| 摘要: |
| 工业建筑内存在多个高温热源，所形成的热羽流对建筑气流组织的影响极大。本文以一座新能源电池材料生产车间为例，通过6种不同的送风速度和6种不同的送风口高度来研究多热源热羽流与送风射流的相互作用规律，及其相互作用对工业建筑热环境的影响。结果表明：多热源耦合热羽流以高温热源为主导，羽流相互靠拢形成集中的卷吸区域，最大轴心速度约为0.64 m/s。利用热羽流引导气流组织向上运动，可使高温空气快速排出，从而有效改善建筑工作区热环境。降低送风速度能够减少对热羽流上流的抑制作用，当送风速度由14.80 m/s降至2.96 m/s，车间工作区温度由39.2 ℃降至31.6 ℃。降低送风口高度能够增加对热羽流上流的促进作用，当送风口高度由5.0 m降至1.7 m，车间工作区温度由34.9 ℃降至30.3 ℃。研究结果可为工业建筑的通风设计提供参考。 |
| 关键词: 工业建筑 热羽流 送风射流 相互作用 热环境 |
| DOI： |
| Received:August 15, 2022Revised:October 12, 2022 |
| 基金项目:国家自然科学基金(51578221)，湖南省自然科学基金项目(2020JJ4608)和湖南省
教育厅资助科研( 19A019) 资助项目。 |
|
| Influence of Multi-source Heat Plume and Ventilation Interaction on Thermal Environment of Industrial Buildings |
|
Huang Yu, Yang Changzhi
|
| (College of Civil Engineering, Hunan University) |
| Abstract: |
| There are many high-temperature heat sources in industrial buildings, and the formed thermal plume has a significant impact on air distribution. In this study, using a new energy battery material production workshop as an example, six air supply speeds and six air supply port heights were used to study the interaction of a multi-heat source heat plume and supply air jet, as well as the effect of the interaction on the thermal environment of an industrial building. The results show that the multi-heat source coupled heat plume is dominated by the high-temperature heat source, the plumes close to each other form a concentrated entrainment space, and the maximum axial velocity is approximately 0.64 m/s. Using a thermal plume to guide the upward movement of air distribution, high-temperature air can be quickly exhausted to effectively improve the thermal environment of the building work area. Reducing the air supply speed can reduce the inhibitory effect on the upstream heat plume. When the air supply speed decreases from 14.80 m/s to 2.96 m/s, the workshop working area temperature decreases from 39.2 °C to 31.6 °C. Reducing the height of the air supply outlet can increase the promotional effect on the upstream heat plume. When the height of the air supply outlet decreases from 5.0 m to 1.7 m, the temperature of the workshop working area decreases from 34.9 °C to 30.3 °C. These results can be helpful for the ventilation design of industrial buildings. |
| Key words: industrial building thermal plume supply air jet interaction thermal environment |
