|
|
 COST OF COMPRESSED AIR:
- 15% Fixed Charges: Compressor, Installation, Depreciation, Insurance, Repair.
- 15% Operating Charges: Attendance, Lubrication, Cooling-Water, Filters.
- 70% Power: Electric Motor Driven (both energy & demand) at 6 cents/kW hr.
-Facts-
- 20 cents per 1000 CF @ 100 PSIG: 200 HP = 1000 CFM X 60 min. X 24 hr. = $288.00 per day.
- Rule of Thumb: Cost $1.00 per HP per 24 hrs. at 6 cents per kW hour.
- Cost of Air Leakage 1/4" leak = 2,920,000 cu. ft. per month = $684.00.
|
|
Electric Operating Cost Full Load KVa
|
Operating Cost Per Year (8760 hours) at Stated Cost per kWh ($)
|
|
|
|
|
Size HP
|
@1800 RPM
|
.03
|
.04
|
.05
|
.06
|
.07
|
.08
|
.09
|
|
10
|
10.14
|
$ 2,665
|
$ 3,553
|
$ 4,441
|
$ 5,330
|
$ 6,218
|
$ 7,106
|
$ 7,994
|
|
15
|
15.67
|
4,118
|
5,491
|
6,865
|
8,236
|
9,609
|
10,982
|
12,354
|
|
20
|
20.06
|
5,271
|
7,029
|
8,786
|
10,554
|
12,301
|
14,058
|
15,815
|
|
25
|
24.93
|
6,551
|
8,735
|
10,919
|
13,103
|
15,287
|
17,471
|
19,655
|
|
30
|
28.58
|
7,511
|
10,014
|
12,518
|
15,022
|
17,525
|
20,029
|
22,532
|
|
40
|
38.32
|
10,070
|
13,427
|
16,784
|
20,141
|
23,498
|
26,855
|
30,211
|
|
50
|
47.10
|
12,378
|
16,504
|
20,630
|
24,756
|
28,882
|
33,008
|
37,134
|
|
60
|
57.21
|
15,035
|
20,046
|
25,058
|
30,070
|
35,081
|
40,093
|
45,104
|
|
75
|
71.10
|
18,685
|
24,913
|
31,142
|
37,370
|
43,599
|
49,827
|
56,055
|
|
100
|
91.11
|
23,944
|
31,925
|
39,906
|
47,887
|
55,869
|
63,850
|
71,831
|
|
125
|
118.47
|
31,134
|
41,512
|
51,890
|
62,268
|
72,646
|
83,024
|
93,402
|
|
150
|
140.57
|
36,942
|
49,256
|
61,570
|
73,884
|
86,198
|
98,511
|
110,825
|
|
200
|
188.65
|
49,577
|
66,103
|
82,629
|
99,154
|
115,680
|
132,206
|
148,732
|
|
|
|
|
|
