Solar distillation using a blackened mixture of Portland cement and alluvial sand as a heat storage medium

Sellami M. H.; Guemari S.; Touahir R.; Loudiyi K.

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Solar distillation using a blackened mixture of Portland cement and alluvial sand as a heat storage medium

机译：使用波特兰水泥和冲积砂的变黑混合物作为储热介质进行太阳能蒸馏

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Solar energy is one of renewable energies source to produce drinkable water to supply isolated low-density population areas such as those located in southern Algeria.

机译：太阳能是生产饮用水的可再生能源之一，可为偏远的低密度人口地区（例如阿尔及利亚南部的人口）提供饮用水。

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《Desalination: The International Journal on the Science and Technology of Desalting and Water Purification》 |2016年第null期|共7页
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Sellami M. H.; Guemari S.; Touahir R.; Loudiyi K.;
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正文语种 eng
中图分类试剂与纯化学品的生产;
关键词
Solar desalination; Heat storage system; Portland cement; Alluvial sand; Photocatalysts;

机译：太阳能淡化;储热系统;硅酸盐水泥;冲积砂;光催化剂;

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1. Solar distillation using a blackened mixture of Portland cement and alluvial sand as a heat storage medium [J] . Sellami M. H., Guemari S., Touahir R., Desalination: The International Journal on the Science and Technology of Desalting and Water Purification . 2016,第Null期

机译：使用波特兰水泥和冲积砂的变黑混合物作为储热介质进行太阳能蒸馏
2. Use of Portland cement as heat storage medium in solar desalination [J] . Sellami M. Hassen, Touahir R., Guemari S., Desalination: The International Journal on the Science and Technology of Desalting and Water Purification . 2016,第Null期

机译：硅酸盐水泥在太阳能淡化中用作储热介质
3. Investigation of the Flowability and the Thermal Behavior of Sand /Basalt-Mixture in Moving Bed Heat Exchanger (MBHX) as Heat Transfer Medium for Concentrating Solar Tower Plants [J] . Louy Qoaider, Suhil Kiwan, Qahtan Thabit Jordan Journal of Mechanical and Industrial Engineering . 2016,第4期

机译：砂/玄武岩混合物在移动床热交换器（MBHX）中的流动性和热行为的研究
4. Gravity-fed combined solar receiver/storage system using sand particles as heat collector, heat transfer and thermal energy storage media [C] . A. Crespo Iniesta, M. Diago, T. Delclos International Conference on Concentrating Solar Power and Chemical Energy Systems . 2015

机译：重力馈送组合太阳能接收器/存储系统使用沙粒作为热集电极，传热和热能存储介质
5. Investigating the Use of Class C Flyash-Based Geopolymer Cement as a Potential Alternative to Portland Cement to Seal CO2 Storage Wells [D] . Jani, Priyesh Parimal. 2019

机译：研究使用C类粉煤灰基聚合物水泥作为波特兰水泥封闭CO2储存井的潜在替代方法
6. Experimental Study on Artificial Cemented Sand Prepared with Ordinary Portland Cement with Different Contents [O] . Dongliang Li, Xinrong Liu, Xianshan Liu 2015

机译：不同含量普通硅酸盐水泥制备人工胶结砂的试验研究
7. This article presents a new numerical model describing the behaviour of a thermally thick wood sample exposed to high solar heat flux (above 1 MW/m2). A preliminary study based on dimensionless numbers is used to classify the problem and support model building assumptions. Then, a model based on mass, momentum and energy balance equations is proposed. These equations are coupled with liquid-vapour drying model and pseudo species biomass degradation model. By comparing to a former experimental study, preliminary results have shown that these equations are not enough to accurately predict biomass behaviour under high solar heat flux. Indeed, a char layer acting as radiative shield forms on the sample exposed surface. In addition to this classical set of equations, it is mandatory to take into account radiation penetration into the medium. Furthermore, as biomass contains water, medium deformation consecutively to char steam gasification must also be implemented. Finally, with the addition of these two strategies, the model is able to properly capture the degradation of biomass when exposed to high radiative heat flux over a range of sample initial moisture content. Additional insights of biomass behaviour under high solar heat flux were also derived. Drying, pyrolysis and gasification fronts are present at the same time inside of the sample. The coexistence of these three thermochemical fronts leads to char gasification by the steam produced from drying of the sample, which it is the main phenomenon behind medium ablation. [O] . Pozzobon, Victor, Salvador, Sylvain, Bézian, Jean Jacques 2018

机译：本文提供了一个新的数值模型，该模型描述了暴露于高太阳热通量（高于1 / MW / m2）的热厚木材样品的行为。基于无量纲数的初步研究用于对问题进行分类并支持模型构建假设。然后，提出了一种基于质量，动量和能量平衡方程的模型。这些方程式与液体蒸汽干燥模型和假物种生物质降解模型耦合。通过与以前的实验研究进行比较，初步结果表明，这些方程不足以准确预测高太阳热通量下的生物量行为。的确，在样品暴露的表面上形成了充当辐射屏蔽层的炭层。除了这套经典的方程式之外，还必须考虑到辐射向介质的渗透。此外，由于生物质中含有水，因此还必须在炭蒸气汽化后进行连续的介质变形。最后，通过添加这两种策略，该模型能够在一定范围的样品初始水分含量下暴露于高辐射热通量的情况下，正确捕获生物质的降解。还得出了在高太阳热通量下生物量行为的其他见解。样品内部同时存在干燥，热解和气化前沿。这三个热化学前沿的共存会导致样品干燥产生的蒸汽产生焦炭气化，这是介质烧蚀的主要现象。

Solar distillation using a blackened mixture of Portland cement and alluvial sand as a heat storage medium

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