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Background

Engineers are often faced with oxygen concentrators of unknown quality. This device should allow the engineer to quickly determine if the device is producing concentrated oxygen (perhaps greater than 80% or 90%) without using electricity (batteries, etc). An ideal device would allow a crude (within 20%) estimate of the oxygen concentration. The designer can assume access to elements often found in hospitals (CO2 absorbing material, matches etc).

Past work

A team has designed a system based on the burning time of match, coke bottles and a lump of clay. However, the system is a bit hard to read and needs to be calibrated for every size of coke bottle. Is there a way to calibrate the device based on the volume of the coke bottle? Can it be made easier to read?

Contact

if interested, contact Syrone Liu, (syrone.liu at duke.edu)