Resolution of energy balance equations for cascade solar still using Matlab/SimulikTM

机译：梯形太阳能仍然使用MATLAB / Simulink的能量平衡方程分衡方程分衡

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The need for production of fresh water from brackish water is considerably high, especially in dry regions. In this paper a new approach to design of solar still absorber plate was developed and its effect on the productivity was investigated theoretically. A mathematical model was developed to calculate the theoretical productivity of the solar still. The energy balance equations for the various elements of the solar still are formulated and numerically solved; using the dynamic simulation program Matlab/SimulinkTM. The performance of the still was investigated. The results show that the thermal performance of a modified stepped solar still can be considerably improved through the new modification.

机译：从咸水中生产淡水的需要大大高，特别是在干燥区域。本文开发了一种新的太阳能吸收板设计方法，从理论上调查了对生产率的影响。开发了一种数学模型来计算太阳的理论生产力。太阳能各种元素的能量平衡方程仍在配制和数值求解;使用动态仿真程序MATLAB / SIMULINKTM。仍在调查的表现。结果表明，通过新修改可以显着提高改进的阶梯式太阳能的热性能。

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《International Conference on Electrical and Information Technologies》|2016年|1 v.|共5页
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Bouzaid Mariam; Oubrek Mohamed; Ansari Omar; Sabri Ahmed; Taha Janan Mourad;
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中图分类电化教育;
关键词
Heating; Glass; MATLAB; Numerical models; Phase change materials; Convection;

机译：加热;玻璃;MATLAB;数值模型;相变材料;对流;

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4. Resolution of energy balance equations for cascade solar still using Matlab/SimulikTM [C] . Bouzaid Mariam, Oubrek Mohamed, Ansari Omar, 2016 International Conference on Electrical and Information Technologies . 2016

机译：使用Matlab / Simulink解析级联太阳能静止系统的能量平衡方程
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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。

Resolution of energy balance equations for cascade solar still using Matlab/SimulikTM

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