Tank Size for Reserve Operation

Objective This module will calculate the tank size to operate a pneumatic system a given number of cycles after failure of the compressed air supply.

Required Data Time to Extend, Demand Flow Extend, Maximum Tank Pressure Available, Time to Retract, Demand Flow Retract, Minimum Tank Pressure, and Number of Cycles Required.

Input Item Descriptions

Time to Extend (sec) - The time for the cylinder to fully extend (duration of the demand flow extend). Demand Flow Extend (SCFM)/(nl/m) - The flow rate during the extend stroke. Maximum Tank Pressure (PSIG)/(Bars) - The maximum pressure that the tank will be charged to. Number of Cycles Required - The number of cycles the component or system being evaluated must operate from the reserve pressure in tank. Time to Retract (sec) - The time for the cylinder to fully retract (duration of the demand flow retract). Demand Flow Retract (SCFM)/(nl/m) - The flow rate during the retract stroke. Minimum Operating Pressure (PSIG)/(Bars) - The minimum pressure at which the component or system will operate properly.

Calculated Item Descriptions

Max. Operating Delta P (PSI)/(Bar) - The maximum pressure differential across the tank for proper operation. This is the maximum tank pressure minus minimum operating pressure. Tank Size (gal)/(Liters) - The required tank size in Gallons or Liters. Tank Size (cu. ft)/(cu meters) - The required tank size in cubic feet or cubic meters.