Finned circular tubes h
The procedure:
CHX_h_Finned_Circular_Tube(TypeHX$, m_dot, A_fr, Fluid$, T, P:h)
provides the heat transfer coefficient associated with a finned circular tube compact heat exchanger surface. These data are from Kays and London (1994).
Inputs
TypeHX$: string identifying the geometry
CF-7.34 : 'fc_tubes_sCF-734'
CF-8.72 : 'fc_tubes_sCF-872'
CF-8.72(c) : 'fc_tubes_sCF-872c'
CF-7.0-5/8J : 'fc_tubes_sCF-70-58J'
CF-8.7-5/8J(a) : 'fc_tubes_sCF-87-58Ja'
CF-8.7-5/8J(b) : 'fc_tubes_sCF-87-58Jb'
CF-9.05-3/4J(a) : 'fc_tubes_sCF-905-34Ja'
CF-9.05-3/4J(b) : 'fc_tubes_sCF-905-34Jb'
CF-9.05-3/4J(c) : 'fc_tubes_sCF-905-34Jc'
CF-9.05-3/4J(d) : 'fc_tubes_sCF-905-34Jd'
CF-9.05-3/4J(e) : 'fc_tubes_sCF-905-34Je'
CF-8.8-1.0J(a) : 'fc_tubes_sCF-88-10Ja'
CF-8.8-1.0J(b) : 'fc_tubes_sCF-88-10Jb'
8.0-3/8T : 'fc_tubes_80-38T'
7.75-5/8T : 'fc_tubes_775-58T'
m_dot: mass flow rate (kg/s or lbm/hr)
A_fr: frontal area as viewed by the flow approaching the tube bank (m^2 or ft^2)
Fluid$: string indicating the fluid type
T: temperature of the fluid (K, C, R, or F)
P: absolute pressure of the fluid (Pa, kPa, bar. MPa, atm, or psi)
Output
h: heat transfer coefficient (W/m^2-K or Btu/hr-ft^2-R)
Example
$UnitSystem SI Mass J K Pa
TypeHX$='fc_tubes_sCF-88-10Jb'
m_dot=0.7 [kg/s]
A_fr=0.1 [m^2]
L=1 [m]
Fluid$='Air'
T=300 [K]
P=101325 [Pa]
Call chx_h_finned_circular_tube(TypeHX$, m_dot, A_fr, Fluid$, T, P:h)
{Solution is:
h = 91.93 [W/m^2-K]}
Related procedures include: