Economic Evaluation Parameters Dialog: Time Valuation Tab

This tab is part of the ‘Economic Evaluation Parameters for Entire Project’ dialog; for more details, see Economic Evaluation Parameters for Entire Project Dialog.

Variable Definitions, Ranges and Default Values

The following table shows a brief description of the variables appearing in this tab. The table also displays their default values and their generally acceptable range:

Variable	Default Value	Range

○ Year of Analysis The reference year for economic analysis calculations; for more details on how this is implemented, see Purchase Cost of Listed Equipment.	Present Year	Positive
○ Year Construction Starts The first year of the project; for more details on how this is implemented, see Cash Flow Analysis.	Present Year	Positive
○ Construction Period (months) The duration of plant construction in months; for more details on how this is implemented, see Cash Flow Analysis.	30	Positive
○ Startup Period (months) The duration of plant startup in months; for more details on how this is implemented, see Cash Flow Analysis.	4	Positive
○ Project Lifetime (years) The expected lifetime of a project in years; for more details on how this is implemented, see Cash Flow Analysis.	15	Positive
○ Inflation (%) The annual inflation rate; for more details on how this is implemented, see Purchase Cost of Listed Equipment.	4	Positive
○ Low NPV Interest (%) A low interest rate that is used to calculate the net present value (NPV) of the project; for more details on how this is implemented, see Net Present Value.	7	Positive
○ Medium NPV Interest (%) A medium interest rate that is used to calculate the net present value (NPV) of the project; for more details on how this is implemented, see Net Present Value.	7	Positive
○ High NPV Interest (%) A high interest rate that is used to calculate the net present value (NPV) of the project; for more details on how this is implemented, see Net Present Value.	7	Positive

Symbol Key: ○ User-specified value (always input); ● Calculated value (always output); ◙ Sometimes input, sometimes output