Inhalation gas humidification is a kind of major matter for patients using mechanical ventilation systems due to the necessity of keeping mucus layer at the suitable thickness and wetness. The performance of membrane humidifier with partially blocked gas channels, is investigated in this study. Three types of membrane humidifier channel arrangement, including a normal, wet channel with obstacles, and similar ones in both channels (wet and dry) are studied under various mass flow rates and temperatures. Flanged obstacles improve the thermal efficiency of the humidifier so that in this case the outlet dry air temperature can be increased about 4 degrees by using 10 obstacles in both channels but they increase the pressure drop noticeably. PEC is calculated as a dimensionless parameter to compare the performance enhancement with pressure drop increment, simultaneously. Higher water recovery rate (WRR) and dew point temperatures at the dry side channel outlet, indicate the higher humidifier performance. At all mass flow rates, presence of obstacles improves the performance of the humidifier by increasing the dew point temperature and water recovery rate (WRR). Overall, the presence of obstacles on both channels amplifies the overall performance of the membrane humidifier in almost all cases.

由于需要保持粘液层的厚度和湿度合适，因此吸入气体加湿是使用机械通气系统的患者的主要问题。本研究调查了气体通道部分阻塞的膜加湿器的性能。在各种质量流量和温度下研究了三种类型的膜加湿器通道布置，包括正常的、带有障碍物的湿通道，以及两个通道（湿和干）中的相似通道。法兰式障碍物提高了加湿器的热效率，因此在这种情况下，通过在两个通道中使用 10 个障碍物，出口干燥空气温度可以增加约 4 度，但它们会显着增加压降。PEC 被计算为一个无量纲参数，以同时比较性能增强与压降增量。干侧通道出口处较高的水回收率 (WRR) 和露点温度表明加湿器性能较高。在所有质量流量下，障碍物的存在通过提高露点温度和水回收率 (WRR) 来提高加湿器的性能。总的来说，在几乎所有情况下，两个通道上障碍物的存在都会放大膜加湿器的整体性能。障碍物的存在通过提高露点温度和水回收率 (WRR) 来提高加湿器的性能。总的来说，在几乎所有情况下，两个通道上障碍物的存在都会放大膜加湿器的整体性能。障碍物的存在通过提高露点温度和水回收率 (WRR) 来提高加湿器的性能。总的来说，在几乎所有情况下，两个通道上障碍物的存在都会放大膜加湿器的整体性能。