Centrifugal Fan: Equipment Tab

Variable Definitions, Ranges and Default Values

The following table shows the meaning of the variables appearing in this tab, as well as their default values and their generally acceptable range. Note that due to the manner by which the variables are used by the sizing and costing equations, the range of acceptable values may be further reduced.

Variable	Default Value	Range

◙ Rated Throughput The total rated volumetric throughput.	0.0 L/h	Positive
◙ Max Throughput The maximum volumetric throughput that a unit of this type is available for purchase in the market.	720000000.0 L/h	Positive

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

Sizing: Design Mode

In Calculate (Design Mode), the user specifies the Maximum Throughput and the system computes the Number of Units and the Rated Throughput. The system calculates the number of parallel units by comparing the operating throughput with the maximum throughput. The operating throughput is equal to the volumetric flowrate of the input stream (under input stream conditions).

Sizing: Rating Mode

In User-Defined (Rating Mode), the user specifies the Number of Units and the Rated Throughput of each unit and the system calculates the operating throughput and warns the user if its value exceeds the rated throughput.

Costing

Equipment purchase cost is based on the rated throughput and material of construction. It is supplied by the built-in model assuming as material of construction CS.

For more information on this equipment, see Centrifugal Fan

For information on the left-hand side variables and options, see Equipment Data Dialog: Equipment tab.