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采用液相浸泡法,将吸湿性无机盐CaC l2与硅胶复合,制备出低温复合储能材料.对硅胶和复合储能材料的吸湿性能进行了对比实验,并利用吸附储能实验装置测试了它们的储能性能,研究了影响复合储能材料性能的因素.结果表明:较为合适的浸泡时间为4 h;提高CaC l2含量和浸泡温度有利于复合储能材料吸湿量和质量热力学能(储能密度)的提高;随着吸湿能力的增强,复合储能材料的质量热力学能增大,可达1 050 J/g;同时,该复合储能材料可在90℃温度下有效再生,适用于太阳能、工业废热等低温热的储存和利用.
The liquid-phase immersion method was used to composite hygroscopic inorganic salt CaC12 with silica gel to prepare low-temperature composite energy storage materials.The moisture absorption performance of silica gel and composite energy storage materials were compared and tested by adsorption energy storage device The results show that the more suitable immersion time is 4 h, and the increase of CaCl 2 content and immersion temperature is beneficial to the moisture absorption and mass thermodynamic energy (energy storage Density). With the increase of hygroscopicity, the mass thermodynamics of composite energy storage materials can increase up to 1 050 J / g. Meanwhile, the composite energy storage material can be effectively regenerated at 90 ℃, which is suitable for solar energy , Industrial waste heat and other low-temperature heat storage and utilization.