CORRELATIONS (1978) Hilpert Correlation: Hilpert was one of the earliest researchers in the area of forced convection from heated pipe surfaces. He developed the correlation Hilpert’s constants for forced convection Hilpert’s calculations were done using integrated mean temperature values, not mean film temperature values, and with inaccurate values for the thermophysical properties of air. The thermal conductivity values of air used by Hilpert were low. This resulted in the values of Nusselt number calculated by the Hilpert correlation to be higher than they should be. Zuakaukas Correlation: Another correlation proposed by Zukaukas for convective heat transfer over a heated pipe. Where the values of c and m are given. Except for PRW, all calculations were done at the mean film temperature.
Hilpert Correlation:Hilpert was one of the earliest researchers
in the area of forced convection from heated pipe surfaces. He
developed the correlation
Hilperts constants for forced convection
Hilperts calculations were done using integrated mean
temperature values, not mean film temperature values, and with
inaccurate values for the thermophysical properties of air. The
thermal conductivity values of air used by Hilpert were low. This
resulted in the values of Nusselt number calculated by the Hilpert
correlation to be higher than they should be.
Zuakaukas Correlation:Another correlation proposed by Zukaukas
for convective heat transfer over a heated pipe. Where the values
of c and m are given. Except for PRW, all calculations were done at
the mean film temperature.
Morgan Correlation:Morgan conducted an extensive review of
literature on convection from a heated pipe and proposed the
correlation
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