自然循环加湿/除湿太阳能蒸馏器，内置被动冷凝器

作者:Ahmad Ghazy, Hassan E.S. Fath和Samy Elsherbiny

海水淡化169 (2004)129-149

摘要

对自然循环加湿/除湿太阳能蒸馏器的瞬态热性能进行了数值研究。比较了强制循环性能以及不同环境、设计和操作参数对蒸馏效率和生产率的影响。自然循环仍然显示出与强制循环非常相似的结果。这一发现具有重大的技术和经济意义。对于部分储存盆地能量和部分回收冷凝能量的影响，已经考虑了不同的尝试。结果表明，静压性能变化不大。会议还强调了对水生产成本的经济评估，并表明太阳能蒸馏器在特殊应用方面可以挑战其他技术。2021欧洲杯单场彩票007胜胜

作者

哈桑·e·s·法斯(4),Ahmad Ghazy(1),萨米Elsherbiny(1）

结论

图16所示。制造的硬盘太阳能仍然。1.研究了自然循环硬盘太阳能蒸馏器的热性能。蒸馏器的设计很简单，有一个倾斜的结构。结果表明，该工艺的生产效率约为5.1 kg/m2。D，类似于强迫循环模式[2]。除了简单之外，自然循环比强制循环更经济，技术上也更简单。2.不同的环境、设计和操作参数的影响表明，增加太阳强度(高输入能量)和环境温度(低能量损失)可以提高蒸馏器的生产率。这是太阳能脱盐的一个优势，因为在夏季条件下，水产量增加，这与该季节的水需求一致。 3. Different attempts to partially store basin energy and/or recover condensation energy were also studied. These attempts cover (1) only partial storage of basin energy for overnight reuse, (2) only partial recovery of condensation energy at the condenser, and (3) a combination of energy storage and partial recovery. The results show an insignificant improvement in the still’s productivity. It is more economical, therefore, to store water rather than store energy. 4. An economical assessment of water production costs shows that 1.0 m3 of product water costs 45 EP ($9). However, if the still cost is reduced to 100 EP, then 1.0 m3 will cost only 25 EP ($5). In general, solar stills cannot challenge the lower cost of large units (MSF, RO, etc.). However, for special applications of (1) very small communities demands, (2) unavailability of fresh drinking water in remote areas, (3) unavailability of energy (fuel or electricity) and (4) unavailability of technical support within the communities, solar stills seem to be the only (technically and economically) competing alternative.

来源:http://www.desline.com/articoli/5880.pdf

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