C-4. Design for lowest system cost
Design drive system for the four conveyors with different speeds (the same power).
Given parameters:
- No overloads
- Duty - 100% (uninterruptable operation)
- Location/environment – clean room
- Grid - 690 V
- Cooling water not available
- Speeds and torques according to the table:
| Case | speed, rpm | torque, kNm |
|---|---|---|
| 1 | 100...500 | 10 |
| 2 | 300...500 | 10 |
| 3 | 20...100 | 50 |
| 4 | 70...100 | 50 |
Design for: lowest investment cost (CAPEX). Assume energy efficiency is not important. Present total system efficiency at 100% load, 50% load