, and the calculated value is modified by ASHRAE model and in good agreement with the measured data. The Nash–Sutcliffe equation (NSE) is improved by 27.7%, and the root mean square error (RMSE) is reduced by 55.9%.

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Validation of Measured Data of Modified ASHRAE Model

  • 章节

  • 发表日期：

    2026年

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  • Wanxiang Yao,
  • Weijun Gao,
  • Chunze Liu,
  • Xiangru Kong,
  • Zihao Fu

摘要

In recent years, serious pollution weakened the solar radiation received near the ground, which leads to a remarkable error between the calculated value of ASHRAE model and the measured data. Therefore, based on the day of year (D) of the existing model, this paper identifies air temperature (T), modified humidity ratio (d), air quality index (AQI) and relative humidity ( \(\varphi\) ) as correction parameters to obtain the modified ASHRAE model. Then ASHRAE model and its modified model are compared and analyzed based on the measured data. The results show that the accuracy of modified ASHRAE model is significantly improved compared with the ASHRAE model, and the calculated value is modified by ASHRAE model and in good agreement with the measured data. The Nash–Sutcliffe equation (NSE) is improved by 27.7%, and the root mean square error (RMSE) is reduced by 55.9%.