为提高淡水产量,设计一种太阳能负压式太阳能加湿除湿海水淡化系统,通过减小加湿腔体内压强来增加湿空气中含湿量,湿空气分别在液环真空泵和除湿腔内冷凝收集得到淡水。湿空气中含湿量上升,日产淡水总量增加。当湿空气温度70 ℃时,加湿腔压强从90 kPa减至70 kPa,含湿量增加154.9 g/kg;加湿腔压强70 kPa时,12：00—14：00可稳定产淡水1.8 kg/h以上,最高可达2.1 kg/h。装置性能系数GOR最高可达1.7。
Abstract
In order to increase the freshwater production, a solar humidification and dehumidification system under sub-atmospheric pressure for desalination is proposed. The moisture content of the humid air increased by decreasing the humidifier pressure. The freshwater is collected in the liquid ring vacuum pump and the dehumidifier. The freshwater production increases when the moisture content in humid air increases. The humidifier pressure decreases from 90 to 70 kPa, the humidity can increase 154.9 g/kg when the humid air temperature is 70 ℃; When the humidifier pressure is 70 kPa, the freshwater is above 1.8 kg/h from 12:00 to 14:00 and the maximum output is 2.1 kg/h. The GOR reaches up to 1.7.
关键词
海水淡化 /
太阳能 /
加湿除湿 /
负压 /
含湿量 /
性能分析
Key words
desalination /
solar energy /
humidification and dehumidification /
subatmospheric pressure /
moisture content /
performance analysis
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] SHATAT M, WORALL M, RIFFAT S.Opportunities for solar water desalination worldwide: Review[J]. Sustainable cities and society, 2013, 9: 67-80.
[2] DENIZ E, CINAR S.Energy, exergy, economic and environmental (4E) analysis of a solar desalination system with humidification-dehumidification[J]. Energy conversion and management, 2016, 126(Oct): 12-19.
[3] GIWA A, NAWSHAD A, HOUSANI A A.Recent advances in humidification dehumidification(HDH) desalination processes: Improved designs and productivity[J]. Renewable and sustainable energy reviews, 2016, 57: 929-944.
[4] HAMED M H, KABEEL A E, OMARA Z M, et al.Mathematical and experimental investigation of a solar humidification-dehumidification desalination unit[J]. Desalination, 2015, 358: 9-17.
[5] 李正良, 伍纲, 陈名贤, 等. 叠置式太阳能加湿除湿海水淡化系统的稳态性能研究[J]. 太阳能学报, 2018, (6): 1481-1488.
LI Z L, WU G, CHEN M X, et al.Steady state performance research of superosition solar humidification and dehumidification desalination system[J]. Acta energiae solaris sinica, 2018, 39(6): 1481-1488.
[6] TARIQ R, SHEIKH N A, XAMÁN J, et al. An innovative air saturator for humidification-dehumidification desalination application[J]. Applied energy, 2018, 228: 789-907.
[7] NARAYAN G P, MCGOVERN R K, LIENHARD J H, et al.Variable pressure humidification dehumidification desalination system[C]//ASME/JSME Thermal Engineering Joint Conference, Honolulu, HI, USA. 2011.
[8] SIDDIQUI O K, SHARQAWY M H, ANTA M A, et al.Performance evaluation of variable pressure humidification-dehumidification systems[J]. Desalination, 2017, 409: 171-182.
[9] HERMOSILLO J J, ARANCIBIA-BULNES C A, ESTRADA C A. Water desalination by air humidification: Mathematical and experimental study[J]. Solar energy, 2012, 86(4): 1070-1076.
[10] EL-AGOUZ S A. A new process of desalination by air passing through seawater based on humidification-dehumidification process[J]. Energy, 2010, 35(12): 5108-5114.
基金
国家自然科学基金（51766018）; 云南省大学生创新创业训练计划（202010681023）; 云南省大学生创新创业训练计划（S201910681047）
PDF(1712 KB)
