| Cost Comparison - Evaporation vs. Rinse Water Recycling | |||||
| Cells that can be edited: | |||||
| EMC 85E Evaporator | E101 Evaporator | RWR with 1.5 Cu Foot DI Tanks | RWR with 3.0 Cu Foot DI Tanks | Notes | |
| Cycle Data | |||||
| Average Board Load per Batch | 25 | 25 | 25 | 25 | |
| Average Rinse Count per Wash Cycle | 8 | 8 | 8 | 8 | |
| DischargeVolume per Rinse Cycle | 3.5 | 3.5 | 3.5 | 3.5 | |
| Total Discharge per Batch (Gallons) | 28 | 28 | 28 | 28 | |
| Capacity (Gallons) | 85 | 136 | - | - | |
| Evaporation Rate (gph) | 6 | 13 | |||
| Daily Batch Capacity | 3.04 | 4.86 | 11.99 | 11.99 | How many batches before evaporator capacity is reached. Recycler is how many 40 minute cycles can be ran in the daily operational time. |
| Total Board Cleaning Capacity (Daily) | 75.89 | 121.43 | 299.85 | 299.85 | <-- Maximum Capacity per Day (= B7 * B13) |
| Total Board Cleaning Capacity (Monthly) | 1,979.99 | 3,167.98 | 7,822.87 | 7,822.87 | <-- Maximum Capacity per Month (= B14 * B20) |
| Operational Hours | |||||
| Average Daily Operational Hours | 14.16666667 | 10.46153846 | 8 | 8 | Hours required to evaporate the tank capacity |
| Operational Days per Week | 6 | 6 | 6 | 6 | |
| Monthly Operational Days | 26.09 | 26.09 | 26.09 | 26.09 | Formula = (365.25/12)*(B19/7) |
| Monthly Operational Hours | 369.60 | 272.93 | 208.71 | 208.71 | Formula = B18 * B20 |
| Electrical Costs | |||||
| Machine Voltage | 240 | 240 | 110 | 110 | |
| Electrical Phase | 3 | 3 | 1 | 1 | |
| Amps | 40 | 87 | 20 | 20 | |
| Power Factor | 0.85 | 0.85 | 0.85 | 0.85 | 0.85 Power Factor is an estimate for unknown Power Factor ratings. |
| Kilowatts | 16.32 | 35.496 | 3.74 | 3.74 | =(Voltage*Amps*Power Factor*2)/1000 |
| Monthly kWh usage | 6,031.84 | 9,688.07 | 780.59 | 780.59 | = B21 * B28 |
| kWh Rate | $0.134 | $0.134 | $0.134 | $0.134 | According to the Consumer Price Index (CPI), the U.S. Bureau of Labor Statistics states the average price per kWh for the U.S. was $0.134 and $0.153 for Chicago. |
| Monthly kWh Cost | $808.27 | $1,298.20 | $54.64 | $54.64 | |
| Media Exchange | |||||
| Media Life Batches (Real) | 83 | 166 | 3.0 cu Foot is estimated based upon twice the capacity | ||
| Media Life (Days) | 24 | 48 | Adjusted for days of operation | ||
| Estimated Tank Replacements per month | 1.087053571 | 0.543526786 | |||
| Tank Replacement Cost | $700.00 | $750.00 | |||
| Total Tanks | 2 | 2 | |||
| Total Media Exchange Costs | $760.94 | $407.65 | = Tank Replacement Cost * Estimate Tank replacements per month. | ||
| Miscellaneous Costs | |||||
| Sludge Removal (per month) | $50.00 | $50.00 | $0.00 | $0.00 | |
| Overtime Labor Costs | $92.50 | $36.92 | $0.00 | $0.00 | Formula=((B18 - 8)*1.5)* B45 |
| Labor Rate | $10.00 | $10.00 | $10.00 | $10.00 | |
| Total Miscellaneous Costs | $142.50 | $86.92 | $0.00 | $0.00 | |
| Total Costs | |||||
| Total Monthly Cost | $950.77 | $1,385.12 | $815.58 | $462.29 | |
| Cost per PCB (Total Capacity) | $0.48 | $0.44 | $0.10 | $0.06 | |
| Cost per PCB (3,000 board Estimate) | $0.480 | $0.462 | $0.272 | $0.154 | <--based upon estimation of 3,000 PCBs, but keep in mind the EMC is limited in throughput to 3 batches @ 20 boards per batch, per day equalling the monthly amount in B13 |