Flow through annuli:  If the fluid is flowing through an annulus, then heat transfer correlations are given in Table 5.5.

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Module for caluclation of heat transfer through an annulus:

do (Outside diameter of inner tube , in)
Di (Inside diameter of Outer tube , in)
L (Tube length , ft)
VISC (Viscosity, lb per ft per hr)
W (mass flow rate, lb per hr)
rho (Density, lb per ft3)
k (Thermal conductivity, BTU per hr per ft per deg F)
C (heat capacity, BTU per lb per deg F)
visc_w (Viscosity at wall temperature, lb per ft per hr)
phi (Viscosity correction factor)
Tb (Tube side fluid bulk temperature, deg F)
tw (Wall temperature, deg F)
T1 (Inlet temperature of Hot fluid, deg F)
T2 (Outlet temperature of cold fluid, deg F)
beta (coefficient of thermal expansion, per deg R)