Modeling and simulation of solar collector/regenerator for liquid desiccant cooling systems

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• 作者：Donggen Peng^a ; ^{pdg751110@163.com"" rel=""nofollow} ; Xiaosong Zhang^b
• 关键词：Solar energy ; Solution regeneration ; Total temperature difference ; Heat loss
• 刊名：Energy
• 出版年：2011
• 出版时间：May 2011
• 年：2011
• 卷：36
• 期：5
• 页码：2543-2550
• 全文大小：959 K

文摘

Solar liquid collector/regenerator combines solar photothermic transformation and liquid regeneration together for solar energy-driven liquid desiccant cooling systems. A group of dimensionless heat and mass transfer equations describing the heat and mass transfer process in the solar C/R(Collector/Regenerator) were obtained by introducing total temperature difference (ΔT₀) and dimensionless heat loss coefficient . The increment of solution concentration ΔC was increased 2.9–3.5 % /°C and 5.3 % /°C for increasing unit inlet temperature of air stream and solution respectively and increased about 6.2 % /(g/kg) and 0.9 % /(g/kg) for decreasing unit inlet humidity ratio of air and solution concentration. Besides, the increasing number of heat transfer units (NTU), air-to-salt mass flow rate ratio (ASMR) and total temperature difference (ΔT₀) can increase the performance of solution regeneration significantly. Compared to parallel flow regeneration, the performance of counterflow regeneration was increased about 10 % .