def test_valve(self):
"""
Test component properties of valves.
"""
instance = cmp.valve('valve')
c1, c2 = self.setup_network_11(instance)
fl = {
'N2': 0.7556,
'O2': 0.2315,
'Ar': 0.0129,
'INCOMP::DowQ': 0,
'H2O': 0,
'NH3': 0,
'CO2': 0,
'CH4': 0
}
c1.set_attr(fluid=fl, m=10, p=10, T=120)
c2.set_attr(p=1)
instance.set_attr(pr='var')
self.nw.solve('design')
eq_(
round(c2.p.val_SI / c1.p.val_SI,
1), round(instance.pr.val,
1), 'Value of pressure ratio must be ' +
str(c2.p.val_SI / c1.p.val_SI) + ', is ' + str(instance.pr.val) +
'.')
zeta = instance.zeta.val
instance.set_attr(zeta='var', pr=np.nan)
self.nw.solve('design')
eq_(
round(zeta, 1), round(instance.zeta.val,
1), 'Value of pressure ratio must be ' +
str(zeta) + ', is ' + str(instance.zeta.val) + '.')
def create_comps(self):
self.inlet = cmp.subsys_interface(label=self.label + '_inlet',
num_inter=self.num_branch + 1)
self.outlet = cmp.subsys_interface(label=self.label + '_outlet',
num_inter=self.num_branch + 1)
self.splitter = cmp.splitter(label=self.label + '_splitter')
self.merge = cmp.merge(label=self.label + '_merge')
self.valve = []
for i in range(self.num_branch):
j = str(i)
self.valve += [
cmp.valve(label=self.label + '_valve_' + j, mode='man')
]
def create_comps(self):
self.num_i = 1
self.num_o = 1
self.inlet = cmp.subsys_interface(label=self.label + '_inlet',
num_inter=self.num_i)
self.outlet = cmp.subsys_interface(label=self.label + '_outlet',
num_inter=self.num_o)
self.splitter = []
self.merge = []
self.heat_ex = []
self.valve = []
self.pipe_feed = []
self.pipe_back = []
for i in range(self.num_consumer - 1):
j = str(i)
self.splitter += [
cmp.splitter(label=self.label + '_splitter_' + j)
]
self.merge += [cmp.merge(label=self.label + '_merge_' + j)]
self.heat_ex += [
cmp.heat_exchanger_simple(label=self.label +
'_heat exchanger_' + j,
mode='man')
]
self.valve += [
cmp.valve(label=self.label + '_valve_' + j, mode='man')
]
self.pipe_feed += [
cmp.pipe(label=self.label + '_pipe feed_' + j,
offdesign=['kA'])
]
self.pipe_back += [
cmp.pipe(label=self.label + '_pipe back_' + j,
offdesign=['kA'])
]
self.heat_ex += [
cmp.heat_exchanger_simple(label=self.label + '_heat exchanger_' +
str(i + 1),
mode='man')
]
from tespy import con, cmp, nwk import matplotlib.pyplot as plt import pandas as pd import numpy as np # %% network fluids = ['water'] nw = nwk.network(fluids=fluids, p_unit='bar', T_unit='C', h_unit='kJ / kg') # %% components # turbine part valve_turb = cmp.valve(label='valve_turb') turbine_hp = cmp.turbine(label='turbine_hp') split = cmp.splitter(label='splitter1') turbine_lp = cmp.turbine(label='turbine_lp') # condenser and preheater condenser = cmp.condenser(label='condenser') preheater = cmp.condenser(label='preheater') valve_pre = cmp.valve(label='valve_pre') valve = cmp.valve(label='valve1') merge = cmp.merge(label='merge1') # feed water pump = cmp.pump(label='pump') steam_generator = cmp.heat_exchanger_simple(label='steam generator')
amb_out2 = cmp.sink('sink ambient 2')
c_out = cmp.sink('coolant out')
# ambient air system
sp = cmp.splitter('splitter')
fan = cmp.compressor('fan')
# consumer system
cd = cmp.condenser('condenser')
dhp = cmp.pump('district heating pump')
cons = cmp.heat_exchanger_simple('consumer')
# evaporator system
ves = cmp.valve('valve')
dr = cmp.drum('drum')
ev = cmp.heat_exchanger('evaporator')
su = cmp.heat_exchanger('superheater')
erp = cmp.pump('evaporator reciculation pump')
# compressor-system
cp1 = cmp.compressor('compressor 1')
cp2 = cmp.compressor('compressor 2')
ic = cmp.heat_exchanger('intercooler')
# %% connections
# consumer system
amb_in = cmp.source('source ambient')
amb_out = cmp.sink('sink ambient')
ic_in = cmp.source('source intercool')
ic_out = cmp.sink('sink intercool')
c_out = cmp.sink('coolant out')
# consumer system
cd = cmp.condenser('condenser')
rp = cmp.pump('recirculation pump')
cons = cmp.heat_exchanger_simple('consumer')
# evaporator system
va = cmp.valve('valve')
dr = cmp.drum('drum')
ev = cmp.heat_exchanger('evaporator')
su = cmp.heat_exchanger('superheater')
pu = cmp.pump('pump evaporator')
# compressor-system
cp1 = cmp.compressor('compressor 1')
cp2 = cmp.compressor('compressor 2')
he = cmp.heat_exchanger('intercooler')
# %% connections
# consumer system
def setup_network_individual_offdesign(self):
"""
Set up network for individual offdesign tests.
"""
so = cmp.source('source')
sp = cmp.splitter('splitter', num_out=2)
self.pump1 = cmp.pump('pump 1')
self.sc1 = cmp.solar_collector('collector field 1')
v1 = cmp.valve('valve1')
self.pump2 = cmp.pump('pump 2')
self.sc2 = cmp.solar_collector('collector field 2')
v2 = cmp.valve('valve2')
me = cmp.merge('merge', num_in=2)
si = cmp.sink('sink')
self.pump1.set_attr(eta_s=0.8,
design=['eta_s'],
offdesign=['eta_s_char'])
self.pump2.set_attr(eta_s=0.8,
design=['eta_s'],
offdesign=['eta_s_char'])
self.sc1.set_attr(pr=0.95,
lkf_lin=3.33,
lkf_quad=0.011,
A=1252,
E=700,
Tamb=20,
design=['pr'],
offdesign=['zeta'])
self.sc2.set_attr(pr=0.95,
lkf_lin=3.5,
lkf_quad=0.011,
A=700,
E=800,
Tamb=20,
design=['pr'],
offdesign=['zeta'])
fl = {
'N2': 0,
'O2': 0,
'Ar': 0,
'INCOMP::DowQ': 0,
'H2O': 1,
'NH3': 0,
'CO2': 0,
'CH4': 0
}
inlet = con.connection(so, 'out1', sp, 'in1', T=50, p=3, fluid=fl)
outlet = con.connection(me, 'out1', si, 'in1', p=3)
sp_p1 = con.connection(sp, 'out1', self.pump1, 'in1')
p1_sc1 = con.connection(self.pump1, 'out1', self.sc1, 'in1')
self.sc1_v1 = con.connection(self.sc1, 'out1', v1, 'in1', p=3.1, T=90)
v1_me = con.connection(v1, 'out1', me, 'in1')
self.sp_p2 = con.connection(sp, 'out2', self.pump2, 'in1')
self.p2_sc2 = con.connection(self.pump2, 'out1', self.sc2, 'in1')
self.sc2_v2 = con.connection(self.sc2, 'out1', v2, 'in1', p=3.1, m=0.1)
v2_me = con.connection(v2, 'out1', me, 'in2')
self.nw.add_conns(inlet, outlet, sp_p1, p1_sc1, self.sc1_v1, v1_me,
self.sp_p2, self.p2_sc2, self.sc2_v2, v2_me)
def setup(self):
# %% network
self.nw = nwk.network(fluids=['water', 'NH3'],
T_unit='C',
p_unit='bar',
h_unit='kJ / kg',
m_unit='kg / s')
# %% components
# sources & sinks
c_in = cmp.source('coolant in')
cb = cmp.source('consumer back flow')
cf = cmp.sink('consumer feed flow')
amb_in = cmp.source('source ambient')
amb_out = cmp.sink('sink ambient')
ic_in = cmp.source('source intercool')
ic_out = cmp.sink('sink intercool')
c_out = cmp.sink('coolant out')
# consumer system
cd = cmp.heat_exchanger('condenser')
rp = cmp.pump('recirculation pump')
cons = cmp.heat_exchanger_simple('consumer')
# evaporator system
va = cmp.valve('valve')
dr = cmp.drum('drum')
ev = cmp.heat_exchanger('evaporator')
su = cmp.heat_exchanger('superheater')
pu = cmp.pump('pump evaporator')
# compressor-system
cp1 = cmp.compressor('compressor 1')
cp2 = cmp.compressor('compressor 2')
he = cmp.heat_exchanger('intercooler')
# busses
x = np.array([0, 0.7, 1, 1.3])
y = 1 / np.array([0.8, 0.95, 1, 0.98]) / 0.9583794
motor = cmp_char.characteristics(x=x, y=y)
self.power = con.bus('total compressor power')
self.power.add_comps({
'c': cp1,
'char': motor
}, {
'c': cp2,
'char': motor
})
self.heat = con.bus('total delivered heat')
self.heat.add_comps({'c': cd, 'char': -1})
self.nw.add_busses(self.power, self.heat)
# %% connections
# consumer system
c_in_cd = con.connection(c_in, 'out1', cd, 'in1')
cb_rp = con.connection(cb, 'out1', rp, 'in1')
rp_cd = con.connection(rp, 'out1', cd, 'in2')
self.cd_cons = con.connection(cd, 'out2', cons, 'in1')
cons_cf = con.connection(cons, 'out1', cf, 'in1')
self.nw.add_conns(c_in_cd, cb_rp, rp_cd, self.cd_cons, cons_cf)
# connection condenser - evaporator system
cd_va = con.connection(cd, 'out1', va, 'in1')
self.nw.add_conns(cd_va)
# evaporator system
va_dr = con.connection(va, 'out1', dr, 'in1')
dr_pu = con.connection(dr, 'out1', pu, 'in1')
pu_ev = con.connection(pu, 'out1', ev, 'in2')
ev_dr = con.connection(ev, 'out2', dr, 'in2')
dr_su = con.connection(dr, 'out2', su, 'in2')
self.nw.add_conns(va_dr, dr_pu, pu_ev, ev_dr, dr_su)
self.amb_in_su = con.connection(amb_in, 'out1', su, 'in1')
su_ev = con.connection(su, 'out1', ev, 'in1')
ev_amb_out = con.connection(ev, 'out1', amb_out, 'in1')
self.nw.add_conns(self.amb_in_su, su_ev, ev_amb_out)
# connection evaporator system - compressor system
su_cp1 = con.connection(su, 'out2', cp1, 'in1')
self.nw.add_conns(su_cp1)
# compressor-system
cp1_he = con.connection(cp1, 'out1', he, 'in1')
he_cp2 = con.connection(he, 'out1', cp2, 'in1')
cp2_c_out = con.connection(cp2, 'out1', c_out, 'in1')
ic_in_he = con.connection(ic_in, 'out1', he, 'in2')
he_ic_out = con.connection(he, 'out2', ic_out, 'in1')
self.nw.add_conns(cp1_he, he_cp2, ic_in_he, he_ic_out, cp2_c_out)
# %% component parametrization
# condenser system
rp.set_attr(eta_s=0.8, design=['eta_s'], offdesign=['eta_s_char'])
cons.set_attr(pr=1, design=['pr'], offdesign=['zeta'])
# evaporator system
ev.set_attr(pr1=1,
pr2=.999,
ttd_l=5,
design=['ttd_l'],
offdesign=['kA'],
kA_char1='EVA_HOT',
kA_char2='EVA_COLD')
# characteristic line for superheater kA
x = np.array(
[0, 0.045, 0.136, 0.244, 0.43, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2])
y = np.array(
[0, 0.037, 0.112, 0.207, 0.5, 0.8, 0.85, 0.9, 0.95, 1, 1.04, 1.07])
su_char = hlp.dc_cc(x=x, y=y, param='m')
su.set_attr(kA_char1='default',
kA_char2=su_char,
offdesign=['zeta1', 'zeta2', 'kA'])
pu.set_attr(eta_s=0.8, design=['eta_s'], offdesign=['eta_s_char'])
# compressor system
cp1.set_attr(eta_s=0.8, design=['eta_s'], offdesign=['eta_s_char'])
cp2.set_attr(eta_s=0.8, design=['eta_s'], offdesign=['eta_s_char'])
# characteristic line for intercooler kA
x = np.linspace(0, 2.5, 26)
y = np.array([
0.000, 0.164, 0.283, 0.389, 0.488, 0.581, 0.670, 0.756, 0.840,
0.921, 1.000, 1.078, 1.154, 1.228, 1.302, 1.374, 1.446, 1.516,
1.585, 1.654, 1.722, 1.789, 1.855, 1.921, 1.986, 2.051
])
he_char_cold = hlp.dc_cc(x=x, y=y, param='m')
he.set_attr(kA_char1='default',
kA_char2=he_char_cold,
offdesign=['zeta1', 'zeta2', 'kA'])
cd.set_attr(pr2=0.998, design=['pr2'], offdesign=['zeta2', 'kA'])
# %% connection parametrization
# condenser system
c_in_cd.set_attr(fluid={'water': 0, 'NH3': 1}, p=60)
cb_rp.set_attr(T=60, p=10, fluid={'water': 1, 'NH3': 0})
self.cd_cons.set_attr(T=105)
cons_cf.set_attr(h=con.ref(cb_rp, 1, 0), p=con.ref(cb_rp, 1, 0))
cd_va.set_attr(p=con.ref(c_in_cd, 1, -1000),
Td_bp=-5,
h0=500,
design=['Td_bp'])
# evaporator system cold side
pu_ev.set_attr(m=con.ref(va_dr, 10, 0), p0=5)
dr_su.set_attr(p0=5, T=5)
su_cp1.set_attr(p=con.ref(dr_su, 1, -5000),
Td_bp=5,
h0=1700,
design=['Td_bp', 'p'])
# evaporator system hot side
self.amb_in_su.set_attr(m=20, T=12, p=1, fluid={'water': 1, 'NH3': 0})
su_ev.set_attr(p=con.ref(self.amb_in_su, 1, -100), design=['p'])
ev_amb_out.set_attr()
# compressor-system
cp1_he.set_attr(p=15)
he_cp2.set_attr(T=40, p=con.ref(cp1_he, 1, -1000), design=['T', 'p'])
ic_in_he.set_attr(p=1, T=20, m=5, fluid={'water': 1, 'NH3': 0})
he_ic_out.set_attr(p=con.ref(ic_in_he, 1, -200), design=['p'])
cp2_c_out.set_attr(p=con.ref(c_in_cd, 1, 0), h=con.ref(c_in_cd, 1, 0))
drum = cmp.drum('drum')
eco = cmp.heat_exchanger('economizer')
ch = cmp.sink('chimney')
# steam turbine part
turb_hp = cmp.turbine('steam turbine high pressure')
cond_dh = cmp.condenser('district heating condenser')
mp_split = cmp.splitter('mp split')
turb_lp = cmp.turbine('steam turbine low pressure')
cond = cmp.condenser('condenser')
merge = cmp.merge('merge')
pump1 = cmp.pump('feed water pump 1')
pump2 = cmp.pump('feed water pump 2')
ls_out = cmp.sink('ls sink')
ls_in = cmp.source('ls source')
mp_valve = cmp.valve('mp valve')
# district heating
dh_in = cmp.source('district heating backflow')
dh_out = cmp.sink('district heating feedflow')
# cooling water
cw_in = cmp.source('cooling water backflow')
cw_out = cmp.sink('cooling water feedflow')
# %% connections
# gas turbine part
c_in = con.connection(air, 'out1', comp, 'in1')
c_out = con.connection(comp, 'out1', c_c, 'in1')
fuel_comp = con.connection(CH4, 'out1', comp_fuel, 'in1')
comp_cc = con.connection(comp_fuel, 'out1', c_c, 'in2')
