一种用于除湿溶液的新型太阳能耦合再生系统
|
摘要
为了提高太阳能溶液再生系统的运行可靠性,提出了一种用于溶液除湿空调系统的新型太阳能溶液耦合再生系统.分析了该系统的工作原理,建立了该系统的耗能模型,并与传统太阳能溶液热再生系统进行了对比研究.研究结果表明,在2种运行模式下,太阳能耦合再生系统与太阳能热再生系统相比具有较大的节能优势.在太阳能耦合再生系统运行模式下,太阳能集热/再生器出口处溶液浓度对太阳能耦合再生系统耗能的影响最大.在系统设计过程中,应将太阳能集热/再生器出口处溶液浓度设计得尽可能小.此外,太阳能集热/再生器的再生效率对太阳能耦合再生系统的耗能也有较大的影响.
A newsolar coupling regeneration system used in the desiccant air-conditioning system is proposed in order to improve the reliability of solar desiccant regeneration system. Analysis of the method of the newsystem was made and the energy model of the newsystem was developed. More- over,the performance of the newsystem was compared with the solar thermal regeneration system. The results showthat the solar coupling regeneration system is more energy efficient than the solar thermal regeneration system under both operational conditions. Under operational condition 1,the most influential factor of the solar coupling regeneration system is the concentration of desiccant at the exit of the solar collector / regenerator,and it should be maintained as lowas possible. Moreover, the regeneration efficiency of the solar collector / regenerator affects the regeneration performance of the solar coupling regeneration system greatly.
A newsolar coupling regeneration system used in the desiccant air-conditioning system is proposed in order to improve the reliability of solar desiccant regeneration system. Analysis of the method of the newsystem was made and the energy model of the newsystem was developed. More- over,the performance of the newsystem was compared with the solar thermal regeneration system. The results showthat the solar coupling regeneration system is more energy efficient than the solar thermal regeneration system under both operational conditions. Under operational condition 1,the most influential factor of the solar coupling regeneration system is the concentration of desiccant at the exit of the solar collector / regenerator,and it should be maintained as lowas possible. Moreover, the regeneration efficiency of the solar collector / regenerator affects the regeneration performance of the solar coupling regeneration system greatly.
引文
[1]Elsarrag E.Evaporation rate of a novel tilted solar liquid desiccant regeneration system[J].Solar Energy,2008,82(7):663-668.
[2]Liu X H,Jiang Y,Yi X Q.Effect of regeneration mode on the performance of liquid desiccant packed bed regenerator[J].Renewable Energy,2009,34(1):209-216.
[3]Yin Y G,Zhang X S,Chen Z Q.Experimental study on dehumidifier and regenerator of liquid desiccant cooling air conditioning system[J].Building and Environment,2007,42(7):2505-2511.
[4]Audah N,Ghaddar K,Ghali N.Optimized solar-powered liquid desiccant system to supply building fresh w ater and cooling needs[J].Applied Energy,2011,88(11):3726-3736.
[5]Aly A A,Zeidan E B,Hamed A M.Performance evaluation of open-cycle solar regenerator using artificial neural netw ork technique[J].Energy and Buildings,2011,43(2/3):454-457.
[6]Aly A A,Zeidan E B,Hamed A M.Solar-powered open absorption cycle modeling w ith tw o desiccant solutions[J].Energy Conversion and Management,2011,52(7):2768-2776.
[7]Strathmann H.Electrodialysis,a mature technology w ith a multitude of new applications[J].Desalination,2010,264(3):268-288.
[8]Lee H J,Sarfert F,Strathmann H,et al.Designing of an electrodialysis desalination plant[J].Desalination,2002,142(3):267-286.
[9]Tsiakis P,Papageorgiou L G.Optimal design of an electrodialysis brackish w ater desalination plant[J].Desalination,2005,173(2):173-186.
[10]Li X W,Zhang X S.Photovoltaic-electrodialysis regeneration method for liquid desiccant cooling system[J].Solar Energy,2009,83(12):2195-2204.
[11]Li X W,Zhang X S,Quan S.Single-stage and double-stage photovoltaic driven regeneration for liquid desiccant cooling system[J].Applied Energy,2011,88(12):4908-4917.
[12]Cheng Q,Zhang X S,Li X W.Double-stage photovoltaic/thermal ED regeneration for liquid desiccant cooling system[J].Energy and Buildings,2012,51:64-72.
[13]Yin Y G,Zhang X S.Comparative study on internally heated and adiabatic regenerators in liquid desiccant air conditioning system[J].Building and Environment,2010,45(8):1799-1807.
[14]Peng D G,Zhang X S.Modeling and performance analysis of solar air pretreatment collector/regenerator using liquid desiccant[J].Renewable Energy,2009,34(3):699-705.
[15]Kumar R,Rosen M A.A critical review of photovoltaic-thermal solar collectors for air heating[J].Applied Energy,2011,88(11):3603-3614.
[2]Liu X H,Jiang Y,Yi X Q.Effect of regeneration mode on the performance of liquid desiccant packed bed regenerator[J].Renewable Energy,2009,34(1):209-216.
[3]Yin Y G,Zhang X S,Chen Z Q.Experimental study on dehumidifier and regenerator of liquid desiccant cooling air conditioning system[J].Building and Environment,2007,42(7):2505-2511.
[4]Audah N,Ghaddar K,Ghali N.Optimized solar-powered liquid desiccant system to supply building fresh w ater and cooling needs[J].Applied Energy,2011,88(11):3726-3736.
[5]Aly A A,Zeidan E B,Hamed A M.Performance evaluation of open-cycle solar regenerator using artificial neural netw ork technique[J].Energy and Buildings,2011,43(2/3):454-457.
[6]Aly A A,Zeidan E B,Hamed A M.Solar-powered open absorption cycle modeling w ith tw o desiccant solutions[J].Energy Conversion and Management,2011,52(7):2768-2776.
[7]Strathmann H.Electrodialysis,a mature technology w ith a multitude of new applications[J].Desalination,2010,264(3):268-288.
[8]Lee H J,Sarfert F,Strathmann H,et al.Designing of an electrodialysis desalination plant[J].Desalination,2002,142(3):267-286.
[9]Tsiakis P,Papageorgiou L G.Optimal design of an electrodialysis brackish w ater desalination plant[J].Desalination,2005,173(2):173-186.
[10]Li X W,Zhang X S.Photovoltaic-electrodialysis regeneration method for liquid desiccant cooling system[J].Solar Energy,2009,83(12):2195-2204.
[11]Li X W,Zhang X S,Quan S.Single-stage and double-stage photovoltaic driven regeneration for liquid desiccant cooling system[J].Applied Energy,2011,88(12):4908-4917.
[12]Cheng Q,Zhang X S,Li X W.Double-stage photovoltaic/thermal ED regeneration for liquid desiccant cooling system[J].Energy and Buildings,2012,51:64-72.
[13]Yin Y G,Zhang X S.Comparative study on internally heated and adiabatic regenerators in liquid desiccant air conditioning system[J].Building and Environment,2010,45(8):1799-1807.
[14]Peng D G,Zhang X S.Modeling and performance analysis of solar air pretreatment collector/regenerator using liquid desiccant[J].Renewable Energy,2009,34(3):699-705.
[15]Kumar R,Rosen M A.A critical review of photovoltaic-thermal solar collectors for air heating[J].Applied Energy,2011,88(11):3603-3614.