#################################################################################
# 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/"
#################################################################################
import pyomo.environ as pyo
from ..util import (
register_costing_parameter_block,
make_capital_cost_var,
)
def build_anaerobic_digester_cost_param_block(blk):
# NOTE: costing data are from NREL Waste-to-Energy Model
blk.capital_a_parameter = pyo.Var(
initialize=19.3552312e6,
doc="A parameter for capital cost",
units=pyo.units.USD_2012,
)
blk.capital_b_parameter = pyo.Var(
initialize=0.6,
doc="B parameter for capital cost",
units=pyo.units.dimensionless,
)
blk.reference_flow = pyo.Var(
initialize=911.054,
doc="Reference flow for capital cost",
units=pyo.units.m**3 / pyo.units.hr,
)
[docs]@register_costing_parameter_block(
build_rule=build_anaerobic_digester_cost_param_block,
parameter_block_name="anaerobic_digester",
)
def cost_anaerobic_digester(blk, cost_electricity_flow=True):
"""
Anaerobic digester costing method
"""
cost_anaerobic_digester_capital(
blk,
blk.costing_package.anaerobic_digester.capital_a_parameter,
blk.costing_package.anaerobic_digester.capital_b_parameter,
blk.costing_package.anaerobic_digester.reference_flow,
)
t0 = blk.flowsheet().time.first()
if cost_electricity_flow:
blk.costing_package.cost_flow(
pyo.units.convert(
blk.unit_model.electricity_consumption[t0],
to_units=pyo.units.kW,
),
"electricity",
)
[docs]def cost_anaerobic_digester_capital(
blk, capital_a_parameter, capital_b_parameter, reference_flow
):
"""
Generic function for costing an anaerobic digester system.
"""
make_capital_cost_var(blk)
blk.capital_a_parameter = pyo.Expression(expr=capital_a_parameter)
blk.capital_b_parameter = pyo.Expression(expr=capital_b_parameter)
blk.reference_flow = pyo.Expression(expr=reference_flow)
flow_in = pyo.units.convert(
blk.unit_model.liquid_phase.properties_in[0].flow_vol,
to_units=pyo.units.m**3 / pyo.units.hr,
)
sizing_term = pyo.units.convert(
flow_in / blk.reference_flow, to_units=pyo.units.dimensionless
)
blk.costing_package.add_cost_factor(blk, "TIC")
blk.capital_cost_constraint = pyo.Constraint(
expr=blk.capital_cost
== blk.cost_factor
* pyo.units.convert(
blk.capital_a_parameter * sizing_term**blk.capital_b_parameter,
to_units=blk.costing_package.base_currency,
)
)