干旱区生态环境知识资源中心(Arid): Enhancement of freshwater production of the seawater greenhouse condenser

Arid

	Enhancement of freshwater production of the seawater greenhouse condenser
	Bait Suwailam Tahani K; Al-Ismaili Abdulrahim M; Al-Azri Nasser A; Janitha Jeewantha L H; Kotagama Hemesiri
来源期刊	干旱区科学
ISSN	1674-6767
出版年	2021
卷号	13 期号:4 页码:1674-6767
英文摘要	Seawater greenhouse (SWGH) is a technology established to overcome issues related to open field cultivation in arid areas, such as the high ambient temperature and the shortage of freshwater. It adopts the humidification-dehumidification concept where evaporated moisture from a saline water source is condensed to produce freshwater within the greenhouse body. Various condenser designs are adopted to increase freshwater production in order to meet the irrigation demand. The aim of this study was to experimentally investigate the practicality of using the packed-type direct contact condenser in the SWGH to produce more freshwater at low costs, simple design and high efficiency, and to explore the impact of the manipulating six operational variables (inlet air temperature of the humidifier, air mass flowrate of the humidifier, inlet water temperature of the humidifier, water mass flowrate of the humidifier, inlet water temperature of the dehumidifier and water mass flowrate of the dehumidifier) on freshwater condensation rate. For this purpose, a direct contact condenser was designed and manufactured. Sixty-four full factorial experiments were conducted to study the effect of the six operational variables. Each variable was operated at two levels (high and low flowrate), and each experiment lasted for 10 min and followed by a 30-min waiting time. Results showed that freshwater production varied between 0.257 and 2.590 L for every 10 min. When using Minitab statistical software to investigate the significant variables that contributed to the maximum freshwater production, it was found that the inlet air temperature of the humidifier had the greatest influence, followed by the inlet water temperature of the humidifier; the former had a negative impact while the latter had a positive impact on freshwater production. The response optimizer tool revealed that the optimal combination of variables contributed to maximize freshwater production when all variables were in the high mode and the inlet air temperature of the humidifier was in the low mode. The comparison between the old plastic condenser and the new proposed direct contact condenser showed that the latter can produce 75.9 times more freshwater at the same condenser volume.
英文关键词	seawater greenhouse humidification-dehumidification direct contact condenser freshwater production water desalination
类型	Article
语种	英语
国家	中国
开放获取类型	Bronze
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6959620
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365045
作者单位	Bait Suwailam Tahani K, Department of Soils, Water and Agricultural Engineering, Sultan Qaboos University, Al-Khoud, 123, Oman.; Al-Ismaili Abdulrahim M, Department of Soils, Water and Agricultural Engineering, Sultan Qaboos University, Al-Khoud, 123, Oman.; Janitha Jeewantha L H, Department of Soils, Water and Agricultural Engineering, Sultan Qaboos University, Al-Khoud, 123, Oman.; Al-Azri Nasser A, Department of Mechanical and Industrial Engineering, Sultan Qaboos University, Al-Khoud, 123, Oman.; Kotagama Hemesiri, Department of Natural Resource Economics, Sultan Qaboos University, Al-Khoud, 123, Oman.
推荐引用方式 GB/T 7714	Bait Suwailam Tahani K,Al-Ismaili Abdulrahim M,Al-Azri Nasser A,et al. Enhancement of freshwater production of the seawater greenhouse condenser[J],2021,13(4):1674-6767.
APA	Bait Suwailam Tahani K,Al-Ismaili Abdulrahim M,Al-Azri Nasser A,Janitha Jeewantha L H,&Kotagama Hemesiri.(2021).Enhancement of freshwater production of the seawater greenhouse condenser.干旱区科学,13(4),1674-6767.
MLA	Bait Suwailam Tahani K,et al."Enhancement of freshwater production of the seawater greenhouse condenser".干旱区科学 13.4(2021):1674-6767.