The cost of ownership of a freeze drying system depends on power costs, refrigeration cooling water costs [maintenance of water quality, or cost of city water], maintenance contract costs, cost of LN2 if that is the refrigerating source, rental of LN2 storage, local labor rates, routine and emergency maintenance costs as well as costs of utilities such as clean steam, water for cleaning in place, gas supply for vacuum release [air or inert gases], amortization, cost of spare parts, and software update cost. These costs also depend upon cycle length, the shorter the cycle the lower the cost per cycle. Other costs are associated with maintenance of documentation, validation, and routine calibration. One may wish also to include the cost for maintenance of clean room conditions inside the clean loading area.
You may make a request that we send you an Excel file for calculating the usage of LN2 Vs mechanical refrigeration by email.
| Freeze drying system | |||||||
| LN2 Refrigeration vs Traditional Refrigeration Cost Analysis | |||||||
| Description | Unit | Quantity | Cost US $ | Description | Unit | Quantity | Cost US$ |
| LN2 REFRIGERATION | TRADITIONAL REFRIGERATION | ||||||
| LN2 Cost | Kg | 1 | $0.15 | Energy Cost | Kw | 1 | $0.08 |
| Running Costs | Running Costs | ||||||
| LN2 Usage in 62 hours Cycle | Kg | 3000 | $450 | Power in Kw Usage in hours Cycle | Kw | 2864.64 | $229 |
| Cycle each Year | Number | 12 | Cycle each Year | Number | 12 | ||
| Chiller system each cycle (70KW) | Kw | Chiller system each cycle (20KW) | Kw | 1280 | $55 | ||
| Chiller system each year | Kw | Chiller system each year | Kw | 15360 | $1,229 | ||
| Total Consumption Year LN2 | Kg | 36000 | $5,400 | Total Consumption Year Refrigeration | $2,750 | ||
| Total Consumption Year Chiller | Kw | Total Consumption Year Chiller | $1,229 | ||||
| Total Running Cost Year Including | $16,200 | Total Running Cost Year | $3,979 | ||||
| Maintenance Cost | Maintenance Cost | ||||||
| Labor Cost | Hours | 1 | $50 | Labor Cost | Hours | 1 | $50 |
| Refrigeration System year | 50 | $2,500 | Refrigeration System year | ||||
| Labor | Hours | Labor | Hours | 200 | $10,000 | ||
| Material | $2,000 | Material | $4,000 | ||||
| Chiller water system | Chiller water system | ||||||
| Labor | Hours | Labor | Hours | 100 | $5,000 | ||
| Material | Material | 1 | $1,500 | ||||
| Emergency Generator | Emergency Generator | ||||||
| Labor | Hours | Labor | Hours | 100 | $5,000 | ||
| Material | Material | 1 | $1,000 | ||||
| Total Maintenance Cost Per Year | $4,500 | Total Maintenance Cost Per Year | $26,500 | ||||
| Capital Cost | Capital Cost | ||||||
| Emergency Generator | Emergency Generator | ||||||
| 10 Year life value 7500$ | $750 | 10 Year life value 75,000$ | $7,500 | ||||
| Compressor | Compressor | ||||||
| 10 Year life value 0 | 10 Year life value 120,000 | $17,142 | |||||
| Water Chiller | Water Chiller | ||||||
| 10 Year life value 0 | 10 Year life value 70,000 | $7,000 | |||||
| Total Capital Cost Per Year | $750 | Total Capital Cost Per Year | $31,642 | ||||
| Total Costs Per Year LN2 | $21,450 | Total Costs Per Year Refrig. | $62,121 |