干旱区生态环境知识资源中心(Arid): 基于竖管降膜的多效太阳能苦咸水蒸馏器设计及性能分析

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	基于竖管降膜的多效太阳能苦咸水蒸馏器设计及性能分析
其他题名	Design and performance analysis of multi-effect solar brackish water distillation devices based on vertical tube falling film
	常泽辉; 朱国鹏; 李瑞晨; 侯静; 李建业
来源期刊	农业工程学报
ISSN	1002-6819
出版年	2020
卷号	36 期号:11 页码:218-224
中文摘要	工业化太阳能苦咸水淡化系统对基础设施要求高,无法满足当前缺水地区小型分布式淡水制备的需求。针对上述问题,该研究提出一种新型基于竖管降膜的多效太阳能苦咸水蒸馏器,其具有液膜蒸发、多效运行、传热热阻小、热能利用效率高等特点。基于封闭小空间内蒸发冷凝机理,分析装置内水蒸气传热传质过程,基于此, 分别测试定输入功率运行工况下,一效、二效、三效和四效蒸馏器的产水速率、蒸发温度和冷凝温度的变化规律,研究不同效数对装置单位能耗产水率l和性能系数 (Gain Output Ratio,GOR)等的影响,分析多效太阳能苦咸水蒸馏器的投资回收周期等经济评估参数。结果表明,装置单位能耗产水率、产水速率和性能系数均随运行效数的增加而增大,当输入电功率为200 W时,四效苦咸水蒸馏器达到稳态运行时单位能耗产水率和产水速率分别为1.45 g/kJ、1.039 kg/h,分别比三效蒸馏器增加36.80%、35.88%,四效苦咸水蒸馏器运行温度为83.76℃,蒸发冷凝总温差为19.07 ℃,性能系数达到3.36,投资成本回收周期约为5.69 a,具有较好的分布式制水应用前景。
英文摘要	Freshwater and energy are indispensable resources for human survival and social developments.However,fresh water scarcity is expanding and intensifying around the world because of rapid population growth,industry development,abnormal climate and urbanization.Especially,the shortage of useful water has become more obviously for isolated or arid regions.Great amount of groundwater in these regions found in wells usually remains brackish water.To obtain safe and pure drinking water,various brackish water distillation technologies have been increasingly recommended as a viable alternative.However,conventional distillation processes have indicated highly energy consumption,and potential environmental impacts due to the utilization of fossil fuels.It is necessary to utilize solar energy for the brackish water distillation,in order to meet the high requirement of potable water and agriculture in the remote and arid regions blessed with ample amount of solar energy.This paper therefore designed a novel multi-effect solar brackish water distillation device based on vertical tube falling film,which allows testing of four operational modes,i.e.,single-effect,double-effect,triple-effect and four-effect.Compared with conventional solar brackish water distillation device,some advantages can be achieved,such as falling film evaporation,multi-effect operation,smaller thermal resistance,and higher efficiency of thermal utilization.The working principle was introduced for the four-effect device and structure.A theoretical analysis of heat and mass transfer process of the device was carried out.The water yield,evaporation temperature and condensation temperature of the device for four operation modes were tested under the fixed heating power operation.The effects of the different operation effects on the water yield per energy and GOR(Gain Output Ratio)were investigated,together with the economic analysis of the multi-effect devices.The results demonstrated that when the heating power was 200W,the water yield per energy and the total water production of the four-effect device were 1.45 g/kJ and 1.039 kg/h,indicating an increase by 36.80% and 35.88% than that of the triple-effect device,respectively.The steady-state operation temperature was 83.76 ℃,while the total temperature difference of evaporation and condensation was 19.07 oC in the four-effect device.The GOR of four-effect device can reach 3.36.The payback period of four-effect device was 5.69 years.Performance and economic analyses of the devices indicated a wide applicability of the system,especially for remote and arid regions.
中文关键词	太阳能 ; 蒸馏 ; 苦咸水 ; 竖管 ; 多效
英文关键词	solar energy distillation brackish water vertical tube multi-effect
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Energy & Fuels
CSCD记录号	CSCD:6784231
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353677
作者单位	常泽辉, 内蒙古工业大学能源与动力工程学院;;内蒙古工业大学太阳能应用技术工程中心, ;;, 呼和浩特;;呼和浩特, ;; 010051;;010051. 朱国鹏, 内蒙古工业大学能源与动力工程学院, 呼和浩特, 内蒙古 010051, 中国. 李瑞晨, 内蒙古工业大学能源与动力工程学院, 呼和浩特, 内蒙古 010051, 中国. 李建业, 内蒙古工业大学能源与动力工程学院, 呼和浩特, 内蒙古 010051, 中国. 侯静, 内蒙古建筑职业技术学院建筑设备与自动化工程学院, 呼和浩特, 内蒙古 010070, 中国.
推荐引用方式 GB/T 7714	常泽辉,朱国鹏,李瑞晨,等. 基于竖管降膜的多效太阳能苦咸水蒸馏器设计及性能分析[J],2020,36(11):218-224.
APA	常泽辉,朱国鹏,李瑞晨,侯静,&李建业.(2020).基于竖管降膜的多效太阳能苦咸水蒸馏器设计及性能分析.农业工程学报,36(11),218-224.
MLA	常泽辉,et al."基于竖管降膜的多效太阳能苦咸水蒸馏器设计及性能分析".农业工程学报 36.11(2020):218-224.