亲水无纺布PVC复合规整填料除湿性能实验
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摘要
将亲水无纺布PVC复合规整填料作为溶液除湿塔芯体,开展亲水无纺布PVC复合规整填料除湿性能实验,分析在不同空气流量、溶液流量、溶液温度下,亲水无纺布PVC复合规整填料除湿率、除湿效率、传质系数和传热系数的变化。在实验条件下,除湿率、除湿效率、传质系数、传热系数最大值分别为11.05 g·kg~(-1)、86.7%、12.95 g·(m~2·s)~(-1)、10.33 W·(m~2·℃)~(-1);与CELdek规整填料和塑料波纹孔板填料相比,亲水无纺布PVC复合规整填料除湿性能最优。对实验数据回归分析,得到亲水无纺布PVC复合规整填料除湿效率实验关联式。
The hydrophilic non-woven PVC composite structured packing is used as the core of the solution dehumidification tower, and the dehumidification performance test of the hydrophilic non-woven PVC composite structured packing is carried out. The change of dehumidification rate, dehumidification efficiency, mass transfer coefficient and heat transfer coefficient of hydrophilic non-woven PVC composite structured packing under different air flow, liquid flow and liquid temperature were analyzed. Under experimental conditions, the maximum values of the dehumidification rate, dehumidification efficiency, mass transfer coefficient, and heat transfer coefficient are 11.05 g·kg~(-1), 86.7%, 12.95 g·(m~2·s)~(-1), 10.33 W·(m~2·℃)~(-1), respectively. Compared with the CELdek structured packing and plastic corrugated-hole plate packing, the hydrophile non-woven PVC composite structured packing has the best dehumidifying performance. The experimental data were regressed to obtain a dehumidification efficiency correlation formula of a hydrophilic non-woven PVC composite structured packing.
The hydrophilic non-woven PVC composite structured packing is used as the core of the solution dehumidification tower, and the dehumidification performance test of the hydrophilic non-woven PVC composite structured packing is carried out. The change of dehumidification rate, dehumidification efficiency, mass transfer coefficient and heat transfer coefficient of hydrophilic non-woven PVC composite structured packing under different air flow, liquid flow and liquid temperature were analyzed. Under experimental conditions, the maximum values of the dehumidification rate, dehumidification efficiency, mass transfer coefficient, and heat transfer coefficient are 11.05 g·kg~(-1), 86.7%, 12.95 g·(m~2·s)~(-1), 10.33 W·(m~2·℃)~(-1), respectively. Compared with the CELdek structured packing and plastic corrugated-hole plate packing, the hydrophile non-woven PVC composite structured packing has the best dehumidifying performance. The experimental data were regressed to obtain a dehumidification efficiency correlation formula of a hydrophilic non-woven PVC composite structured packing.
引文
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[27]Li Z,Hihara E,Matsuoka F,et al.Experimental analysis of mass transfer in adiabatic structured packing dehumidifier/regenerator with liquid desiccant[J].International Journal of Heat&Mass Transfer,2010,53(13):2856-2863.
[28]戴智超,殷勇高,张小松.波纹填料叉流除湿性能实验研究[J].建筑科学,2014,30(12):102-105.Dai Z C,Yin Y G,Zhang X S.Experimental research on the performance of cross-flow dehumidification of corrugated packing[J].Building Science,2014,30(12):102-105.
[29]陈瑶.基于非常温溶液除湿的新型复合型空调系统研究[D].南京:东南大学,2016.Chen Y.Analysis of a new hybrid air-condition system dehumidified by liquid desiccant with special temperature range[D].Nanjing:Southeast University,2016.
[30]Liu X H,Zhang Y,Qu K Y,et al.Experimental study on mass transfer performances of cross flow dehumidifier using liquid desiccant[J].Energy Conversion&Management,2006,47(15/16):2682-2692.
[2]Lazzarin R M,Castellotti F.A new heat pump desiccant dehumidifier for supermarket application[J].Energy&Buildings,2007,39(1):59-65.
[3]Fu H X,Liu X H.Review of the impact of liquid desiccant dehumidification on indoor air quality[J].Building&Environment,2017,116:158-172.
[4]Park J Y,Yoon D S,Li S,et al.Empirical analysis of indoor air quality enhancement potential in a liquid-desiccant assisted air conditioning system[J].Building&Environment,2017,121:11-25.
[5]黄志甲,鲁月红,雷博,等.溴化锂溶液除湿器的实验研究[J].化工学报,2010,61(S2):81-85.Huang Z J,Lu Y H,Lei B,et al.Experiment on performance of LiBr-liquid desiccant dehumidification[J].CIESC Journal,2010,61(S2):81-85.
[6]Dong C,Lu L,Wen T,et al.Experimental study on dehumidification performance enhancement by TiO2superhydrophilic coating for liquid desiccant plate dehumidifiers[J].Building&Environment,2017,124:219-231.
[7]钱俊飞,殷勇高,潘雄伟,等.平板降膜溶液除湿再生过程实验研究及模型验证[J].化工学报,2014,65(6):2070-2077.Qian J F,Yin Y G,Pan X W,et al.Experimental investigation and model validation for liquid desiccant dehumidification and regeneration in falling-film plate[J].CIESC Journal,2014,65(6):2070-2077.
[8]李群生,马文涛,张泽廷.塔填料的研究现状及发展趋势[J].化工进展,2005,24(6):619-624.Li Q S,Ma W T,Zhang Z T.Research and development trend of column packing[J].Chemical Industry and Engineering Progress,2005,24(6):619-624.
[9]贾绍义,吴松海,李杰,等.聚丙烯填料表面处理对润湿及传质性能的影响[J].化工学报,2000,51(6):832-835.Jia S Y,Wu S H,Li J,et al.Influence of surface treatment of polypropylene packing on its wettability and mass transfer performance[J].Journal of Chemical Industry and Engineering(China),2000,51(6):832-835.
[10]贾绍义,李锡源,王恩祥.金属填料表面处理对润湿及传质性能的影响[J].化工学报,1995,51(1):112-116.Jia S Y,Li X Y,Wang E X.Influence of surface treatment of metallic packing on its wettability and mass transfer performance[J].Journal of Chemical Industry and Engineering(China),1995,51(1):112-116.
[11]Li K,Shen K,Huang Z H,et al.Wettability of natural microcrystalline graphite filler with pitch in isotropic graphite preparation[J].Fuel,2016,180:743-748.
[12]Yang J,Huang J,Ye Z,et al.Influence of interfacial reaction on reactive wettability of molten Ag-Cu-X?wt.%Ti filler metal on SiCceramic substrate and mechanism analysis[J].Applied Surface Science,2018,436:768-778.
[13]Chen H Y,Wang X C,Fu L,et al.Effects of surface microstructure on the active element content and wetting behavior of brazing filler metal during brazing Ti3SiC2ceramic and Cu[J].Vacuum,2018,156:256-263.
[14]Dong C,Lu L,Wen T,et al.Experimental study on dehumidification performance enhancement by TiO2superhydrophilic coating for liquid desiccant plate dehumidifiers[J].Building&Environment,2017,124:219-231.
[15]Qi R,Hu Y,Wang Y,et al.A new approach to enhance the heat and mass transfer of liquid desiccant dehumidification with a titanium dioxide superhydrophilic self-cleaning coating[J].Journal of Cleaner Production,2016,112:3555-3561.
[16]Li Z,Hihara E,Matsuoka F,et al.Experimental analysis of mass transfer in adiabatic structured packing dehumidifier/regenerator with liquid desiccant[J].International Journal of Heat&Mass Transfer,2010,53(13):2856-2863.
[17]Wang L,Xiao F,Zhang X,et al.An experimental study on the dehumidification performance of a counter flow liquid desiccant dehumidifier[J].International Journal of Refrigeration,2016,70:289-301.
[18]张欢,李春茹,李博佳.金属填料型吸收式除湿器的除湿性能研究[J].暖通空调,2009,39(9):46-50.Zhang H,Li C R,Li B J.Research of dehumidification performance of a metal filler absorbing-type dehumidifier[J].Heating Ventilating&Air Conditioning,2009,39(9):46-50.
[19]Fu X,Ge G,Niu X.Control performance of a dedicated outdoor air system adopting liquid desiccant dehumidification[J].Applied Energy,2011,88(1):143-149.
[20]Yin Y,Zhang X.A new method for determining coupled heat and mass transfer coefficients between air and liquid desiccant[J].International Journal of Heat&Mass Transfer,2008,51(13):3287-3297.
[21]Elsarrag E,Magzoub E E M,Jain S.Mass-transfer correlations for dehumidification of air by triethylene glycol in a structured packed column[J].Industrial&Engineering Chemistry Research,2004,43(23):7676-7681.
[22]王凌士,肖赋,陆韬.高效填料型除湿器新传质关联式实验研究[J].制冷学报,2017,38(6):1-6.Wang L S,Xiao F,Lu T.New experimental correlations for the mass transfer of a high-efficiency packed-type dehumidifier[J].Journal of Refrigeration,2017,38(6):1-6.
[23]Chung T W.Predictions of moisture removal efficiencies for packed-bed dehumidification systems[J].Gas Separation&Purification,1994,8(4):265-268.
[24]Tsair W C,Chung L M.Vapor pressures of the aqueous desiccants[J].Journal of Chemical&Engineering Data,1999,44(5):1024-1027.
[25]Zurigat Y H,Abu-Arabi M K,Abdul-Wahab S A.Dehumidification by triethylene glycol desiccant in a packed column[J].Energy Conversion&Management,2004,45(1):141-155.
[26]Yin Y G,Zhang X S.A new method for determining coupled heat and mass transfer coefficients between air and liquid desiccant[J].International Journal of Heat&Mass Transfer,2008,51(13):3287-3297.
[27]Li Z,Hihara E,Matsuoka F,et al.Experimental analysis of mass transfer in adiabatic structured packing dehumidifier/regenerator with liquid desiccant[J].International Journal of Heat&Mass Transfer,2010,53(13):2856-2863.
[28]戴智超,殷勇高,张小松.波纹填料叉流除湿性能实验研究[J].建筑科学,2014,30(12):102-105.Dai Z C,Yin Y G,Zhang X S.Experimental research on the performance of cross-flow dehumidification of corrugated packing[J].Building Science,2014,30(12):102-105.
[29]陈瑶.基于非常温溶液除湿的新型复合型空调系统研究[D].南京:东南大学,2016.Chen Y.Analysis of a new hybrid air-condition system dehumidified by liquid desiccant with special temperature range[D].Nanjing:Southeast University,2016.
[30]Liu X H,Zhang Y,Qu K Y,et al.Experimental study on mass transfer performances of cross flow dehumidifier using liquid desiccant[J].Energy Conversion&Management,2006,47(15/16):2682-2692.