Experimental evaluation of a two-stage indirect solar dryer with reheating coupled with HDH desalination system for remote areas
Experimental evaluation of a two-stage indirect solar dryer with reheating coupled with HDH desalination system for remote areas
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DOI：
10.1016/j.desal.2017.10.016
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发表时间：
2018
期刊：
影响因子：
9.9
通讯作者：
A. Kabeel;M. Abdelgaied
中科院分区：
文献类型：
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作者：
A. Kabeel;M. Abdelgaied
在本研究中，实验研究了带再加热耦合加湿-除湿（HDH）海水淡化系统的两级间接太阳能干燥器的性能评价。蒸馏水的生产、产品的干燥和节能是本实验工作的主要目的。由于偏远地区馏分水和能源的可用性存在问题，该系统为偏远地区提供了一个很好的选择。该系统由两个子系统组成：(i)带再加热的两级间接太阳能干燥机，可用于去除植物和水果中的水分；（二）HDH海水淡化，可用于生产馏分水。实验结果表明，当空气流量从50 m3/h增加到75 m3/h时，蒸馏水产率从29.55 l/d增加到42.3 l/d，产品除湿率从8.33 kg/d增加到12.37 kg/d。与第一阶段干燥装置相比，使用带再加热的两阶段干燥器平均提高了产品的除湿率71.78%。此外，仅当气流速率从50 m3/h增加到75 m3/h时，所提出的系统和HDH脱盐系统的增益输出比在1.24-1.79和0.97-1.38范围内变化。与HDH海水淡化系统相比，该系统的增益输出比平均提高了29%。
In the present study, the performance evaluations of a two-stage indirect solar dryer with reheating coupled with humidification-dehumidification (HDH) water desalination systems are experimentally investigated. The distillate water production, drying the products and energy-saving represents the main objective of the present experimental work. Due to problems in the availability of distillate water and energy sources in remote areas, the proposed system represents a good option for remote areas. The proposed system consists of two sub-systems: (i) two-stage indirect solar dryer with reheating, which can use to remove the moisture contents from the plants and fruit; (ii) the HDH water desalination, which can use to production of distillate water. The experimental results show that, as the air flow increases from 50 to 75 m3/h, the distillate water productivity increases from 29.55 to 42.3 l/day and the moisture removal from the product increases from 8.33 to 12.37 kg/day during the period 8:00 am to 7:00 pm. Use a two-stage dryer with reheating improved the moisture removal from the product by 71.78% in average as compared only to the first stage of drying unit. Also, the gain output ratio varies over ranges of 1.24–1.79 and 0.97–1.38 for the proposed system and the HDH desalination system only, when the airflow rate increases from 50 to 75 m3/h. The gain output ratio of the proposed system improved by 29% in average as compared only to the HDH desalination system.