UV with Advanced Oxidation Processes Costing Method
====================================================

Costing Method Parameters
+++++++++++++++++++++++++

The following parameters are constructed for the unit on the FlowsheetCostingBlock (e.g., `m.fs.costing.uv_aop`) when applying the `cost_uv_aop` costing method in the ``watertap_costing_package``:

.. csv-table::
   :header: "Description", "Symbol", "Parameter Name", "Default Value", "Units"

   "UV replacement factor", ":math:`f`", "``factor_lamp_replacement``", "0.33278", ":math:`\text{dimensionless}`"
   "UV reactor cost", ":math:`C_F`", "``reactor_cost``", "202.346", ":math:`\text{USD}_{2018}\text{/m}^3\text{/hr}`"
   "UV lamps, sleeves, ballasts and sensors cost", ":math:`C_l`", "``lamp_cost``", "235.5", ":math:`\text{USD}_{2018}\text{/kW}`"

Costing Method Variables
++++++++++++++++++++++++

The following variables are used on the unit block (e.g., m.fs.unit.costing) when applying the `cost_uv_aop` costing method in the ``watertap_costing_package``:

.. csv-table::
   :header: "Description", "Symbol", "Variable Name", "Index", "Units"

   "Inlet volumetric flowrate", ":math:`F_{in}`", "``flow_vol``", "[t]", ":math:`\text{m}^3\text{/s}`"
   "Electricity demand", ":math:`E`", "``electricity_demand``", "[t]", ":math:`\text{W}`"

Capital Cost Calculations
+++++++++++++++++++++++++

Capital cost is the sum of the unit reactor cost and lamp cost:

    .. math::

        C_{cap,tot} = C_{cap,reactor}+C_{cap,lamp}

    .. math::

        C_{cap,reactor} = C_F * F_{in}
        C_{cap,lamp} = C_l * E

 
Operating Cost Calculations
+++++++++++++++++++++++++++

Fixed operating cost depends on the electricity demand of lamps, :math:`E`, as shown in the equation below:

    .. math::

        C_{op,tot} = f * C_l * E

Code Documentation
------------------

* :mod:`watertap.costing.unit_models.uv_aop`