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The following offers an overview of the basic components that make up the model package. Basic Components of the Model
1. Master Data Input Form The Master Data Input Form allows the user to input a series of values for various parameters that have been determined to materially affect the capital and O&M costs of the desalination facility. The Master Data Input Form has been designed for a user with little or no requisite knowledge of the desalination process or its economic components. The following is a list of the parameters that require input values on the Master Data Input Form:
2. Advanced Input Form The Advanced Input Form is designed for a user with a significant understanding of the desalination process and the economic influences on capital, O&M and life cycle costs. The Advanced Input Form allows the user to customize 38 different default settings and assumptions made throughout the model calculations. The Advanced Input Form effectively allows experienced water planners and engineers to create their own uniquely customized cost models using the WRA model as a template. 3. Capital Cost Outputs The Capital Cost Outputs page displays the total up-front cost of all individual facility components based on the values entered on the Master Data Input Form, and any default values customized on the Advance Inputs Form. The Capital Cost Outputs page also displays the total overall capital cost of the project including a contingency percentage that can easily be adjusted using the Advance Inputs Form. The following is a list of the capital costs displayed on the Capital Cost Outputs page:
4. O&M Cost Outputs The O&M Cost Outputs page displays the annual operation and maintenance costs calculated as a function of the input values entered on the Master Data Input Form, and any default values customized on the Advance Inputs Form. The O&M Cost Outputs page also displays a total annualized O&M cost calculated based on the interest rate, inflation rate and life cycle period entered on the Master Data Input Form. The following is a list of the annual O&M costs displayed on the O&M Cost Outputs page:
5. Project Summary The Project Summary page displays a listing of the key input parameters and output components that significantly effect the capital and O&M costs for the project. In addition, the Project Summary page displays the life cycle cost for water production. The user has the flexibility to view the life cycle unit cost in $/1000 gallons, $/Acre-feet or $/m^3. 6. Dynamic Chart Gallery The Chart Gallery page displays a series of five charts that allow the user to visualize the relative cost contributions to the desalination facility. A bar graph and pie chart are displayed to show the relative cost contribution of each facility component to the total capital cost. Similarly, a bar graph and pie chart are displayed to show the relative cost contribution of each annual O&M cost to the total annual O&M cost. Finally, a chart is displayed to show the relative cost contribution of both the capital and O&M unit costs to the total life cycle unit cost. 7. Parameter Definitions The Parameter Definitions page displays the definitions of all input parameters and output components used throughout the model. The terms are arranged in alphabetical order for quick reference. The Parameter Definitions page is design so that a user unfamiliar with an input parameter or output component can quickly refer to the definitions to gain a better understanding of the term. For more information about the Reverse Osmosis Desalination Cost Model, contact us through e-mail at info@wraconsultants.com, or by phone at (813) 265-3130. Environmental Services | Water Policy and Planning | Site Development Desalination Services | Conflict Resolution |
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The Reverse Osmosis Desalination Cost Planning Model allows the user the ability to expeditiously analyze a large range of desalination project options to determine cost impacts and "best case" project configurations. The input parameters provided in the Data Input Forms address all significant factors that can affect the cost of the finished desalinated water supply. The model provides the user with output data for capital, O&M and life cycle costs. The user has the ability to quickly compare and test project economics by changing input values for parameters such as source water, product water, concentrate disposal, energy costs, land requirements and financial components.