双热质耦合加湿除湿海水淡化性能试验分析
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摘要
基于加湿除湿海水淡化技术,采用直接接触式除湿方法,设计了双热质耦合加湿除湿海水淡化装置。构建了相关的试验系统,并对海水淡化装置的热力性能进行了试验测试,获得了双热质耦合加湿除湿海水淡化系统设计工况点下的热力性能,并对海水流量、空气流量和气体分布器与海水淡化系统性能的依变规律进行了研究。测试结果表明:在双热质耦合加湿除湿海水淡化系统设计工况下,装置造水量和单位体积造水量分别达到5.3 kg·h~(-1)和16.56 kg·m~(-3)·h~(-1);产水量随着海水流量增加先增加12.5%后减小20.6%;减小空气流量装置的造水量减小了9.7%;加湿器引入气体分布器,装置的产水量增加11.3%。
A dual heat and mass transfer coupled humidification dehumidification(HDH) desalination device by direct contact dehumidification method was designed based on the humidification dehumidification desalination technology. The thermal performance of dual heat and mass transfer coupled HDH desalination system under the design conditions was obtained by experiment. The effect of seawater flow rate, air flow rate and gas distributor on the performance of the HDH desalination system were also experimentally studied in this paper. The experimental results indicate that under the design conditions of dual heat and mass transfer coupled HDH desalination system, the total water yield of the HDH desalination unit and the water yield per unit volume of the device can reach 5.3 kg·h~(-1) and 16.56 kg·m~(-3)·h~(-1). The water yield of the desalination unit increases by 12.5% first and then decreases by 20.6%, with increasing the seawater mass flow rate. Reducing the air mass flow rate, the water yield of the unit decreases by 9.7%. The water yield of the unit increases by 11.3% due to the application of the gas distributor in the humidifier.
A dual heat and mass transfer coupled humidification dehumidification(HDH) desalination device by direct contact dehumidification method was designed based on the humidification dehumidification desalination technology. The thermal performance of dual heat and mass transfer coupled HDH desalination system under the design conditions was obtained by experiment. The effect of seawater flow rate, air flow rate and gas distributor on the performance of the HDH desalination system were also experimentally studied in this paper. The experimental results indicate that under the design conditions of dual heat and mass transfer coupled HDH desalination system, the total water yield of the HDH desalination unit and the water yield per unit volume of the device can reach 5.3 kg·h~(-1) and 16.56 kg·m~(-3)·h~(-1). The water yield of the desalination unit increases by 12.5% first and then decreases by 20.6%, with increasing the seawater mass flow rate. Reducing the air mass flow rate, the water yield of the unit decreases by 9.7%. The water yield of the unit increases by 11.3% due to the application of the gas distributor in the humidifier.
引文
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[24]Yuan G,Wang Z,Li H,et al.Experimental study of a solar desalination system based on humidification-dehumidification process[J].Desalination,2011,277(1):92-98.
[25]Mehrgoo M,Amidpour M.Derivation of optimal geometry of a multi-effect humidification–dehumidification desalination unit:A constructal design[J].Desalination,2011,281(1):234-242.
[2]He W F,Ji C,Han D,et al.Performance Analysis of the Mechanical Vapor Compression Desalination System Driven by an Organic Rankine Cycle[J].Energy,2017(141):1177-1186.
[3]Han D,He W F,Yue C,et al.Study on desalination of zero-emission system based on mechanical vapor compression[J].Applied Energy,2017(185):1490-1496.
[4]Han D,He W F,Ji C.Thermodynamic analysis of a novel evaporation and crystallization system based on humidification processes at ambient temperature[J].Desalination,2018(439):108-118.
[5]Yue C,Wang B,Zhu B.Thermal analysis for the evaporation concentrating process with high boiling point elevation based exhaust waste heat recovery[J].Desalination,2018(436):39-47.
[6]He W F,Han D,Ji C.Investigation on humidification dehumidification desalination system coupled with heat pump[J].Desalination,2018(436):152-160.
[7]Ahmed H A,Ismail I M,Saleh W F,et al.Experimental investigation of humidification-dehumidification desalination system with corrugated packing in the humidifier[J].Desalination,2017(410):19-29.
[8]张旭朋,左然,丁刚,等.一种新型太阳能海水淡化系统的实验研究[J].节能技术,2010,28(1):51-55.
[9]袁怡刚,董勇,赖艳华,等.多级增湿太阳能海水淡化的实验研究[J].节能技术,2012,30(1):20-23.
[10]伍纲,郑宏飞,康慧芳,等.串列加热式增湿除湿海水淡化系统的试验研究[J].工程热物理学报,2016,37(10):2057-2062.
[11]原郭丰,赵子竞,Jakob Berg Johanson,等.雾化加湿除湿海水淡化中蒸发过程试验研究[J].太阳能学报,2016,37(12):3214-3218.
[12]张立琋,贺锋,朱春伟.光伏驱动的鼓泡加湿-热泵海水淡化装置研究[J].太阳能学报,2016,37(5):1346-1351.
[13]Hashemifard S A,Azin R.New experimental aspects of the carrier gas process(CGP)[J].Desalination,2004,164(2):125-133.
[14]Eslamimanesh A,Hatamipour M S.Mathematical modeling of a direct contact humidification-dehumidification desalination process[J].Desalination,2009,237(1):296-304.
[15]Mehrgoo M,Amidpour M.Constructal design and optimization of a direct contact humidification-dehumidification desalination unit[J].Desalination,2012,293(3):69-77.
[16]He W F,Huang L,Xia J R,et al.Parametric analysis of a humidification dehumidification desalination system using a direct-contact dehumidifier[J].International Journal of Thermal Sciences,2017(120):31-40.
[17]He W F,Han D,Zhu W P,et al.Thermo-economic analysis of a water-heated humidification-dehumidification desalination system with waste heat recovery[J].Energy Conversion & Management,2018(160):182-190.
[18]He W F,X K Zhang.Performance analysis of a water-power combined system with air-heated humidification dehumidification process[J].Energy,2017(130):218-227.
[19]He W F,Wu F.Cost analysis of a humidification dehumidification desalination system with a packed bed dehumidifier[J].Energy Conversion & Management,2018(171):452-460.
[20]He W F,Xu L N,Han D.Parametric analysis of an air-heated humidification-dehumidification (HDH) desalination system with waste heat recovery[J].Desalination,2016(398):30-38.
[21]He W F,Han D,Yue C,et al.A parametric study of a humidification dehumidification (HDH) desalination system using low grade heat sources[J].Energy Conversion & Management,2015(105):929-937.
[22]Sharqawy M H,Lienhard J H,Zubair S M.Thermophysical properties of seawater:a review of existing correlations and data[J].Desalination and Water Treatment,2010,16(1-3):354-380.
[23]伍纲,郑宏飞,康慧芳.串列加热式增湿除湿海水淡化系统的实验研究[J].工程热物理学报,2016,37(10):2057-2062.
[24]Yuan G,Wang Z,Li H,et al.Experimental study of a solar desalination system based on humidification-dehumidification process[J].Desalination,2011,277(1):92-98.
[25]Mehrgoo M,Amidpour M.Derivation of optimal geometry of a multi-effect humidification–dehumidification desalination unit:A constructal design[J].Desalination,2011,281(1):234-242.
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