def __init__(self):
"""
Load up the necessary sub-structures to be filled with
the code that follows
"""
self.Compressor = CompressorClass()
#Outdoor coil is a Condenser in cooling mode and evaporator in heating mode
self.Condenser = CondenserClass()
self.Condenser.Fins = FinInputs()
self.Evaporator = EvaporatorClass()
self.Evaporator.Fins = FinInputs()
self.CoolingCoil = CoolingCoilClass()
self.CoolingCoil.Fins = FinInputs()
self.Pump = PumpClass()
#Add both types of internal heat exchangers
self.CoaxialIHX = CoaxialHXClass()
self.PHEIHX = PHEHXClass()
self.LineSetSupply = LineSetClass()
self.LineSetReturn = LineSetClass()
#Make IHX an empty class for holding parameters common to PHE and Coaxial IHX
class struct:
pass
self.IHX = struct()
def __init__(self):
"""
Load up the necessary sub-structures to be filled with
the code that follows
"""
self.Compressor=CompressorClass()
self.Condenser=CondenserClass()
self.Condenser.Fins=FinInputs()
self.Evaporator=EvaporatorClass()
self.Evaporator.Fins=FinInputs()
self.LineSetSupply=LineSetClass()
self.LineSetReturn=LineSetClass()
def __init__(self):
"""
Load up the necessary sub-structures to be filled with
the code that follows
"""
self.Compressor=CompressorClass()
self.Condenser=CondenserClass()
self.Condenser.Fins=FinInputs()
self.CoolingCoil=CoolingCoilClass()
self.CoolingCoil.Fins=FinInputs()
self.PHEHX=PHEHXClass()
self.Pump=PumpClass()
def TestCase():
CC = CoolingCoilClass()
FinsTubes = FinInputs()
FinsTubes.Tubes.NTubes_per_bank = 32
FinsTubes.Tubes.Nbank = 3
FinsTubes.Tubes.Ncircuits = 5
FinsTubes.Tubes.Ltube = 0.452
FinsTubes.Tubes.OD = 0.009525
FinsTubes.Tubes.ID = 0.0089154
FinsTubes.Tubes.Pl = 0.0254
FinsTubes.Tubes.Pt = 0.0219964
FinsTubes.Fins.FPI = 14.5
FinsTubes.Fins.Pd = 0.001
FinsTubes.Fins.xf = 0.001
FinsTubes.Fins.t = 0.00011
FinsTubes.Fins.k_fin = 237
FinsTubes.Air.Vdot_ha = 0.5663
FinsTubes.Air.Tmean = 299.8
FinsTubes.Air.Tdb = 299.8
FinsTubes.Air.p = 101.325
FinsTubes.Air.RH = 0.51
FinsTubes.Air.RHmean = 0.51
FinsTubes.Air.FanPower = 438
CC.Fins = FinsTubes
CC.Ref_g = 'Water'
CC.mdot_g = 0.15
CC.Tin_g = 278
CC.pin_g = 300
CC.Verbosity = 3
CC.Calculate()
print CC.OutputList()
def SampleCondenser(T=41.37):
Fins = FinInputs()
Fins.Tubes.NTubes_per_bank = 41 #number of tubes per bank or row
Fins.Tubes.Nbank = 1 #number of banks or rows
Fins.Tubes.Ncircuits = 5 #number of circuits
Fins.Tubes.Ltube = 2.286 #one tube length
Fins.Tubes.OD = 0.007
Fins.Tubes.ID = 0.0063904
Fins.Tubes.Pl = 0.0191 #distance between center of tubes in flow direction
Fins.Tubes.Pt = 0.0222 #distance between center of tubes orthogonal to flow direction
Fins.Fins.FPI = 25 #Number of fins per inch
Fins.Fins.Pd = 0.001 #2* amplitude of wavy fin
Fins.Fins.xf = 0.001 #1/2 period of fin
Fins.Fins.t = 0.00011 #Thickness of fin material
Fins.Fins.k_fin = 237 #Thermal conductivity of fin material
Fins.Air.Vdot_ha = 1.7934 #rated volumetric flowrate
Fins.Air.Tmean = 308.15
Fins.Air.Tdb = 308.15 #Dry Bulb Temperature
Fins.Air.p = 101325 #Air pressure in Pa
Fins.Air.RH = 0.51 #Relative Humidity
Fins.Air.RHmean = 0.51
Fins.Air.FanPower = 160
params = {
'Ref': 'R410A',
'mdot_r': 0.0708,
'Tin_r': T + 20 + 273.15,
'psat_r': PropsSI('P', 'T', T + 273.15, 'Q', 1.0, 'R410A'),
'Fins': Fins,
'FinsType':
'HerringboneFins', #Choose fin Type: 'WavyLouveredFins' or 'HerringboneFins'or 'PlainFins'
'Verbosity': 0
}
Cond = CondenserClass(**params)
Cond.Calculate()
return Cond
def TestCase():
CC = CoolingCoilClass()
FinsTubes = FinInputs()
FinsTubes.Tubes.NTubes_per_bank = 32
FinsTubes.Tubes.Nbank = 3
FinsTubes.Tubes.Ncircuits = 5
FinsTubes.Tubes.Ltube = 0.452
FinsTubes.Tubes.OD = 0.009525
FinsTubes.Tubes.ID = 0.0089154
FinsTubes.Tubes.Pl = 0.0254
FinsTubes.Tubes.Pt = 0.0219964
FinsTubes.Fins.FPI = 14.5
FinsTubes.Fins.Pd = 0.001
FinsTubes.Fins.xf = 0.001
FinsTubes.Fins.t = 0.00011
FinsTubes.Fins.k_fin = 237
FinsTubes.Air.Vdot_ha = 0.5663
FinsTubes.Air.Tmean = 299.8
FinsTubes.Air.Tdb = 299.8
FinsTubes.Air.p = 101325 #Air pressure in Pa
FinsTubes.Air.RH = 0.51
FinsTubes.Air.RHmean = 0.51
FinsTubes.Air.FanPower = 438
CC.Fins = FinsTubes
CC.FinsType = 'WavyLouveredFins' #Choose fin Type: 'WavyLouveredFins' or 'HerringboneFins'or 'PlainFins'
CC.Ref_g = 'Water'
CC.mdot_g = 0.15
CC.Tin_g = 278
CC.pin_g = 300000 #Refrigerant vapor pressure in Pa
CC.Verbosity = 3
CC.Calculate()
print CC.OutputList()
if __name__=='__main__':
#Example usage for a parametric study
import pylab
num_points= 101
T_dews= np.linspace(270,299.7,num_points)
TT= np.empty(num_points)
Q_2p= np.empty(num_points)
w_2p= np.empty(num_points)
w_sh= np.empty(num_points)
Q_tot= np.empty(num_points)
h_2p= np.empty(num_points)
h_sh= np.empty(num_points)
FinsTubes=FinInputs()
FinsTubes.Tubes.NTubes_per_bank=32
FinsTubes.Tubes.Ncircuits=5
FinsTubes.Tubes.Nbank=3
FinsTubes.Tubes.Ltube=0.452
FinsTubes.Tubes.OD=0.009525
FinsTubes.Tubes.ID=0.0089154
FinsTubes.Tubes.Pl=0.0254
FinsTubes.Tubes.Pt=0.0219964
FinsTubes.Fins.FPI=14.5
FinsTubes.Fins.Pd=0.001
FinsTubes.Fins.xf=0.001
FinsTubes.Fins.t=0.00011
FinsTubes.Fins.k_fin=237
from __future__ import division #Make integer 3/2 give 1.5 in python 2.x
from CoolProp.CoolProp import Props
import numpy as np
import pylab as pylab
from math import pi
import sys
sys.path.append('../../..../')
#from PyACHP.Correlations import AccelPressureDrop, LockhartMartinelli
from FinCorrelations import WavyLouveredFins,HerringboneFins,FinInputs,PlainFins
#example evaporator
FinsTubes=FinInputs()
FinsTubes.Tubes.NTubes_per_bank=32
FinsTubes.Tubes.Ncircuits=5
FinsTubes.Tubes.Nbank=6
FinsTubes.Tubes.Ltube=0.452
FinsTubes.Tubes.OD=0.009525
FinsTubes.Tubes.ID=0.0089154
FinsTubes.Tubes.Pl=0.0254
FinsTubes.Tubes.Pt=0.0219964
FinsTubes.Fins.FPI=14.5
FinsTubes.Fins.Pd=0.001
FinsTubes.Fins.xf=0.001
FinsTubes.Fins.t=0.00011
FinsTubes.Fins.k_fin=237
FinsTubes.Air.Vdot_ha=0.5663
FinsTubes.Air.Tmean=299.8
FinsTubes.Air.Tdb=299.8
from CoolProp.CoolProp import PropsSI
from Condenser import CondenserClass
from FinCorrelations import FinInputs
Fins = FinInputs()
Fins.Tubes.NTubes_per_bank = 41 #number of tubes per bank or row
Fins.Tubes.Nbank = 1 #number of banks or rows
Fins.Tubes.Ncircuits = 5 #number of circuits
Fins.Tubes.Ltube = 2.286 #one tube length
Fins.Tubes.OD = 0.007
Fins.Tubes.ID = 0.0063904
Fins.Tubes.Pl = 0.0191 #distance between center of tubes in flow direction
Fins.Tubes.Pt = 0.0222 #distance between center of tubes orthogonal to flow direction
Fins.Fins.FPI = 25 #Number of fins per inch
Fins.Fins.Pd = 0.001 #2* amplitude of wavy fin
Fins.Fins.xf = 0.001 #1/2 period of fin
Fins.Fins.t = 0.00011 #Thickness of fin material
Fins.Fins.k_fin = 237 #Thermal conductivity of fin material
Fins.Air.Vdot_ha = 1.7934 #rated volumetric flowrate
Fins.Air.Tdb = 308.15 #Dry Bulb Temperature
Fins.Air.p = 101325 #Air pressure in Pa
Fins.Air.RH = 0.51 #Relative Humidity
Fins.Air.FanPower = 160
params = {
'Ref': 'R410A',
'mdot_r': 0.0708,
'Tin_r': 333.15,
'psat_r': PropsSI('P', 'T', 323.15, 'Q', 1.0, 'R410A'),
