| 摘要: |
| 为了营造健康舒适的室内环境,本研究通过优化机械通风能源品位,构建不同层级射流间温度梯度以转变浮力通量作用方向,提出了新型通风模式一叠动通风。分别从温度分布、能量利用效率以及室内热舒适性三个方面进行了探索与分析。研究结果表明:由于叠动通风自身气流组织特性的优越性，使人员区对冷量的利用率更高,可实现在输人冷负荷降低25%的前提下,室内平均温度相对层式通风仅升高0.27℃；叠动通风的通风效率为1. 004,高于层式通风,同时室内热舒适也有明显改善,叠动通风的空气分布性能指数( ADPI)为0. 852 4,而层式通风的ADPI为0. 841 7,叠动通风相对于层式通风的平均热感觉指数(PMV)分布更加均匀且更接近于热中性环境。叠动通风通过采用不同品位能源制取不同温度射流,由此实现机械通风在能源应用方面的“质”与“量”双层次提升,并为促进营造非均匀室内环境提供新思路。 |
| 关键词: 关键词叠动通风 能源利用效率 室内热舒适 气流分布性能指数 |
| DOI： |
| 投稿时间：2020-09-18 修订日期：2021-03-10
|
| 基金项目:国家自然科学基金(52008147)资助项目。 |
|
| Study on the Performance of Interactive Cascade Ventilation Oriented to the Non-uniform Indoor Environment Requirement |
| Li Han,Li Jinchao,li Nana,Kong Xiangfei |
| (School of Energy and Environmental Engineering，Hebei University of Technology) |
| Abstract: |
| A new ventilation method called interactive cascade ventilation was proposed in this study to facilitate a healthy and comfortable indoor environment with low energy consumption. Interactive cascade ventilation can take full advantage of thermal buoyancy by optimizing the energy grade of mechanical ventilation and determining the temperature gradient between jets to transform the action direction of thermal buoyancy. This study investigated the performance of interactive cascade ventilation based on temperature distribution, energy utilization efficiency, and indoor thermal comfort. The research results showed that the average indoor temperature under interactive cascade ventilation increased by only 2.5℃ with a 25% reduction in cooling energy input compared with stratum ventilation. The ventilation effectiveness under interactive cascade ventilation was 1.004, which was higher than that under stratum ventilation. Moreover, thermal comfort significantly improved. The ADPI under interactive cascade ventilation was 0.852 4, while that under stratum ventilation was 0.841 7. In addition, the PMV under interactive cascade ventilation was better distributed and closer to a thermally neutral environment. Hence, interactive cascade ventilation can realize the improvement of energy application of mechanical ventilation in both quality and quantity by using different grade energies to create jets of different temperatures. It can provide new solutions to promote the creation of a non-uniform indoor environment and present important energy-saving, environmental protection, and social benefits. |
| Key words: interactive cascade ventilation energy use efficiency indoor comfort air distribution performance index |
