Study on Transient Total Heat B-G Model of Air Supply in Large Space during Summer

Huang Chen; Zhu Jiyang; Yang Tong; Wang Fei; Zou Zhijun; Fan Qianhong; Miao Yufeng

doi:10.3969/j.issn.0253-4339.2022.03.101

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Study on Transient Total Heat B-G Model of Air Supply in Large Space during Summer

更新时间：2024-07-18

- Study on Transient Total Heat B-G Model of Air Supply in Large Space during Summer
- Journal of Refrigeration Vol. 43, Issue 3, (2022)
- 作者机构：
  
  1. 上海理工大学环境与建筑学院
  2. 同济大学建筑设计研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0253-4339.2022.03.101
  CLC：
- Published：2022
- 稿件说明：
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Huang Chen, Zhu Jiyang, Yang Tong, et al. Study on Transient Total Heat B-G Model of Air Supply in Large Space during Summer[J]. Journal of refrigeration, 2022, 43(3).
DOI：

Huang Chen, Zhu Jiyang, Yang Tong, et al. Study on Transient Total Heat B-G Model of Air Supply in Large Space during Summer[J]. Journal of refrigeration, 2022, 43(3). DOI： 10.3969/j.issn.0253-4339.2022.03.101.

摘要

本文针对一实际运行的下送风分层空调大空间建筑，引入谐波法求解具有蓄热特性的围护结构内壁面温度，利用不稳定实验结果考虑室内空气蓄热，并结合室内散湿特点，建立了夏季非稳态全热6区Block-Gebhart (B-G)模型。通过现场热环境在8个工况下进行对比实验研究，结果表明：离地以上的1~4区，空气温度和壁面温度的理论预测值与实验值平均绝对误差分别为0.44 ~1.12 ℃和0.63~1.96 ℃，室内空气焓值为1.85~1.96 kJ/kg ；接近屋顶的5区、6区空气温度、壁面温度、空气焓值误差较大，并低于实验结果；说明采用谐波法以及实验结果解析大空间热环境不稳态解是可行的。

Abstract

In this study

the harmonic method was introduced to solve the inner wall temperature problems of an envelope structure with heat storage characteristics in a large-space building with stratified air conditioning. The transient experimental results were used to calculate the heat storage of the indoor air. Combined with the diffusion characteristics of the indoor moisture

the transient full-heat six-zone Block-Gebhart (B-G) model was established under summer operating conditions. The results showed that the average absolute errors were between 0.44-1.12 ℃ and 0.63-1.96 ℃

in terms of the differences between the predicted and experimental values of the air and wall temperatures in the four regions above ground level

respectively

while the indoor air enthalpy was 1.85-1.96 kJ/kg. However

the errors in air and wall temperature

as well as the air enthalpy in the fifth and sixth zones close to the roof were higher and the predictions lower than the experimental results. The results showed that it was feasible to use the harmonic method and experimental results to analyze the transient solution of the thermal environment in large-space buildings.

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