Cost of Ownership

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