关于垂直外管间接蒸发式冷却器与内槽管的性能的实验研究
Wen-He Zhou1,2, Ang Li3,4
1School of Environmental & Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, Gansu, China. zwh6888@mail.lzjtu.cn.
Scientific reports
|September 9, 2024
概括
内部槽管可以提高垂直管间接蒸发式冷却器 (VTIEC) 的性能. 优化空气流量和进气条件显著提高了冷却能力和效率,改善了建筑空调.
科学领域:
- 机械工程 机械工程
- 热力学是一种热力学.
- 建筑服务工程 工程
背景情况:
- 垂直管间接蒸发式冷却器 (VTIEC) 提供了节能建筑空调的潜力.
- 改善水膜质量对于提高VTIEC性能至关重要.
- 现有的VTIEC设计在实现最佳热效率方面存在局限性.
研究的目的:
- 引入一个新的VTIEC设计,其中包括内部槽管.
- 实验性地研究内槽管对水膜质量和VTIEC整体性能的影响.
- 确定最佳的操作参数,以最大限度地提高VTIEC的效率.
主要方法:
- 一个新的VTIEC单元的设计和制造,该单元具有内部槽管.
- 在各种工作空气和生产空气条件下进行实验性性能评估.
- 分析水膜特性和热性能指标.
主要成果:
- 内部槽管可以明显改善水膜质量和VTIEC性能.
- 较低的进气工作空气度显著增加了蒸发式冷却能力和VTIEC效率.
- 确定了1.52 (产生的空气与工作空气) 的最佳速度比.
- 生产的空气速度对高达4.05m/s的冷却能力产生积极影响,同时对性能系数 (COP) 产生负面影响.
- 实现的最大单元冷却能力,湿球效率和COP分别为307.74W/m2,81.7%和44.97.
结论:
- 具有内部槽管的新型VTIEC在蒸发式冷却技术中取得了重大进展.
- 优化操作参数,如进气和速度比,是最大限度地提高VTIEC效率的关键.
- 这些发现支持更广泛地采用增强的VTIEC系统,以实现可持续的建筑气候控制.
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