def test_initialize():
m = ConcreteModel()
m.fs = FlowsheetBlock(default={"dynamic": False})
m.fs.properties = BTXParameterBlock()
m.fs.ff = FeedFlash(default={"property_package": m.fs.properties})
m.fs.ff.flow_mol.fix(1)
m.fs.ff.temperature.fix(368)
m.fs.ff.pressure.fix(101325)
m.fs.ff.mole_frac[0, "benzene"].fix(0.5)
m.fs.ff.mole_frac[0, "toluene"].fix(0.5)
assert degrees_of_freedom(m) == 0
m.fs.ff.initialize(outlvl=5, optarg={'tol': 1e-6})
assert (pytest.approx(101325.0,
abs=1e3) == m.fs.ff.outlet.pressure[0].value)
assert (pytest.approx(368.00,
abs=1e-0) == m.fs.ff.outlet.temperature[0].value)
assert (pytest.approx(1.0, abs=1e-2) == m.fs.ff.outlet.flow_mol[0].value)
assert (pytest.approx(0.355, abs=1e-3) == m.fs.ff.control_volume.
properties_out[0].flow_mol_phase["Vap"].value)
def btx(self):
m = ConcreteModel()
m.fs = FlowsheetBlock(default={"dynamic": False})
m.fs.properties = BTXParameterBlock()
m.fs.unit = FeedFlash(default={"property_package": m.fs.properties})
return m
def iapws(self):
m = ConcreteModel()
m.fs = FlowsheetBlock(default={"dynamic": False})
m.fs.properties = iapws95.Iapws95ParameterBlock(default={
"phase_presentation": iapws95.PhaseType.LG})
m.fs.unit = FeedFlash(default={"property_package": m.fs.properties,
"flash_type": FlashType.isenthalpic})
return m
def btx(self):
m = ConcreteModel()
m.fs = FlowsheetBlock(default={"dynamic": False})
m.fs.properties = BTXParameterBlock(default={
"valid_phase": ('Liq', 'Vap'),
"activity_coeff_model": "Ideal"
})
m.fs.unit = FeedFlash(default={"property_package": m.fs.properties})
return m
def test_config():
m = ConcreteModel()
m.fs = FlowsheetBlock(default={"dynamic": False})
m.fs.properties = PhysicalParameterTestBlock()
m.fs.unit = FeedFlash(default={"property_package": m.fs.properties})
# Check unit config arguments
assert len(m.fs.unit.config) == 6
assert not m.fs.unit.config.dynamic
assert not m.fs.unit.config.has_holdup
assert m.fs.unit.config.material_balance_type == \
MaterialBalanceType.useDefault
assert m.fs.unit.config.flash_type == FlashType.isothermal
assert m.fs.unit.config.property_package is m.fs.properties
def test_build():
m = ConcreteModel()
m.fs = FlowsheetBlock(default={"dynamic": False})
m.fs.properties = BTXParameterBlock()
m.fs.ff = FeedFlash(default={"property_package": m.fs.properties})
assert hasattr(m.fs.ff, "flow_mol")
assert hasattr(m.fs.ff, "mole_frac")
assert hasattr(m.fs.ff, "temperature")
assert hasattr(m.fs.ff, "pressure")
assert hasattr(m.fs.ff, "outlet")
assert len(m.fs.ff.outlet.vars) == 4
assert hasattr(m.fs.ff.outlet, "flow_mol")
assert hasattr(m.fs.ff.outlet, "mole_frac")
assert hasattr(m.fs.ff.outlet, "temperature")
assert hasattr(m.fs.ff.outlet, "pressure")
assert hasattr(m.fs.ff, "isothermal")