**Calculating the Distillate Flow
Rate**

The distillate flow is intermittant. The distillate
receiver fills

with distillate and when the level gets too high,

a pump
comes on to pump out a certain volume of distillate to

get the level back
down.

A graph like this needs to be made with your results in Excel:

The green line shows what the
straight-line-between-each-data-point curve looks like.

The dotted red curve
shows what is really going on.

For this graph, it says that the pump is pumping at a
setting of "1" between 0.33 and 0.67 minutes;

the pump is pumping at a
setting of "2" between 0.67 and 1.0 minutes;

the pump is pumping at a
setting of "3" between 1.00 and 1.33 minutes and

the pump is pumping at a
setting of "4" between 1.33 and 1.67 minutes.

The total volume pumped for this profile was 66 ml of distillate.

If the pump peak setting is "5", the volume is 95 ml ± 3
ml

If the pump peak setting is "4", the volume is 63 ml ± 6
ml

If the pump peak setting is "3", the volume is 35 ml ± 8
ml

If the pump peak setting is "2", the volume is 27.6 ml (uncertainty
unknown)

Using this information and assuming that the pump operates
in a linear flow vs. setting,

you can calculate the volume of distillate over
any period of your experiment.