|
ITEM
|
Mechanical
System
|
Liquid
Nitrogen
|
Liquid Carbon
Dioxide System
|
Freezer Capacity &
Production Rate,lb/h |
6,000
|
6,000
|
6,000
|
6,000
|
6,000
|
6.000
|
| No. of Shifts/Day |
1
|
2
|
1
|
2
|
1
|
2
|
| Operating Time - h/yr |
2100
|
4,200
|
2,200
|
4,400
|
2,200
|
4,400
|
Annual Production
Ib/yr x 1000 |
12
|
24
|
12
|
24
|
12
|
24
|
| Freezant Usage: |
|
|
|
|
|
|
| LN2 lb/lb @5cents/Ib |
----
|
----
|
1.5
|
1.5
|
----
|
----
|
| C02 lb/lb @35cents/Ib |
----
|
----
|
----
|
----
|
1.8
|
1.8
|
Total Investment
(installed) |
|
|
|
|
|
|
| Freezer/Refrigeration |
510,000
|
510,000
|
140,000
|
140,000
|
150,000
|
150,000
|
| Operating Cost -$/yr |
|
|
|
|
|
|
| 1.Investment Related |
|
|
|
|
|
|
Fixed Depreciation at 10%
|
51,000
|
51,000
|
14,000
|
14,000
|
15,000
|
15,000
|
Interest12% Simple
(10 year amortized) |
27,030
|
27,030
|
8,400
|
8,4000
|
9,000
|
9,000
|
| Maintenance@4% |
20,400
|
20,400
|
----
|
----
|
----
|
----
|
Maintenance LN2
& LCO2@10% |
---- |
---- |
14,000 |
14,000 |
15,000 |
15,000 |
| 2.Variable Costs |
|
|
|
|
|
|
| Power @ 5cents/kWh |
51,000 |
102,169 |
---- |
---- |
---- |
---- |
| Operator Labor @8.00/h |
16,800 |
33,600 |
16,800 |
33,600 |
16,800 |
33,600 |
| Cleanup Labor @ $41h-15 h/week |
3,200 |
3,200 |
3,200 |
3,200 |
3,200 |
3,200 |
| Freezant Cost -$/yr |
---- |
---- |
900,000 |
1,800,000 |
756,000 |
1,512,000 |
Total Annual
Operating Cost |
165,530 |
232.499 |
956,400 |
1,873,200 |
815,000 |
1,587,800 |
Unit Operating Cost
cents/lb |
1.12 |
0.97 |
7.97 |
7.80 |
6.79 |
6.61 |
| Conversion factors: g/s = lb/h x 0. 126; kg/yr = lb/yr x 0.454; $/kg = cents/lb. x 2.2 |
|
