Latest revision as of 21:22, 29 October 2008

Goals for this week

Finish building remainder of chambers to bring us up to a total of 9 working fuel cells
Configure Kiethley/LabVIEW to support measurement from 9 fuel cells
Run test with 9 identical wt chambers to test for reproducibility of results
- Use argon instead of nitrogen on anode side

Clean and re-build fuel cells in preparation for experiment
- Reused cathodes, but replaced Nafion membrane and anode
Placed built fuel cells under UV light to prevent contamination

Variance Test with Shaking

What we did:

-Tested how much variance existed among chambers by running 9 parallel chambers with wt Shewie

-Switched nitrogen gas with argon gas on the anode side

-Shook chamber 1 manually to see the effect of shaking on current production

Results:

-Current production range was between 50-75 microAmps

-Red line (wt w/ shaking) went up to 500 microAmps when shaking vigorously

-Shows that shaking directly affects current production

-Therefore, amount of gas bubbling directly affects current production

- Possible to use this as direct test for computer interface

@@ Line 10: / Line 10: @@
 * Placed built fuel cells under UV light to prevent contamination
-=Wednesday: July 30, 2008=
-=Thursday: July 31, 2008=
-=Friday: August 1, 2008=
 [[Image:shaking.jpg | 600px]]
@@ Line 36: / Line 31: @@
 :-Shows that shaking directly affects current production
+:-Therefore, amount of gas bubbling directly affects current production
+- Possible to use this as direct test for computer interface