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Effect of Temperature and Specific Humidity of the Air on Performance of Celdek Packed Liquid Desiccant Regenerator


Affiliations
1 Department of Mechanical Engineering, IET Bhaddal, Ropar, Punjab, India
2 Department of Mechanical Engineering, SBS STC Ferozepur, Punjab, India
 

Current paper presents experimental study of the effect of inlet process parameters of humid air on different output parameters of counter flow liquid desiccant regeneration system. Temperature and specific humidity are selected as inlet process parameters. Regenerator is the heart of liquid desiccant air cooling system. Celdek structured pads with packing density 390 m2/m3 as packing material and calcium chloride as liquid desiccant are used in the present research. Air and desiccant solution flow in counter flow direction with respect to each other. One parameter is varied at a time and others are kept constant. Different outlet parameters studied are outlet specific humidity, evaporation flow rate, outlet temperature of air, outlet temperature of solution and effectiveness of the regenerator. Variation of evaporation rate at average found is 51.86 % which is maximum increase among all output parameters. Decrease in solution output temperature obtained is 4.75 % with varying specific humidity of air.

Keywords

Desiccant, Air, Regenerator, Celdek Pads, Specific Humidity, Effectiveness, Evaporation Flow Rate, Temperature.
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  • Abdulghani, A.A., Gandhidasan, P. and Al-Mutairi, M.A. (2002) „Evaluation of heat and mass transfer coefficients in a gauze-type structured packing air dehumidifier operating with liquid desiccant‟, International Journal of Refrigeration, Vol. 25, pp. 330-339.

  • Abdul-Wahab, S.A., Zurigat, Y.H. and Arabi, A. (2004) „Predictions of moisture removal rate and dehumidification effectiveness for structured liquid desiccant air dehumidifier‟, Energy, Vol. 29, pp. 19-34.

  • Alosaimy, A.S. (2013) „Application of evaporative air coolers coupled with solar water heater for dehumidification of indoor air‟, International Journal of Mechanical & Mechatronics Engineering, Vol. 13, pp. 60-68.

  • Bakhtiar, A., Rokhman, F.C. and Kwang, H. (2012) „A novel method to evaluate the performance of liquid desiccant air dehumidifier system‟, Energy and Buildings, Vol. 44, pp. 39-44.

  • Bassuoni, M.M. (2011) „An experimental study of structured packing dehumidifier/regenerator operating with liquid desiccant‟, Energy, Vol. 36, pp. 2628-2638. DOI: 10.1016/J.Energy.2011.02.004.

  • Bouzenada, S., Salmon, T., Fraikin, L., Kaabi, A. and Leonard, A. (2014) „Experimental study on mass transfer comparison of two liquid desiccants aqueous solutions‟‟, Renewable Energy and Power Quality Journal, ISSN 2172-038X, No. 12.

  • Dow(2003), Calcium chloride handbook, Dow Chemical Company, Michigan, USA.

  • Elsarrag, E. (2006) „Performance Study on a Structured Packed Liquid Desiccant Regenerator‟, Solar Energy, Vol. 80, pp. 1624-1631.

  • Factor, H.M. and Grossman, G. (1980) „A Packed Bed Dehumidifier/Regenerator for Solar Air Conditioning with Liquid Desiccants‟, Solar Energy, Vol. 24, pp. 541-550.

  • Fumo, N. and Goswami, D.Y. (2002) „Study of an aqueous lithium chloride desiccant system: air dehumidification and desiccant regeneration‟, Solar Energy, Vol. 72, pp. 351-361.

  • Gandhidsan, P. (2005) „Quick performance predictions of liquid desiccant regeneration in a packed bed‟, Solar Energy, Vol. 79, pp. 47–55.

  • Ghadamian, H., Assadi, K.M. and Ataei, A. ( 2011) „An Experimental and modeling study of a dehumidification tower‟, International Journal of the Physical Sciences, Vol. 6, pp. 2852-2860.

  • Jain, S., Dhar, P.L. and Kaushik, S.C.(2000) „Experimental studies on dehumidifier and regenerator of a liquid desiccant cooling system‟, Applied Thermal Engineering, Vol. 20, pp. 253-67.

  • Kline, S.J. and McClintock, F.A. (1953) „Describing uncertainties in single sample experiments‟, Mechanical Engineering. Vol. 75, pp. 3-8.

  • Liu, X.H., Zhang, Y., Qu, K.Y. and Jiang, V. (2006) „Experimental study on mass transfer performances of cross flow dehumidifier using liquid desiccant‟, Energy Conversion and Management, Vol. 47, pp. 2682-2692.

  • Martin, V. and Goswami, D.Y. (2000) „Effectiveness of heat and mass transfer processes in a packed bed liquid desiccant dehumidifier/regenerator‟, HVAC&R Research, Vol. 6, pp. 21-39.

  • Moon, C.G., Bansal, P.K. and Jain, S. (2009) „New mass transfer performance data of a cross-flow liquid desiccant dehumidification system‟, International Journal of Refrigeration, Vol. 32, pp. 524-533.

  • Narayan, P.G., Chehayeb, K.M., Mcgovern, R.K., Thiel, G., Zubairyed, M., Lienhard V. and John, H. (2013) „Thermodynamic balancing of the humidification dehumidification desalination system by mass extraction and injection‟, International Journal of Heat and Mass Transfer, Vol. 57, pp. 756-770.

  • Oberg, V. and Goswami, D.Y. (1998) „Experimental study of heat and mass transfer in a packed bed liquid desiccant air dehumidifier‟, Journal of Solar Energy Engineering, Vol. 120, pp. 289-297.

  • Patnaik, S., Lenz, T.G. and Lof, G.O.G. (2000) „Performance studies for an experimental solar open-cycle liquid desiccant air dehumidification system‟, Solar Energy, Vol. 44, pp. 123-135.

  • Ritunesh, K., Dhar, P.L., Sanjeev, J. and Asati, A.K. „Multi absorber stand-alone liquid desiccant air-conditioning systems for higher performance‟, Solar Energy, Vol. 83, pp. 761-772.Salarian, H., 22. Sultan, G.I., Hamed, A.M. and Sultan, A.A. (2002) „The effect of inlet parameters on the performance of packed tower-regenerator‟, Renewable Energy, Vol. 26, pp. 271-283.

  • Stevens, D.I., Braun, J.E. and Klein, S.A. (2000) „An effectiveness model of liquid-desiccant system heat/mass exchangers‟, Solar Energy, Vol. 42, pp. 449-455.

  • Zhao, K., Liu, X.H., Zhang, T. and Jiang, Y. (2014) „Performance of temperature and humidity independent control air-conditioning system in an office building‟, Energy and Buildings, Vol. 43, pp. 1895-1903.

  • Zurigat, Y.H., Abu-Arabi, M.K. and Abdul-Wahab, S.A. (2004) „Air dehumidification by triethylene glycol desiccant in a packed column‟, Energy Conversion and Management, Vol. 45, pp. 141–155. doi:10.1016/S0196-8904(03)00109-2.

  • Kumar R. and Asati A K. (2016) “Experimental Study on Performance of Celdek Packed Liquid Desiccant Dehumidifier,” Heat and Mass Transfer, ISSN 0947-7411, Vol. 52, No. 9, pp 1821-1832, DOI:10.1007/s00231-015-1704-2.

  • Kumar R., Asati, A.K.(2017), “Study on the Performance of Celdek Packed Counter Flow Liquid Desiccant Regenerator,” Journal of Mechanical Science and Technology, ISSN 1738 494X, 31(9) 4489-4498, doi 10.1007/s12206-017-0849-y.


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  • Effect of Temperature and Specific Humidity of the Air on Performance of Celdek Packed Liquid Desiccant Regenerator

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Authors

Rakesh Kumar
Department of Mechanical Engineering, IET Bhaddal, Ropar, Punjab, India
Arun Kumar Asati
Department of Mechanical Engineering, SBS STC Ferozepur, Punjab, India

Abstract


Current paper presents experimental study of the effect of inlet process parameters of humid air on different output parameters of counter flow liquid desiccant regeneration system. Temperature and specific humidity are selected as inlet process parameters. Regenerator is the heart of liquid desiccant air cooling system. Celdek structured pads with packing density 390 m2/m3 as packing material and calcium chloride as liquid desiccant are used in the present research. Air and desiccant solution flow in counter flow direction with respect to each other. One parameter is varied at a time and others are kept constant. Different outlet parameters studied are outlet specific humidity, evaporation flow rate, outlet temperature of air, outlet temperature of solution and effectiveness of the regenerator. Variation of evaporation rate at average found is 51.86 % which is maximum increase among all output parameters. Decrease in solution output temperature obtained is 4.75 % with varying specific humidity of air.

Keywords


Desiccant, Air, Regenerator, Celdek Pads, Specific Humidity, Effectiveness, Evaporation Flow Rate, Temperature.

References