|
COST COMPARISON OF AIR DRYERS
INITIAL COST, OPERATIONAL COST & POWER CONSUMPTION
(ON 24 HRS./365 DAYS IN
A YEAR BASIS)
|
|
Type of Dryer |
H.O.C. |
Heatless |
Refrigerated |
B.H.R. |
|
1 |
Capacity |
1000CFM |
1000CFM |
1000CFM |
1000CFM |
|
2 |
Dew Point at Atm. Pressure |
(-)40șC. |
(-)40șC. |
(-)20șC. |
(-)40șC. |
|
3 |
Working Pressure |
7
Kg/Cm2(g) |
7
Kg/Cm2(g) |
7
Kg/Cm2(g) |
7
Kg/Cm2(g) |
|
4 |
Inlet Temperature |
120șC.
(Min) |
40șC. |
40șC. |
40șC. |
|
5 |
Life of Desiccant |
4-5
years |
4-5
years |
N.A. |
4-5
years |
|
6 |
After Cooler for reducing
Temp. at inlet of Dryer to |
Not
required |
Required (Extra
Price) |
Required (Extra
Price) |
Required (Extra
Price) |
|
7 |
Purge Loss% |
Nil |
12% |
Nil |
Nil |
|
8 |
Connected Load KW |
0.25 |
0.1 |
3.17 |
33.7 |
|
9 |
Power consumption Per Day
(KWH/Day) |
|
|
|
|
|
|
i) For Dryer KWH |
6.0 |
2.4 |
76.08 |
508.52 |
|
|
ii) In purge Loss (KWH) |
Nil |
257.8(consider
250HP Motor) 12%
of 250HP =22.38KW, for 24
Hrs.=22.38x24=537.12KW |
Nil |
Nil |
|
10 |
Total Power Consumption/Day
(24 Hrs.) KWH, Sl. No. 10 (i)+(ii) |
6.0 |
539.52 |
76.08 |
508.52 |
|
11 |
Operational Cost Per Day @
Rs. 5/- per Unit. |
Rs.
30/- |
Rs.
2697.60 |
Rs.
380.40 |
Rs.
2542.60 |
|
12 |
Operational Cost Per Year
(365 Days) |
Rs.
10950/- |
Rs.
984624/- |
Rs.138846/- |
Rs.928049/- |
|
13 |
(a)
Savings in operational cost in one year with HOC as compared to Heatless
Dryer |
Rs. 9,73,674/- |
|||
|
|
(b)
Savings
in operational cost in one year with HOC as compared to Refrigerated
Dryer |
Rs. 1,27,896/- |
|||
|
|
(c)
Saving in operational cost in one year with HOC as compared to BHR Dryer |
Rs. 9,17,099/- |
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