在遥远和干旱地区使用太阳能剧照,将咸水或咸水转化为适合人类使用的饮用水,负担得起的,和有效的方式。即使使用PCM材料,典型的太阳能系统每天的产量仍然很少。在这项研究中,进行了实验测试,以提高单斜率太阳能仍然与PCM材料(石蜡)和太阳能电加热器相结合的性能。设计了两个相同的单坡太阳剧照,制作,并在2021年夏季和春季在Al-Arish的相同气候条件下进行了测试,埃及。第一种是传统的太阳能静止(CVSS),另一个也是传统的,但与PCM和电加热器(CVSSWPCM)。在实验过程中测量了几个参数,包括太阳强度,气象方面,累积淡水产量,平均玻璃,水温和PCM温度。在不同的工作温度下对改进的太阳能仍然进行了评估,并与传统的传统太阳能进行了比较。研究了四种情况:一种情况下没有加热器(仅限石蜡),另外三种情况下的加热器在58°C下运行,60°C,65°C,分别。实验结果表明,激活石蜡内部的加热器使日产量(i)在春季分别增加了2.38、2.66和3.1倍,(ii)在夏季分别增加了2.2、2.39和2.67倍上述三个温度(与传统的静止相比)。此外,在春季和夏季,在石蜡温度为65°C的情况下,每天的淡水产量最高(案例5)。最后,改装后的太阳能仍然是根据每升成本进行的经济评估。带有在65°C下运行的加热器的改良太阳能仍然比传统太阳能具有更高的经济价值。案例1和案例5的最大二氧化碳减排量约为28吨和160吨,分别。
Solar stills are used in distant and arid areas to convert brackish or salty water into potable water fit for human use in a simple, affordable, and effective manner. Even when PCM materials are used, typical solar systems still have minimal production per day. In this study, experimental tests were carried out in order to increase the performance of a single-slope solar still combined with PCM material (paraffin wax) and a solar-powered electric heater. Two identical single-slope solar stills were designed, fabricated, and tested under the same climatic conditions during the summer and spring seasons of 2021 in Al-Arish, Egypt. The first is a conventional solar still (CVSS), and the other is also a conventional still but with PCM and an electric heater (CVSSWPCM). Several parameters were measured during the experiments, including sun intensity, meteorological aspects, cumulative freshwater production, average glass, and water temperatures and PCM temperature. The improved solar still was evaluated at different operating temperatures and was compared to the conventional traditional one. There were four cases studied: one case without a heater (paraffin wax only) and three other cases with a heater operating at 58 °C, 60 °C, and 65 °C, respectively. The experimental results revealed that activating the heater inside the paraffin wax increased daily production (i) in the spring by 2.38, 2.66, and 3.1 times and (ii) and in the summer by 2.2, 2.39, and 2.67 times at the three above-mentioned temperatures respectively (when compared to the traditional still). In addition, the maximum rate of daily freshwater production was achieved at paraffin wax temperature of 65 °C in both spring and summer (Case 5). Finally, the economic evaluation of the modified solar still was carried out according to cost per litre. The modified solar still with a heater operating at 65 °C has a higher exergoeconomic value than the traditional one. The maximum CO2 mitigation in cases 1 and 5 was approximately 28 tons and 160 tons, respectively.