The formula for calculating the K value in the example on page P252 of the association’s book differs from that in the textbook on principles of chemical engineering
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In the example of the plate and frame filter given on page P252 of the association’s book, the formula for calculating the K value differs from that in the textbook on chemical engineering principles, and the resulting values are also different. Why is this? What should I do during the exam? I’m anxious
In the association’s textbook, K is given as 2△P/r∮μ, while in the textbook on chemical engineering principles, K is expressed as 2k△P∧(1-s); is k equal to 1/r’μυ? ?
I don’t have a book with me. It seems one takes the compressibility factor into account, while the other doesn’t?
The key issue is that the calculation results differ, so it’s not clear which formula is correct to use.
It should be the same! It’s possible that the way of expression is different; one of the factors might be implied in other terms. If it really is different, use the information from textbooks on chemical engineering principles, as those textbooks have gone through rigorous review. Reproduced materials may contain errors due to misrepresentation
Thank you! The formulas in Chen Minheng’s version and those in Tianjin University’s version are different; the formulas used by the association are the same as those in Chen Minheng’s version. Logically, the final results should be identical