#################################################################################
# WaterTAP Copyright (c) 2020-2024, The Regents of the University of California,
# through Lawrence Berkeley National Laboratory, Oak Ridge National Laboratory,
# National Renewable Energy Laboratory, and National Energy Technology
# Laboratory (subject to receipt of any required approvals from the U.S. Dept.
# of Energy). All rights reserved.
#
# Please see the files COPYRIGHT.md and LICENSE.md for full copyright and license
# information, respectively. These files are also available online at the URL
# "https://github.com/watertap-org/watertap/"
#################################################################################
"""
This module contains a zero-order representation of a water pumping station.
"""
from pyomo.environ import units as pyunits, Var
from pyomo.common.config import ConfigValue, In
from idaes.core import declare_process_block_class
from watertap.core import build_pt, ZeroOrderBaseData
from watertap.core.zero_order_electricity import _common
# Some more information about this module
__author__ = "Adam Atia"
[docs]@declare_process_block_class("WaterPumpingStationZO")
class WaterPumpingStationZOData(ZeroOrderBaseData):
"""
Zero-Order model for SW onshore intake operation.
"""
CONFIG = ZeroOrderBaseData.CONFIG()
CONFIG.declare(
"fix_pump_power",
ConfigValue(
default=True,
domain=In([True, False]),
description="Boolean flag for fixing pump power directly.",
doc="""Indicates whether pump power should be fixed by the user or not.
**default** - True.
**Valid values:** {
**True** - pump power (variable name "electricity") will be fixed by user and lift_height will not be fixed,
**False** - pump power (variable name "electricity") is left unfixed and lift_height will be fixed,}""",
),
)
[docs] def build(self):
super().build()
self._tech_type = "water_pumping_station"
build_pt(self)
# create electricity variable and add to performance dictionary
_common(self)
self.lift_height = Var(
self.flowsheet().time,
initialize=100,
units=pyunits.feet,
doc="Lift height for pump",
)
self.eta_pump = Var(
self.flowsheet().time,
initialize=0.9,
units=pyunits.dimensionless,
doc="Efficiency of pump",
)
self.eta_motor = Var(
self.flowsheet().time,
initialize=0.9,
units=pyunits.dimensionless,
doc="Efficiency of motor",
)
self._fixed_perf_vars.append(self.eta_pump)
self._fixed_perf_vars.append(self.eta_motor)
if not self.config.fix_pump_power:
self._fixed_perf_vars.append(self.lift_height)
else:
self._fixed_perf_vars.append(self.electricity)
@self.Constraint(
self.flowsheet().time,
doc="Constraint for electricity consumption based on " "pump flowrate.",
)
def electricity_consumption(b, t):
A = (
3960
* pyunits.gallon
* pyunits.foot
/ pyunits.minute
/ pyunits.horsepower
)
return b.electricity[t] == pyunits.convert(
b.properties[t].flow_vol
* b.lift_height[t]
/ (A * b.eta_pump[t] * b.eta_motor[t]),
to_units=pyunits.kW,
)