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Humidifier Design Considerations

Humidifier Design Considerations

Humidifier Design Considerations

(OP)
I am currently designing a verticle sparger style gas humidifier.  Currently I have looked into designing the diameter of the vessle such that particles of a size larger than 150 microns will fall out of the gas flow.  The 150 microns is typical of a mist like particle, which was why I chose that number.  Currently I'm uncertain what length to use, and what design considerations to use.  The only factor I could think of was the residence time of the gas bubbles in the water.  However I was having troubles determining the diffusion rate of water into the gas particle.  It seems as though this analysis could get far more complicated than I wish.  Is there any "rule of thumb" type design parameters for this vessel.

Another question was the effect of packing material in this humdifier, and its advantages.  The packing will create a torcherous path for the fluid.  However if I use packing material made of plastic it will limit the upper temperature range I can use.  So is packing material sufficiently beneficial, and is there packing material available in something other than plastic that is reasonably priced?

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