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Integrated novel solar distillation and solar single-effect absorption systems
Desalination ( IF 8.3 ) Pub Date : 2021-03-10 , DOI: 10.1016/j.desal.2021.115032
Ahmad K. Sleiti , Wahib A. Al-Ammari , Mohammed Al-Khawaja

Novel hybrid single-slope solar distillation systems integrated with single-effect solar absorption cooling system are designed, analyzed and optimized for production of cooling effect and freshwater, simultaneously. The innovative integrated systems are capable of recovering significant portion of the released heat of their own components that is otherwise wasted; with superior performance and lower cost than available systems. The integration of the two solar systems is proposed in three strategic heat recovery configurations: (S1) recovers waste heat from the water vapor leaving the generator, (S2) recovers waste heat from the strong lithium bromide solution leaving the generator, and (S3) recovers waste heat from the hot liquid water leaving the generator. The results show that the productivity of the still is boosted by three-folds compared to the conventional system. S2 negatively affects the COP of the absorption system, however, it improves still productivity to higher values than S1.The COP of S3 is comparable to S1, while the still productivity of S3 is the highest with only slight increase in the area of the evacuated tube collector. S1 has the advantage of enhancing the still productivity and reducing the condenser cooling load without affecting the COP of the basic absorption system. The integrated system achieved an impressive cooling capacity of 20 kW, and still productivity of 10 kg/m2-day with COP of 0.85 at conservative solar radiation of 500 W/m2. The cost of the distilled water in S3 (0.047 $/kg) is lower than in S2 (0.054 $/kg) and S1 (0.061 $/kg).



中文翻译:

集成的新型太阳能蒸馏和太阳能单效应吸收系统

设计,分析和优化了与单效太阳能吸收式冷却系统集成在一起的新型混合式单坡度太阳能蒸馏系统,以同时产生冷却效果和淡水。创新的集成系统能够回收其自身组件释放的大部分热量,否则这些热量将被浪费掉;与现有系统相比,具有卓越的性能和更低的成本。两种太阳能系统的集成提出了三种战略性的热回收配置:(S1)从离开发生器的水蒸气中回收废热;(S2)从离开发生器的强溴化锂溶液中回收废热;以及(S3)从离开发电机的液态热水中回收废热。结果表明,与传统系统相比,蒸馏器的生产率提高了三倍。S2对吸收系统的COP产生负面影响,但是,它仍将静态生产率提高到比S1高的值.S3的COP与S1相当,而S3的静态生产率最高,而排空面积仅略有增加管收集器。S1具有在不影响基本吸收系统的COP的情况下提高静止生产率并降低冷凝器冷却负荷的优点。集成系统实现了令人印象深刻的20 kW制冷量和10 kg / m的生产率 S3的静止生产率最高,而真空管收集器的面积仅略有增加。S1具有在不影响基本吸收系统的COP的情况下提高静止生产率并降低冷凝器冷却负荷的优点。集成系统实现了令人印象深刻的20 kW制冷量和10 kg / m的生产率 S3的静止生产率最高,而真空管收集器的面积仅略有增加。S1具有在不影响基本吸收系统的COP的情况下提高静止生产率并降低冷凝器冷却负荷的优点。集成系统实现了令人印象深刻的20 kW制冷量和10 kg / m的生产率在500 W / m 2的保守太阳辐射下,COP为2天,COP为0.85 。S3中的蒸馏水成本(0.047 $ / kg)低于S2(0.054 $ / kg)和S1(0.061 $ / kg)。

更新日期:2021-03-10
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