提出一种多级鼓泡式加湿除湿型海水淡化装置。该装置主要由多曲面太阳能聚光系统、加湿层和除湿层以及相应的泵和管路组成。经聚光器加热后的高温空气在风机驱动下分别进入加湿层和除湿层,热风穿过各级筛板及筛孔,产生气泡,增大了空气与水的接触面积,强化了传热传质过程。在不同天气下对装置进行实验研究,结果表明：在晴朗天气下,装置的太阳能利用率最高可达0.41,淡化装置效率最大可达1.23,最大产水速率为3.66 kg/h,全天产水量为17.08 kg;在非晴朗天气下,装置产水量为12.43 kg。
Abstract
A multistage bubble humidifying and dehumidifying seawater desalination device is proposed. The device is mainly composed of multi-curved solar concentrator, humidifying layer and dehumidifying layer. Driven by the fan, the high temperature air heated by the condenser passes through the screen plates and screen holes at all levels, generating bubbles, increasing the contact area between air and water and strengthening the process of heat and mass transfer. Experimental research was carried out on the device under different weather conditions. The results showed that in sunny weather, the solar energy utilization rate of the device could reach up to 0.41, the desalination efficiency could reach up to 1.23, the maximum water yield rate was 3.66 kg/h, and the all-day water yield was 17.08 kg. Under unsunny weather, the unit yield is 12.43 kg.
关键词
太阳能 /
海水淡化 /
加湿除湿 /
多级鼓泡
Key words
solar energy /
seawater desalination /
humidification-dehumidification /
multi-stage bubbling
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] SIDDIQUI F R, ELMINSHAWY N A S, ADDAS M F. Design and performance improvement of a solar desalination system by using solar air heater: Experimental and theoretical approach[J]. Desalination, 2016, 399: 78-87.
[2] RAHBAR N, ESFAHANI J A, ASADI A.An experimental investigation on productivity and performance of a new improved design portable asymmetrical solar still utilizing thermoelectric modules[J]. Energy conversion and management, 2016, 118: 55-62.
[3] SHARQAWY M H, ANTAR M A, ZUBAIR S M, et al.Optimum thermal design of humidification dehumidification desalination systems[J]. Desalination, 2014, 349: 10-21.
[4] RAJASEENIVASAN T, SRITHAR K.An investigation into a laboratory scale bubble column humidification dehumidification desalination system powered by biomass energy[J]. Energy conversion and management, 2017, 139: 232-244.
[5] MEHRGOO M, AMIDPOUR M.Derivation of optimal geometry of a multi-effect humidification-dehumidification desalination unit: A constructed design[J]. Desalination, 2011, 281: 234-242.
[6] CHAFIK E.Design of plants for solar desalination using the multi-stage heating/humidifying technique[J]. Desalination, 2004, 168(SI): 55-71.
[7] MOUSA K, ABU A, KANDI V R.Performance evaluation of desalination processes based on the humidification dehumidification cycle with different carrier gases[J]. Desalination, 2003, 156: 281-293
[8] AL-SULAIMAN F A, IFRAS Z M, ATIF M, et al. Humidification dehumidification desalination system using parabolic trough solar air collector[J]. Applied thermal engineering, 2015, 75: 809-816.
[9] ZHANG L X, GAO S Y, CHEN W B, et al. Performances comparison of different solar desalination processes by bubbling humidification[J]. Advanced materials research, 2011, 282-283: 584-588.
[10] 沈维道, 童钧耕. 工程热力学[M]. 北京: 高等教育出版社, 2007: 378-382.
SHEN W D, TONG J G.Engineering thermodynamics[M]. Beijing: Higher Education Press, 2007: 378-382.
[11] 刘忠. 多效鼓泡蒸发式太阳能海水淡化技术研究[D]. 杭州: 浙江大学, 2010: 71.
LIU Z.Research on multi-effect bubbling evaporative solar water desalination technology[D]. Hangzhou: Zhejiang University, 2010: 71.
[12] LIU F, ZHENG H, JIN R, et al.Design of a multi-surface solar concentrator[J]. Journal of daylighting, 2019, 6(2): 176-186.
基金
北京市自然科学基金：“多级降落式液相分离过程的强化及在太阳能海水淡化中的应用”（3192031）
PDF(1927 KB)
