User-built Multipliers

Next, we will show that a practical circuit can be synthesized by describing hardware organization in SFL and using the basic synthesis mechanisms mentioned above. As there are no operators for add, multiply or shift in SFL syntax, an adder, multiplier and barrel shifter must be described in SFL at least once. Of course, the user can easily refer to these descriptions by name. Therefore, SFL can be used as if it had many built-in operators. 

SuperPro Designer estimates equipment cost using built-in cost correlations that are based on data derived from a number of vendors and literature sources. In addition, users have the flexibility to enter their own data and correlations for equipment cost estimation. The fixed capital investment is estimated based on equipment cost using various multipliers, some of which are equipment specific (e.g., installation cost) while others are plant specific (e.g., cost of piping, buildings, etc.). This approach is described in detail in the literatrue [6,142]. The rest of this section provides a summary of the cost analysis results for this example process. Table 15.2 shows the key economic evaluation results for this project. Key assumptions for the economic evaluations include 1) a new production suite will be built and dedicated to the manufacturing of this product 2) the entire direct fixed capital is depreciated linearly over a period of twelve years 3) the project lifetime is 15 years, and 4) 27,000 kg of final product is produced per year. 

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