关于冰空气喷射技术的水滴冷过程的实验研究
Hu Jingru1, Li Jingbin2, Huang Zhongwei1
1State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing, 102249, China.
Scientific reports
|February 8, 2024
概括
冰空气喷射技术利用冷环境中的原子化水滴来制造冰颗粒. 结时间受到滴滴体积和环境温度的显著影响,液提供比冷气体更快的固化速度.
科学领域:
- 材料科学与工程 材料科学与工程
- 低温生态学和热力学
背景情况:
- 冰空气喷射技术是一种非破坏性,无残留,环保的加工工艺.
- 它通过在超低温环境中原子化水滴来形成冰颗粒.
研究的目的:
- 以视觉分析冷却气体和液中的水滴的结特性.
- 研究滴滴体积和环境温度对冷过程的影响.
主要方法:
- 在冷却气体和液中结的水滴的视觉分析.
- 研究滴滴体积和环境温度对结动态的影响.
主要成果:
- 在冷却气体中观察到四个结阶段 (冷却前,回收,固化,深冷);在液中没有回收阶段.
- 一个5μl滴滴在气体中在-20·36°C下在68秒内结冰,而在液中则是1.7秒.
- 结时间随着滴量增加而增加;环境温度显著影响结时间 (例如,随着温度下降而减少45.5%).
结论:
- 水滴冷动态在冷气体和液环境之间有很大的差异.
- 滴滴体积和环境温度是影响冰颗粒形成时间的关键参数.
- 这些发现有助于推进冰空气喷气技术的发展.
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