Expert ForumsDistillation

Topic: Re: How do I calculate the void space in a column?

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A packed bed makeup of a perfectly spherical shape always has a void space of 40%. Void space is greater where the sphere contacts the pipe wall.  I am sure that Dr. Hassan Niknafs of  Saint-Gobain  can provide you the information you need because his company manufactures and sells balls and pellets for packed beds.