Exergy performance and thermodynamic properties of the ideal liquid desiccant dehumidification syste

In this paper, an ideal liquid desiccant dehumidification system is presented as the idealization of practical liquid desiccant dehumidification systems, along with an exergy analysis that considers the effects of various parameters like dehumidification temperature, water vapor pressure and temperature of surrounding environment on the system performance. Exergy formulations are developed and validated for the ideal system. These results show that the ideal system is strongly influenced by these impact factors, with respect to operating condition and exergy efficiency, and should be used with caution when comparing with condensation-based dehumidification systems.

[1]  Manuel R. Conde,et al.  Properties of aqueous solutions of lithium and calcium chlorides: formulations for use in air conditioning equipment design , 2004 .

[2]  Ruzhu Wang,et al.  Development of a novel two-stage liquid desiccant dehumidification system assisted by CaCl2 solution using exergy analysis method , 2010 .

[3]  C. K. Lee,et al.  Computer simulation of ground-coupled liquid desiccant air conditioner for sub-tropical regions , 2009 .

[4]  Abdulghani A. Al-Farayedhi,et al.  Simulation of a hybrid liquid desiccant based air-conditioning system , 1997 .

[5]  Xiaoqiang Zhai,et al.  Performance analysis on a hybrid air-conditioning system of a green building , 2006 .

[6]  Meng-Hui Li,et al.  Vapour pressures, densities, and viscosities of the aqueous solutions containing (triethylene glycol or propylene glycol) and (LiCl or LiBr) , 2009 .

[7]  Ibrahim Dincer,et al.  Exergy analysis of a thermal power plant with measured boiler and turbine losses , 2010 .

[8]  E Brian Smith.  Basic Chemical Thermodynamics , 1973 .

[9]  K. Y. Qu,et al.  Experimental study on mass transfer performances of cross flow dehumidifier using liquid desiccant , 2006 .

[10]  A. Bejan.  Advanced Engineering Thermodynamics , 1988 .

[11]  L. Mei,et al.  A technical review on use of liquid-desiccant dehumidification for air-conditioning application , 2008 .

[12]  J. Rodríguez,et al.  Vapour pressures, densities, and viscosities of the (water + lithium bromide + potassium acetate) system and (water + lithium bromide + sodium lactate) system , 2006 .

[13]  Gershon Grossman,et al.  Experimental investigation of a liquid desiccant system for solar cooling and dehumidification , 2007 .

[14]  Ruzhu Wang,et al.  Use of liquid desiccant cooling to improve the performance of vapor compression air conditioning , 2001 .

[15]  Borong Lin,et al.  Combined cogeneration and liquid-desiccant system applied in a demonstration building , 2004 .

[16]  Zhang Xiaosong,et al.  Research on ratio selection of a mixed liquid desiccant: Mixed LiCl– CaCl2 solution , 2008 .

[17]  Donggen Peng,et al.  Modeling and performance analysis of solar air pretreatment collector/regenerator using liquid desiccant , 2009 .

[18]  Adriana Angelotti,et al.  Exergy analysis of renewable energy-based climatisation systems for buildings: A critical view , 2009 .

[19]  Shahab Alizadeh,et al.  Performance of a solar liquid desiccant air conditioner : An experimental and theoretical approach , 2008 .

[20]  Y. Kaita,et al.  Thermodynamic properties of lithium bromide-water solutions at high temperatures. , 2001 .

[21]  S. C. Kaushik,et al.  Experimental studies on the dehumidifier and regenerator of a liquid desiccant cooling system , 2000 .

[22]  Majid Amidpour,et al.  Exergy analysis of multistage cascade low temperature refrigeration systems used in olefin plants , 2009 .

[23]  Kambiz Vafai,et al.  Comparative study between parallel and counter flow configurations between air and falling film desiccant in the presence of nanoparticle suspensions , 2003 .

[24]  Meng-Hui Li,et al.  Vapour pressures and densities of the mixed-solvent desiccants (glycols + water + salts) , 2009 .

[25]  H. F. Zhang,et al.  Numerical simulation and theoretical analysis of heat and mass transfer in a cross flow liquid desiccant air dehumidifier packed with honeycomb paper , 2004 .

[26]  D. Y. Goswami,et al.  Experimental Study of the Heat and Mass Transfer in a Packed Bed Liquid Desiccant Air Dehumidifier , 1998 .

[27]  S. P. Lohani,et al.  Comparison of energy and exergy analysis of fossil plant, ground and air source heat pump building heating system , 2010 .

[28]  Thosapon Katejanekarn,et al.  Performance of a solar-regenerated liquid desiccant ventilation pre-conditioning system , 2008 .

[29]  A. Ertas,et al.  Properties of a new liquid desiccant solution—Lithium chloride and calcium chloride mixture , 1992 .

[30]  Palanichamy Gandhidasan,et al.  Analysis of Heat and Mass Transfer Between a Desiccant-Air System in a Packed Tower , 1987 .

[31]  Kambiz Vafai,et al.  Analysis of heat and mass transfer between air and falling film in a cross flow configuration , 2004 .

[32]  Ruzhu Wang,et al.  Investigation on a two-stage solar liquid-desiccant (LiBr) dehumidification system assisted by CaCl2 solution , 2009 .