Ratio of change in charge in a system to the change in its electric.
2
Cat Fines are:
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Aluminium and Silicon catalytic fines which can cause abrasive wear.
3
Clarifiers needed modification to ALCAP design because:
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Entrained water could enter from a number of sources.
4
Essentially, an ALCAP Purifier is:
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A Clarifier that removes water.
5
How is water removed from the ALCAP fuel oil separator bowl?
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By ejecting it with solids at discharge or by opening the water drain valve.
6
How many gravity discs are fitted in the ALCAP separator?
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None, but a flow control disc is fitted.
7
Is the measured capacitance of oil higher or lower than that of water?
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Capacitance of oil is lower than that of water.
8
One of the main reasons for the ALCAP purifier was:
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A Clarifier gave better performacne than a well adjusted purifier.
9
The EPC 400 controller is a sophisticated piece of microelectronics. Which of the following statements best describes components and functions to be controlled?
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Fail safe actions of valve actuation and motor stop facility.
10
The Flow control valve:
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Allows a reduced flow of water from the water outlet when the drain valve is opened.
11
The Function of the EPC 400 is:
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To receive input parameter signals and take controlling action.
12
The transducer function is:
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To sense the water content in the oil by difference in dielectric capacity.
13
What are the letters ALCAP understood to stand for?
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Alfa Laval Clarifier and Purifier.
14
What were the key issues which led to the development of the ALCAP separator?
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The oil crisis of 1973 and 1978, along with the increasing demand for distillates.
15
Which of the following are the most important for optimum cleaning efficiency in a centrifugal separator?
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The oil water interface to be positioned outside the disc stack but inside the top disc.
16
Which of the following statements is most accurate?
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Particle separation is best in an ALCAP separator because the interface is always outside the outer edge of the top disc.
17
Which of the following statements is most favourable with regard to achieving the cleanest possible oil?
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An ALCAP separator with accurate temperature control.
18
Why can the interface position be such a problem in the purifier bowl?
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It is very easily affected by changes in density, viscosity temperature and flow.
19
Why was a Clarifier type design preferred over Purifier in designing ALCAP?
Ваш ответ правильный:
Clarifiers were seen to be better at particle removal.