在夏季极端温度下高适应性制冷,由金属有机框架实现
Shao-Fei Wu1,2, Li-Wei Wang1,2, Bing-Zhi Yuan1,2
1Institute of Refrigeration and Cryogenics, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
Fundamental research
|August 8, 2025
概括
可持续的制冷对于极端高温至关重要. 本研究介绍了一种太阳能驱动的吸附冷却系统,使用金属有机框架-氨对,即使在高环境温度下也能实现高效的冷却.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 可持续能源 可持续能源
背景情况:
- 全球气温和能源需求的增加需要可持续的制冷解决方案.
- 在高环境温度 (≥40°C) 的低级热能驱动制冷仍然是一个尚未探索的领域.
- 金属有机框架 (MOF) 为先进的吸附应用提供可调节的性能.
研究的目的:
- 开发和评估一个高环境温度的高效太阳能吸附制冷系统.
- 为了研究金属有机框架-氨 (MOF-NH3) 工作对在极端夏季条件下的性能.
- 为了展示可持续冷却应用的概念验证设备.
主要方法:
- 使用MIL-101 ((Cr) 作为氨吸附的金属有机框架.
- 在高冷凝 (40°C) 和高吸附 (45°C) 温度下研究氨的吸附能力.
- 构建并测试了一种概念验证的吸附制冷设备,使用MIL-101 (((Cr) -氨对.
- 在高凝结 (40°C),低蒸发 (10°C) 和脱落 (100°C) 温度下测量性能系数 (COP).
主要成果:
- 由于宿主-客人相互作用,MIL-101 ((Cr) 显示出0.59g·g-1的稳定氨吸附能力.
- MOF-NH3工作对即使在高工作温度下也保持了性能.
- 在具有挑战性的条件下,概念验证设备实现了0.387的性能系数 (COP).
- 该系统证明能够适应高环境温度,这对于夏季的冷却至关重要.
结论:
- 在高环境温度下,MIL-101 ((Cr) -氨工作对对于太阳能驱动的吸附制冷非常有效.
- 这种创新方法为冷却和热能需求提供了一个有前途的可持续能源技术.
- 这些发现支持在以氨为基础的燃料系统和其他能源解决方案中的潜在应用.
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