Table 5 Overview of the differences between the Potter Spray Tower and Micron Horizontal Track Sprayer for calibration, throughput and cost per tile sprayed
Potter Spray Tower | Micron Horizontal Track Sprayer | |||
|---|---|---|---|---|
Best case | Worst case | |||
Calibration | Frequency of calibration | Every time | Every change in configuration or 6 months | |
Total time for calibration and cleaning (hours) | 3.2 | 4.3 | 4.1 | |
Throughput: Assumption: 1 week of spraying (5 days, 8 h per day, two people), calibration of TS once | Number of calibrations required | 5 | 1 | |
Total time for calibration per week (hours) | 15.8 | 21.7 | 4.1 | |
Total number of work hours per week (hours) | 40 | 40 | ||
Time left for spraying (hours) | 24.2 | 18.3 | 35.9 | |
Number of tiles that can be sprayed per hour 2 min per spray run | 30 | 540 | ||
Total number of tiles that can be sprayed per week | 725 | 550 | 19395 | |
Cost | Cost of two people per week ($20 per hour per person) | $1,600.00 | ||
Cost per tile | $2.21 | $2.91 | $0.08 | |