上海地区太阳能溶液除湿新风系统的TRNSYS模拟研究
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摘要
以上海徐汇某别墅空调系统为例,利用TRNSYS软件对太阳能溶液除湿新风系统的运行情况进行数值模拟,以验证该系统夏季供冷工况下运行的稳定性和可靠性。主要模拟太阳能溶液除湿新风系统运行过程中新风经过各级除湿塔后含湿量的变化、除湿溶液经各级除湿塔后浓度的变化以及除湿溶液再生前后浓度的变化。结果表明:一、二级除湿塔的除湿效率较高,三、四级除湿塔的除湿效率相对较低;使用者可根据室外含湿量具体情况选择除湿塔运行级数,而四级除湿塔的联合运行能保证全夏季空调期内送风含湿量均低于设计送风含湿量11.22 g/kg;除湿溶液经四级除湿后的平均浓度保持在34%~35%之间,仍保留有一定的除湿能力;夏季空调期内溶液再生前后浓度差的平均值为6.48%,溶液再生效率高,能为除湿环节提供稳定的除湿浓溶液。太阳能溶液除湿新风系统运行稳定,能满足不同室内外气象参数条件下系统送风参数的要求。
Numerical simulation on the operating condition of solar liquid desiccant fresh air system has beeninvestigated on the case of air- conditioning system in Shanghai Xuhui by TRNSYS software,which was to verify theoperating stability and reliability of the system under summer cooling condition. Changes of fresh air moisture content andliquid desiccant concentration after pass through all levels dehumidifying tower,and change of liquid desiccantconcentration before and after regeneration were simulated in the solar liquid desiccant fresh air system. The resultsshowed that compared with the third and fourth stage dehumidification tower,the dehumidifying efficiency of first andsecond stage dehumidification tower is higher;users can choose to run the dehumidification tower series according to theoutdoor humidity,the joint operation of fourth stage dehumidification tower can ensure the air moisture content werelower than the design air moisture content 11.22 g/kg during the summer air conditioning period;the averageconcentration of desiccant solution after four levels of desiccant is maintained between 34% to 35%,still retain a certaindehumidifying capacity;The average concentration difference of the solution regenerations 6.48% during the summer airconditioning period,and the solution has high regeneration efficiency,which can provide a stable solution for thedesiccant,the solar liquid desiccant fresh air system is stable and can meet the air supply requirements under differentindoor and outdoor meteorological parameters.
Numerical simulation on the operating condition of solar liquid desiccant fresh air system has beeninvestigated on the case of air- conditioning system in Shanghai Xuhui by TRNSYS software,which was to verify theoperating stability and reliability of the system under summer cooling condition. Changes of fresh air moisture content andliquid desiccant concentration after pass through all levels dehumidifying tower,and change of liquid desiccantconcentration before and after regeneration were simulated in the solar liquid desiccant fresh air system. The resultsshowed that compared with the third and fourth stage dehumidification tower,the dehumidifying efficiency of first andsecond stage dehumidification tower is higher;users can choose to run the dehumidification tower series according to theoutdoor humidity,the joint operation of fourth stage dehumidification tower can ensure the air moisture content werelower than the design air moisture content 11.22 g/kg during the summer air conditioning period;the averageconcentration of desiccant solution after four levels of desiccant is maintained between 34% to 35%,still retain a certaindehumidifying capacity;The average concentration difference of the solution regenerations 6.48% during the summer airconditioning period,and the solution has high regeneration efficiency,which can provide a stable solution for thedesiccant,the solar liquid desiccant fresh air system is stable and can meet the air supply requirements under differentindoor and outdoor meteorological parameters.
引文
[1]李帅.太阳能溶液除湿空调系统基础研究[D].合肥:合肥工业大学,2012.[1]Li Shuai.Solar liquid desiccant air conditioning system basic research[D].Hefei:Hefei University of Technology,2012.
[2]王顺林,裴清清.夏热冬暖地区太阳能溶液除湿空调的应用分析[J].建筑热能通风空调,2007,(4):17—20.[2]Wang Shunlin,Pei Qingqing.Analysis on application of solar liquid desiccant air conditioning in hot summer and warm winter zone[J].Building Energy&Environment,2007,(4):17—10.
[3]魏志刚,李德英,胡文举,等.太阳能除湿溶液再生方式及装置的分析与研究[J].区域供热,2014,(3):16—19.[3]Wei Zhigang,Li Deying,Hu Wenju,et al.Analysis and research on the regeneration mode and device of solar desiccant solution[J].District Heating,2014,(3):16—19.
[4]方承超,孙克涛.太阳能液体除湿空调系统模型的建立与分析[J].太阳能学报,1997,18(2):128—133.[4]Fang Chengchao,Sun Ketao.Establishment and analysis model of solar power liquid desiccant air conditioning[J].Acta Energiae Solaris Sinica,1997,18(2):128—133.
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[6]Lof G O G.Cooling with solar energy[A].Congress onSolar Energy[C],Tuscon,Ariz,1955.
[7]代彦军,王如竹,许煜雄,等.太阳能液体干燥剂除湿潜能储存热质传递过程研究[J].工程热物理学报,2001,22(5):605—608.[7]Dai Yan Jun,Wang Ruzhu,Xu Yuxiong,et al.Heat and mass transfer investigation on the storage of dehumidification potential of liquid desiccant[J].Journal of Engineering Thermophysics,2001,22(5):605—608.
[8]彭冬根,张小松,殷勇高.一种新型溶液再生装置理论性能研究——太阳能空气预处理溶液集热/再生装置[J].太阳能学报,2008,29(9):1078—1085.[8]Peng Donggen,Zhang Xiaosong,Yin Yonggao.The study on theoretical performance of a sort of new type liquid regeneration equipment[J].Acta Energiae Solaris Sinica,2008,29(9):1078—1085.
[9]赵竹.太阳能除湿系统在建筑中的应用[J].建筑热能通风空调,2009,28(3):33—36,23.[9]Zhao Zhu.The application of solar desiccant system in building[J].Building Energy&Environment,2009,28(3):33—36,23.
[10]Katejanekarn T,Chirarattananon S,Kumar S,An experimental study of a solar-regenerated liquid desiccant ventilation pre-conditioning system[J].Solar Energy,2009,83(6):920—933.
[11]孟召贤,余跃进,周蓓.地源热泵和毛细管网辐射系统在别墅中联合应用的探讨[J].制冷与空调(四川),2009,23(5):102—104.[11]Meng Zhaoxian,Yu Yuejin,Zhou Pei.Ground-source heat pump and the capilany network of radiation system in the villa of a joint application[J].Refrigeration&Air Condition(Sichuan),2009,23(5):102—104.
[12]茅江曼.基于溶液除湿的温湿度独立控制空调系统研究[D].南京:南京理工大学,2010.[12]Mao Jiangman.Study of temperature and humidity independent control air-conditioning system based on liquid desiccant[D].Nanjing:Nanjing University of Science and Technology,2010.
[2]王顺林,裴清清.夏热冬暖地区太阳能溶液除湿空调的应用分析[J].建筑热能通风空调,2007,(4):17—20.[2]Wang Shunlin,Pei Qingqing.Analysis on application of solar liquid desiccant air conditioning in hot summer and warm winter zone[J].Building Energy&Environment,2007,(4):17—10.
[3]魏志刚,李德英,胡文举,等.太阳能除湿溶液再生方式及装置的分析与研究[J].区域供热,2014,(3):16—19.[3]Wei Zhigang,Li Deying,Hu Wenju,et al.Analysis and research on the regeneration mode and device of solar desiccant solution[J].District Heating,2014,(3):16—19.
[4]方承超,孙克涛.太阳能液体除湿空调系统模型的建立与分析[J].太阳能学报,1997,18(2):128—133.[4]Fang Chengchao,Sun Ketao.Establishment and analysis model of solar power liquid desiccant air conditioning[J].Acta Energiae Solaris Sinica,1997,18(2):128—133.
[5]尚鑫.冷凝热预热再生空气的太阳能除湿空调系统的设计研究[D].济南:山东建筑大学,2013.[5]Shang Xin.Study on solar assisted desiccant airconditioning system with condensation heat preheating the regeneration air[D].Ji’nan:Shandong Jianzhu University,2013.
[6]Lof G O G.Cooling with solar energy[A].Congress onSolar Energy[C],Tuscon,Ariz,1955.
[7]代彦军,王如竹,许煜雄,等.太阳能液体干燥剂除湿潜能储存热质传递过程研究[J].工程热物理学报,2001,22(5):605—608.[7]Dai Yan Jun,Wang Ruzhu,Xu Yuxiong,et al.Heat and mass transfer investigation on the storage of dehumidification potential of liquid desiccant[J].Journal of Engineering Thermophysics,2001,22(5):605—608.
[8]彭冬根,张小松,殷勇高.一种新型溶液再生装置理论性能研究——太阳能空气预处理溶液集热/再生装置[J].太阳能学报,2008,29(9):1078—1085.[8]Peng Donggen,Zhang Xiaosong,Yin Yonggao.The study on theoretical performance of a sort of new type liquid regeneration equipment[J].Acta Energiae Solaris Sinica,2008,29(9):1078—1085.
[9]赵竹.太阳能除湿系统在建筑中的应用[J].建筑热能通风空调,2009,28(3):33—36,23.[9]Zhao Zhu.The application of solar desiccant system in building[J].Building Energy&Environment,2009,28(3):33—36,23.
[10]Katejanekarn T,Chirarattananon S,Kumar S,An experimental study of a solar-regenerated liquid desiccant ventilation pre-conditioning system[J].Solar Energy,2009,83(6):920—933.
[11]孟召贤,余跃进,周蓓.地源热泵和毛细管网辐射系统在别墅中联合应用的探讨[J].制冷与空调(四川),2009,23(5):102—104.[11]Meng Zhaoxian,Yu Yuejin,Zhou Pei.Ground-source heat pump and the capilany network of radiation system in the villa of a joint application[J].Refrigeration&Air Condition(Sichuan),2009,23(5):102—104.
[12]茅江曼.基于溶液除湿的温湿度独立控制空调系统研究[D].南京:南京理工大学,2010.[12]Mao Jiangman.Study of temperature and humidity independent control air-conditioning system based on liquid desiccant[D].Nanjing:Nanjing University of Science and Technology,2010.