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Adsorption cycle 'heat from cold' for upgrading the ambient heat: The testing a lab-scale prototype with the composite sorbent CaClBr/silica

机译:吸附循环“来自冷的热量”以提高环境热度:使用复合吸附剂CaClBr /二氧化硅测试实验室规模的原型

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Adsorptive transformation of heat is an emerging technology that is especially promising for low-temperature heat sources. Recently, an adsorption cycle (the so-called "Heat from Cold" or HeCol) has been suggested for upgrading the ambient heat in cold countries. This paper addresses the selection of composite sorbents of methanol specialized for this cycle and the study of their sorption properties. First, we analyzed which adsorbent is optimal for the HeCol cycle and how its properties depend on the HeCol cycle boundary temperatures. Then, three composite sorbents, based on CaCl2, CaBr2 and their mixture confined inside the silica gel mesopores, were prepared and their sorption equilibrium with methanol was analyzed keeping in mind the HeCol cycles with various boundary temperatures. It was shown, that these composite sorbents exchange up to 0.48 g of methanol per 1 g of the composite that far exceeds this value for common activated carbons. Finally, a first lab-scale HeCol prototype was built and tested with one of the studied sorbents, namely CaCIBr/SiO2, to evaluate the feasibility of the cycle.
机译:热量的吸附转化是一种新兴技术,特别适用于低温热源。最近,有人提出了一个吸附循环(所谓的“冷热”或HeCol)来提高寒冷国家的环境热量。本文介绍了专门用于该循环的甲醇复合吸附剂的选择及其吸附性能的研究。首先,我们分析了哪种吸附剂最适合HeCol循环,以及其性质如何取决于HeCol循环边界温度。然后,制备了三种基于CaCl2,CaBr2及其混合物的复合吸附剂,它们被限制在硅胶介孔内,并考虑到HeCol循环在各种边界温度下的吸附性能,分析了它们在甲醇中的吸附平衡。结果表明,这些复合吸附剂每1克复合物中最多交换0.48克甲醇,远远超过了普通活性炭的该值。最后,建立了第一个实验室规模的HeCol原型,并使用一种研究的吸附剂CaClBr / SiO2进行了测试,以评估该循环的可行性。

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