Distribution Solar Energy Collection And Central Storage Based On Phase Change Material

Solar energy is a clean and inexhaustible energy. But it is an intermittent energy due to the weather and season. So the efficient use of solar energy is a very important research topic. In this paper we describe a system where the solar collecting system is a distribution system with a central storage part realized by pipeline transportation. For solar collecting system, the distribution structure used can solve the problem of heat collector with oversize for the floor space. It is well known that heat storage is an important part in solar collecting system. In the center heat storage part and heat storage materials are always water and gravel-water etc. , which use sensible heat to store thermal energy. But the sensible heat is limited due to its lack of capacity. Phase change material is a type of thermal energy storage material which has higher heat storage capability than that of sensible heat storage material. Therefore, phase change materials are used for thermal energy storage in the bad weather and related cases.Solar energy is a clean and inexhaustible energy. But it is an intermittent energy due to the weather and season. So the efficient use of solar energy is a very important research topic. In this paper we describe a system where the solar collecting system is a distribution system with a central storage part realized by pipeline transportation. For solar collecting system, the distribution structure used can solve the problem of heat collector with oversize for the floor space. It is well known that heat storage is an important part in solar collecting system. In the center heat storage part and heat storage materials are always water and gravel-water etc. , which use sensible heat to store thermal energy. But the sensible heat is limited due to its lack of capacity. Phase change material is a type of thermal energy storage material which has higher heat storage capability than that of sensible heat storage material. Therefore, phase change materials are used for thermal energy storage in the bad weather and related cases

mgh2储氢热力学研究进展

近年来,材料和能源领域中高能量密度车载储氢材料的研究和开发吸引了世界各国科技工作者的广泛兴趣.MgH_2作为一种相对廉价的固体储氢材料,其理论储氢量高达7.6 wt%,且循环吸放氢性能较好,业已成为储氢材料领域的研究热点.本文着重从热力学的角度,对MgH_2储氢材料的近期研究进展,特别是其储氢热力学性能的改进,包括纳米化、复合、催化、限域以及理论计算等方面进行简要综述,旨在明确当今MgH_2作为潜在可应用储氢材料的研究重点和未来发展趋势