科研之友
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摘要
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 (Delta T(0)) and dimensionless heat loss coefficient ((h) over bar (z)). The increment of solution concentration Delta C was increased 2.9-3.5%/degrees C and 5.3%/degrees 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 (Delta T(0)) can increase the performance of solution regeneration significantly. Compared to parallel flow regeneration, the performance of counterflow regeneration was increased about 10%.
