Jordan lies in high solar insolation band and the vast solar potential can be exploited to convert saline water to potable water. The most economical and easy way to accomplish this objective is using solar still. Modeling and performance analysis of a single slope tilted solar still were investigated in this paper A computer simulation of the still is carried out to examine and predict its unsteady-state thermal performance. Runge–Kutta method of the fifth order was used to solve the developed partial differential equations numerically for the theoretical model of the solar still, and with the transient effects accounted for. Prediction of the time-dependent temperature distribution along the absorber plate for the brine water, the absorber, and glass cover was achieved. The thermal efficiency of the solar still over a day was predicted at different operating conditions (Solar input, ambient temperature, dust and wind velocity). The results of the simulation mathematical model were validated by comparison with experimental data obtained from an experimental tilted solar still system that has been built for comparison purposes. The performance of both systems, theoretical and experimental, is assessed under the same conditions. Numerical and experimental results showed reasonable agreement, and the best performance was obtained at flow rate of $$ \dot{m} $$ of 0.348 kg/h for both the experimental and numerical results. Also, the work indicates that the theoretical model can be employed in the design of solar stills.

中文翻译：

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单坡度倾斜太阳能蒸馏器非稳态热性能的建模与分析

约旦地处日照高带，可以利用巨大的太阳势将盐水转化为饮用水。实现此目标的最经济，最简便的方法是使用太阳能蒸馏器。本文研究了单斜度倾斜太阳能蒸馏器的建模和性能分析。对蒸馏器进行了计算机模拟，以检查和预测其非稳态热性能。五阶Runge-Kutta方法用于数值求解太阳静止理论模型的偏微分方程，并考虑了瞬态效应。预测了沿着盐水吸收器，吸收器和玻璃盖沿着吸收器板的随时间变化的温度分布。在不同的运行条件（太阳能输入，环境温度，灰尘和风速）下，可以预测一天中仍然静止的太阳能的热效率。通过与从为倾斜目的而建造的实验性倾斜太阳能静止系统中获得的实验数据进行比较，对仿真数学模型的结果进行了验证。理论和实验两个系统的性能均在相同条件下评估。数值和实验结果表明合理的一致性，并且在0.348 kg / h的流量下获得了最佳性能。而且，该工作表明该理论模型可以用于太阳剧照的设计。通过与从为倾斜目的而建造的实验性倾斜太阳能静止系统中获得的实验数据进行比较，对仿真数学模型的结果进行了验证。理论和实验两个系统的性能均在相同条件下评估。数值和实验结果表明合理的一致性，并且在0.348 kg / h的流量下获得了最佳性能。而且，该工作表明该理论模型可以用于太阳剧照的设计。通过与从为倾斜目的而建造的实验性倾斜太阳能静止系统中获得的实验数据进行比较，对仿真数学模型的结果进行了验证。理论和实验两个系统的性能均在相同条件下评估。数值和实验结果表明合理的一致性，并且在0.348 kg / h的流量下获得了最佳性能。而且，该工作表明该理论模型可以用于太阳剧照的设计。在相同条件下评估。数值和实验结果表明合理的一致性，并且在0.348 kg / h的流量下获得了最佳性能。而且，该工作表明该理论模型可以用于太阳剧照的设计。在相同条件下评估。数值和实验结果表明合理的一致性，并且在0.348 kg / h的流量下获得了最佳性能。而且，该工作表明该理论模型可以用于太阳剧照的设计。