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Pump selection based on LCC and Effectiveness Analysis |
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Here we make a comparison between two pumps and determinate who is the proper one base donLCC and Effectiveness analysis. |
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Edwin Castaing _ 2007-2039 |
13/08/2011 |
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Vertical Centrifugal Pump
Vertical centrifugal pumps are also referred to as cantilever pumps. They utilizea unique shaft and bearing support configuration that allows the volute to hang in the sump while the bearings are outside of the sump. This style of pump uses no stuffing box to seal the shaft butinstead utilizes a "throttle Bushing". A common application for this style of pump is in a parts washer.

Given Pump

Characteristics:
* Flow rate: 60 M3/h
* Max. Head: 35mts
* Power:5.5 Kw
Assumptions:
* Price: US$4975 (RD$ 189,547.5)
* Maintenance: 1 time per month

Observed Period and Questions
| Start | End | Up time | Down Time |
Operation | 0.0 | 181.0 | 181.0| |
Failure | 181.0 | 195.0 | | 14.0 |
Operation | 195.0 | 436.0 | 241.0 | |
Failure | 436.0 | 456.0 | | 20.0 |
Operation | 456.0 | 744.0 | 288.0 | |
Failure | 744.0 | 768.0 | | 24.0 |Operation | 768.0 | 1963.0 | 1195.0 | |
Failure | 1963.0 | 1970.0 | | 7.0 |
Operation | 1970.0 | 2235.0 | 265.0 | |
Failure | 2235.0 | 2243.0 | | 8.0 |
Operation | 2243.0 | 3400.0 |1157.0 | |
Failure | 3400.0 | 3405.0 | | 5.0 |
Operation | 3405.0 | 3723.0 | 318.0 | |
Failure | 3723.0 | 3740.0 | | 17.0 |
Operation | 3740.0 | 4305.0 | 565.0 | |
Failure | 4305.0 |4327.0 | | 22.0 |
Operation | 4327.0 | 4803.0 | 476.0 | |
Failure | 4803.0 | 4825.0 | | 22.0 |
Operation | 4825.0 | 5882.0 | 1057.0 | |
Failure | 5882.0 | 5894.0 | | 12.0 |
Operation |5894.0 | 6672.0 | 778.0 | |
Failure | 6672.0 | 6687.0 | | 15.0 |
Operation | 6687.0 | 7677.0 | 990.0 | |
Failure | 7677.0 | 7690.0 | | 13.0 |
| | TOTAL | 7511.0 | 179.0 |
| | No....
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