Producing cold from heat with aluminum carboxylate-based metal-organic frameworks
Producing cold from heat with aluminum carboxylate-based metal-organic frameworks
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DOI：
10.1016/j.xcrp.2021.100730
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发表时间：
2022-02-16
影响因子：
8.9
通讯作者：
Serre, Christian
中科院分区：
文献类型：
--
作者：
Gkaniatsou, Effrosyni;Chen, Chaoben;Serre, Christian
到2050年，全球冷却能源需求将增加四倍。热驱动冷却技术是电热泵在去除有害制冷剂和利用可再生能源和废热方面的替代解决方案。我们强调了水稳定性微孔羧酸铝基金属有机骨架（Al-MOFs）作为吸附剂在热产冷应用中的优势。在这里，我们用绿色和可扩展的工艺合成al - mof，这是探索各种工业和民用应用的先决条件。一个概念验证全尺寸吸附制冷机与不同的Al-MOFs建立了优化配置，从各种表征技术衍生。测试的Al-MOFs在典型冷却场景下的热效率超过0.6，比冷却功率超过1 kW/kg。值得注意的是，当在室外验证中使用太阳热能作为热源时，al - mof是具有天气弹性的解决方案，在波动的操作条件（环境温度和太阳辐射）下表现出稳定的能量转换效率。
Worldwide cooling energy demands will increase by four times by 2050. Thermally driven cooling technology is an alternative solution to electric heat pumps in removing hazardous refrigerants and harnessing renewables and waste heat. We highlight the advantages of water-stable microporous aluminum-carboxylate-based metal-organic frameworks, or Al-MOFs, as sorbents in the application of producing cold from heat. Here, we synthesize the Al-MOFs with green and scalable processes, which are prerequisites for exploring various industrial and civil applications. A proof-of-concept full-scale adsorption chiller with different Al-MOFs is built up with optimized configurations derived from various characterization techniques. The tested Al-MOFs achieve thermal efficiency above 0.6 and specific cooling power over 1 kW/kg in typical cooling scenarios. Notably, when solar thermal energy is used as the heat source in an outdoor validation, Al-MOFs are weather-resilient solutions that exhibit a stable energy conversion efficiency under fluctuating operating conditions (ambient temperature and solar irradiation).