ProcessWaterCenter

class ProcessWaterCenter(ID='', ins=None, outs=(), thermo=None, **kwargs)

Create a ProcessWaterCenter object that takes care of balancing the amount of make-up process and reverse osmosis (RO) -grade water required for the process. The capital cost and power are based on the flow rate of process and make-up water as given in[1]_.

Parameters:

• ins (AbstractStream], optional) –

  [0] Recycled RO-grade water.

  [1] Make-up RO-grade water.

  [2] Recycled process water.

  [3] Make-up process water.

• outs (AbstractStream], optional) –

  [0] RO-grade water.

  [1] Process water.

  [2] Excess water.

• makeup_water_streams (List[Stream], optional) – All inlet RO-grade water streams. Defaults to boiler and cooling tower make-up water streams at run time.

• process_water_streams (List[Stream], optional) – All inlet process water streams (excluding makeup water streams). Defaults to all fresh process water streams within the system at run time.

• reverse_osmosis_water_price (float, optional) – Defaults to 5.6e-4 USD/kg.

• process_water_price (float, optional) – Defaults to 2.7e-4 USD/kg.

Notes

Default prices for the RO-grade and process water are 0.56 and 0.27 USD/m3 as given in Table 17.1 of [2].

References

[1]

Humbird, D., Davis, R., Tao, L., Kinchin, C., Hsu, D., Aden, A., Dudgeon, D. (2011). Process Design and Economics for Biochemical Conversion of Lignocellulosic Biomass to Ethanol: Dilute-Acid Pretreatment and Enzymatic Hydrolysis of Corn Stover (No. NREL/TP-5100-47764, 1013269). https://doi.org/10.2172/1013269

[2]

Seider, W. D., Lewin, D. R., Seader, J. D., Widagdo, S., Gani, R., & Ng, M. K. (2017). Product and Process Design Principles. Wiley. Cost Accounting and Capital Cost Estimation (Chapter 16)

property reverse_osmosis_water_price

[Float] Price of reverse osmosis-grade water, same as bst.stream_utility_prices[‘Reverse osmosis water’].

property process_water_price

[Float] Price of process water, same as bst.stream_utility_prices[‘Process water’].

line: str = 'Process water center'

class-attribute Name denoting the type of Unit class. Defaults to the class name of the first child class