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以上海徐汇某别墅空调系统为例,利用TRNSYS软件对太阳能溶液除湿新风系统的运行情况进行数值模拟,以验证该系统夏季供冷工况下运行的稳定性和可靠性。主要模拟太阳能溶液除湿新风系统运行过程中新风经过各级除湿塔后含湿量的变化、除湿溶液经各级除湿塔后浓度的变化以及除湿溶液再生前后浓度的变化。结果表明:一、二级除湿塔的除湿效率较高,三、四级除湿塔的除湿效率相对较低;使用者可根据室外含湿量具体情况选择除湿塔运行级数,而四级除湿塔的联合运行能保证全夏季空调期内送风含湿量均低于设计送风含湿量11.22 g/kg;除湿溶液经四级除湿后的平均浓度保持在34%~35%之间,仍保留有一定的除湿能力;夏季空调期内溶液再生前后浓度差的平均值为6.48%,溶液再生效率高,能为除湿环节提供稳定的除湿浓溶液。太阳能溶液除湿新风系统运行稳定,能满足不同室内外气象参数条件下系统送风参数的要求。
Taking a villa air conditioning system in Xuhui, Shanghai as an example, the operation of the fresh air dehumidification system for solar water solution was numerically simulated by using TRNSYS software to verify the stability and reliability of the system under summer cooling conditions. Mainly simulate the solar air system dehumidification fresh air system during the fresh air through the dehumidification tower at all levels of moisture content changes, dehumidification solution after dehumidification tower at all levels of concentration changes and dehumidification solution before and after regeneration concentration changes. The results show that the dehumidification efficiency of the first and second dehumidification towers is relatively high, and the dehumidification efficiency of the dehumidifiers of the third and fourth densities is relatively low. The user can select the operating stages of the dehumidification tower according to the specific conditions of the outdoor moisture content, Of the joint operation to ensure that all summer air-conditioned air supply moisture content are lower than the designed air supply moisture content of 11.22 g / kg; dehumidification solution after four dehumidification average concentration remained at 34% to 35%, still And retain a certain degree of dehumidification capacity. The average value of concentration difference before and after solution regeneration in summer air-conditioning period is 6.48%, and the solution regeneration efficiency is high, which can provide a stable dehumidification concentrated solution for dehumidification. The solar air system dehumidification fresh air system is stable and can meet the requirements of the system air supply parameters under different indoor and outdoor meteorological parameters.