Theoretical storage capacity for solar air pretreatment liquid collector/regenerator

Abstract A new liquid regeneration equipment—solar air pretreatment collector/regenerator for liquid desiccant cooling system is put forward in this paper, which is preferable to solution regeneration in hot and moist climate in South China. The equipment can achieve liquid regeneration in lower temperature. When the solution and the air are in “match” state in collector/regenerator, a match air to salt mass ratio ASMR ∗ is found by theoretical study in which there is the largest theoretical storage capacity SC max . At T r  = 60 °C and X in  = 2.33 kg/kg, theoretical calculation discovers when Y in drops from 29 to 14 g/kg, the SC max increase 50% compared with ASMR ∗ being around 26–27. After two new concepts of the effective solution proportion (EPS) and the effective storage capacity (ESC) are defined, it is found by theoretical calculation that when ESP drops from 100% to 67%, ESC raises lowly, not drops and liquid outlet concentration C str.sol increases from 40% to 49% in which its increment totals to 90%. All these data explain fully that air pretreatment liquid regeneration equipment enables to improve the performance of liquid desiccant cooling system.

[1]  K. Y. Qu,et al.  Heat and mass transfer model of cross flow liquid desiccant air dehumidifier/regenerator , 2007 .

[2]  D. Goswami,et al.  Study of an aqueous lithium chloride desiccant system: air dehumidification and desiccant regeneration , 2002 .

[3]  P. Gandhidasan.  Quick performance prediction of liquid desiccant regeneration in a packed bed , 2005 .

[4]  R. K. Collier,et al.  The analysis and simulation of an open cycle absorption refrigeration system , 1979 .

[5]  Terry G. Lenz,et al.  Performance studies for an experimental solar open-cycle liquid desiccant air dehumidification system , 1990 .

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

[7]  Farrington Daniels,et al.  Solar Energy Research , 1955 .

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

[9]  Wasim Saman,et al.  An experimental study of a forced flow solar collector/regenerator using liquid desiccant , 2002 .

[10]  Ru Yang,et al.  The optimum glazing height of a glazed solar collector/regenerator for open-cycle absorption cooling , 1994 .

[11]  G. Longo,et al.  Experimental and theoretical analysis of heat and mass transfer in a packed column dehumidifier/regenerator with liquid desiccant , 2005 .

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

[13]  Xiaosong Zhang,et al.  Experimental study on dehumidifier and regenerator of liquid desiccant cooling air conditioning system , 2007 .