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首页> 外文期刊>Journal of Energy Storage >A new strontium bromide MOF composite with improved performance for solar energy storage application
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A new strontium bromide MOF composite with improved performance for solar energy storage application

机译:一种新型的溴化锶MOF复合材料,具有改进的性能,可用于太阳能存储应用

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摘要

Seasonal heat storage technologies are the key for a widespread use of solar thermal energy in residential applications. This can be achieved using hygroscopic salts encapsulated in a porous matrix with a high pore volume. Using strontium bromide encapsulated in the mesoporous MIL-101(Cr) Metal-Organic Framework, a heat storage density of 233 kW h/m(3) could be achieved, by using water vapor at a partial pressure as low as 1.25 kPa. This excellent result is partly due to the high salt content (63 wt. %), but also to unexpected modifications of the water sorption isotherms of SrBr2 once it is encapsulated. At a temperature of 30 degrees C, ideal for space heating in low energy dwellings, it may be suggested that the salt is partially soluble upon water sorption.
机译:季节性储热技术是在住宅应用中广泛使用太阳能的关键。这可以使用包封在具有高孔体积的多孔基质中的吸湿盐来实现。使用封装在介孔MIL-101(Cr)金属有机框架中的溴化锶,通过使用分压低至1.25 kPa的水蒸气,可以实现233 kW h / m(3)的储热密度。这种优异的结果部分是由于高盐含量(63 wt。%),而且还因为SrBr2封装后吸水等温线的出乎意料的改变。在30摄氏度的温度下(最适合在低能耗住宅中进行空间加热),盐可能会因吸水而部分溶解。

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