No. I think I was not clear. I don't have problem with de LMTD.
The Kern's formula is for the factor f, from Q = U * A * f * LMTD, for a heat exchanger with an even number of passes on the tubes.
Using the values of 25362:
Hot fluid 100°C ---> 50°C (tubes)
Cold fluid 90°C <--- 20°C (shell)
We...
I'm using the equation from the Kern's book to calculate the correctiojn factor for LMTD (log mean temperature difference), of a heat exchanger with one pass in the shell, and 2 in the tubes.
In some cases, a numeric error occurs, leading to a logarithm of a negative number. I tested some...
Hi, everybody,
My name is Renato. I'm a chemical engineer in Brazil.
I'm doing my post-graduation on petroleum refinnig. My project is based on correlations to predict the fuel oil viscosity when diluted with medium distillates.
I found many models based on Viscosity Blending Numbers, such as...
