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Modeling, simulation and experimental validation of a pad humidifier used in solar desalination process

机译：太阳能淡化过程中使用的垫式加湿器的建模，仿真和实验验证

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摘要

Water is an extremely important commodity for the improvement of arid and semi-arid environments. As for the water production technology, desalination techniques based on either thermal or membrane separation methods such as multi-stage flash, multi-effect, vapor compression and reverse osmosis are only reliable for large capacity ranges of 100-50,000 m3/ day of freshwater production, inefficient from the view point of energy consumption and generally coupled to fossil fuel sources that have a negative impact on the environment. Hence, for the improvement of these regions it is necessary to shift from fossil fuel usage to some environmentally friendly energy source, such as solar energy, as it is available abundantly in such environments. The aim of the present paper is to study numerically and experimentally a pad humidifier used in a seawater solar desalination unit based on humidi-fication-dehumidification principle. The pad humidifier dynamic modeling is based on various heat and mass balance equations. The effect of operating parameters on the pad humidifier characteristics has been investigated. To validate the computer program, a comparison between the experimental and theoretical results was conducted, and a good agreement had been obtained.
机译：水是改善干旱和半干旱环境的极为重要的商品。对于水生产技术，基于热分离或膜分离方法的脱盐技术（例如多级闪蒸，多效，蒸气压缩和反渗透）仅对于每天生产100-50,000 m3的大容量范围是可靠的从能源消耗的角度来看效率低下，并且通常会与对环境造成负面影响的化石燃料来源结合使用。因此，为了改善这些地区，有必要从化石燃料的使用转向某些环境友好的能源，例如太阳能，因为在这种环境中大量可用。本文的目的是基于加湿-除湿-除湿原理，对来自海水淡化装置的垫式加湿器进行数值和实验研究。垫式加湿器动态建模基于各种热量和质量平衡方程。已经研究了操作参数对垫式加湿器特性的影响。为了验证计算机程序，对实验结果和理论结果进行了比较，并获得了良好的共识。

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