PF pin-fin h
The procedure:
CHX_h_PF_pin_fin(TypeHX$, m_dot, A_fr_tot, b_2, Fluid$, T, P:h)
provides the heat transfer coefficient associated with a pin-fin compact heat exchanger surface. These data are from Kays and London (1994).
Inputs
TypeHX$: string identifying the geometry
AP-1: 'PF_pin-fin_AP1'
AP-2: 'PF_pin-fin_AP2'
PF-3: 'PF_pin-fin_PF3'
PF-4(F): 'PF_pin-fin_PF4F'
PF-9(F): 'PF_pin-fin_PF9F'
PF-10(F): 'PF_pin-fin_PF10F'
m_dot: mass flow rate (kg/s or lbm/hr)
A_fr_tot: total frontal area as viewed by the flow approaching the tube bank (m^2 or ft^2); note that this includes both the pin fin channels and the space occupied by the other channels
b_2: the width between adjacent pin fin channels occupied by the other channels (m or ft)
Fluid$: 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) averaged over entire pin fin surface (includes plates)
Example
$UnitSystem SI Mass J K Pa
$VarInfo h units=W/m^2-K
TypeHX$='PF_pin-fin_AP-1'
m_dot=0.7 [kg/s]
A_fr_tot=0.1 [m^2]
Fluid$='Air'
T=300 [K]
T_i=300 [K]
T_o=300 [K]
P=101325 [Pa]
b_2=0.01 [m]
Call chx_h_pf_pin_fin(TypeHX$, m_dot, A_fr_tot, b_2, Fluid$, T, P : h)
{Solution:
h = 298.7 [W/m^2-K]}
Related procedures include: