Parametric Study on an Air-heated Desiccant Solution Regenerator
This paper investigated a desiccant solution regenerator using hot air to concentrate diluted desiccant solution, aiming to utilize the waste heat of the air, such as hot air exhausted by condensers of vapor compression refrigeration system. To develop the understanding of the coupled heat and mass transfer characteristic in the air-heated regenerator, parametric distributions of the desiccant solution and air in a typical ease was discussed. The results indicated that it was possible and feasible to use waste hot air for the regeneration of desiccant solution and the requirement of the lowest inlet solution temperature should be met for good regeneration performance. Parametric study indicated that the mass flow ratio of the air and desiccant solution (ASMR) had significant impact on the regeneration thermal efficiency of the air-heated regenerator. The regeneration thermal efficiency can achieve the maximum (ηreg. max) when the ASMR was around 6.5. Theηreg, max was determined hy the flow rate of the desiccant solution and it was found that lower flow rate of the desiccant could achieve higher ηreg,max. In addition, the Lewis number also had significant effect on the regeneration maximum thermal efficiency ηreg,max and the ηreg,max increased with the increase of the Lewis number.
Liquid desiccant Air heated regeneration Heat and mass transfer Packed tower
Yonggao Yin Xiaosong Zhang
School of Energy and Environment,Southeast University,Nanjing 210096,China
国际会议
The 6th International Symposium on Heating,Ventilating and Air Conditioning(第六届国际暖通空调学术会议)
南京
英文
756-765
2009-11-06（万方平台首次上网日期，不代表论文的发表时间）