def __init__(self):
"""
Sets a bunch of constants, binds methods, inits parent class
self.enh_lib = enhancement - Used in hx.py
Also initializes super class, which is ideal_gas from the
properties script. I keep this script in ~/Documents/Python,
which is part of my python path.
"""
super(Exhaust, self).__init__()
self.enh_lib = enhancement
self.enh = None
self.T_ref = 300.
self.P = 101.
self.height = 1.5e-2
self.ducts = 1
self.sides = 2
self.mdot_omega = 0.2 / 60.
self.Nu_coeff = 0.023
functions.bind_functions(self)
def __init__(self):
"""
Sets contants and instantiates classes.
self.enh_lib = enhancement - Used in hx.py
"""
self.enh_lib = enhancement
self.enh = None
self.height = 1.e-2
# height (m) of coolant duct
self.mdot = 1.0
# mass flow rate (kg/s) of coolant
self.ducts = 2 # number of coolant ducts per hot duct
self.geometry = 'parallel plates'
self.c_p = 4.179
# Specific heat (kJ/kg*K) of water at 325K
self.mu = 5.3e-4
# viscosity of water at 325K (Pa*s), WolframAlpha
self.k = 0.646e-3
# thermal conductivity of water at 325K (kW/m*K) through
# cooling duct
self.Pr = (7.01 + 5.43)/2 # Prandtl # of water from Engineering
# Toolbox
self.rho = 1000.
# density (kg/m**3) of water
self.Nu_coeff = 0.023
self.enthalpy0 = 113.25
# enthalpy (kJ/kg) of coolant at restricted dead state
self.entropy0 = 0.437
# entropy (kJ/kg*K) of coolant at restricted dead state
self.sides = 1
functions.bind_functions(self)
