Abstract In this study, aqueous solution of CaCl2/SiO2 nanoparticles has been used as a desiccant in a gas–liquid hollow fiber membrane (HFM) air dehumidifier contactor system. The heat and mass (H/M) transfer properties HFM energy exchanger with CaCl2/H2O-SiO2 as desiccant solution studied experimentally for first time. Effects of different parameters on H/M transfer characteristics of system, including the nanoparticle concentration, liquid flow rate and liquid temperature were examined experimentally. The experiments arranged for desiccant temperatures of 20 °C and 26 °C, desiccant solutions of 0, 1%wt and 2%wt concentration and flow rates of 1.1, 1.25, 1.4 and 1.7 ml/s. The results indicated that the influence of particles on moisture removal rate is the greatest for the conditions of highest solution temperature and the highest particle. By introducing nanofluid solution as liquid desiccant in system the enhancing effect of reducing desiccant temperature on moisture removal lessens and declined to zero by increasing the solution flow rate with a high descending rate. For 2%wt nanoparticle concentration by 53% increase of absorbent flow rate, the value of temperature effectiveness reduced by 30%. This justifies adiabatic application of hollow fiber membrane systems with nanofluid desiccant.

中文翻译：

---

CaCl2/H2O-SiO2纳米流体在气液微孔中空纤维膜接触器中传热传湿性能的实验研究

摘要 在这项研究中，CaCl2/SiO2 纳米颗粒的水溶液已被用作气液中空纤维膜 (HFM) 空气除湿器接触器系统中的干燥剂。首次通过实验研究了以CaCl2/H2O-SiO2为干燥剂溶液的传热传质(H/M)性能HFM能量交换器。实验研究了不同参数对系统H/M传递特性的影响，包括纳米颗粒浓度、液体流速和液体温度。实验安排干燥剂温度为 20 °C 和 26 °C，干燥剂溶液浓度为 0、1%wt 和 2%wt，流速为 1.1、1.25、1.4 和 1.7 ml/s。结果表明，在溶液温度最高和颗粒最大的条件下，颗粒对水分去除率的影响最大。通过在系统中引入纳米流体溶液作为液体干燥剂，降低干燥剂温度对水分去除的增强作用随着溶液流速的增加而减小并下降到零。对于 2%wt 纳米颗粒浓度，吸收剂流速增加 53%，温度效率值降低 30%。这证明了具有纳米流体干燥剂的中空纤维膜系统的绝热应用是合理的。