Energy to Run Machine
Energy costs depend on machine power and gas or electricity rates, together with annual machine uptime.
Machine Power is typically taken from the manufacturer’s specifications. In some cases aPriori estimates the power by analyzing the energy usage of similar machines.
Energy to Run Machine = Annual Energy Usage * Electricity or Gas Rate
Annual Energy Usage = Power * Annual Earned Machine Hours
Power (specified by the machine property Machine Power)
Annual Earned Machine Hours = Work Center Capacity * Machine Uptime Percent
Work Center Capacity = Hours per Shift * Number of Shifts * Working Days per Year
Hours per shift (specified by the VPE variable Hours Per Shift)
Number of shifts (specified by the VPE variable Number Of Shifts)
Working days per year (specified by the VPE variable Working Days Per Year)
Machine Uptime Percent (specified by the machine property Machine Uptime Percent)
Electricity or gas rate (depending on the machine in use—specified by the VPE variable Electricity Rate or Gas Rate)