PEM vs Temperature Science Fair Projects

Horizontal Wind Turbine Science Fair Experiments Kit	Wind Turbine Science Fair Projects	Picoturbine Windmill V2 Plus	Renewable Energy Solar Science Fair Kits	Horizon Fuel Cell Car Experiments Science Kit
Age 12 thru College	Ages 12 and College	Age 11 and up	Ages 10 and up	Ages 8 thru up

Vasco
Grade 11

Objectives/Goals

My hypothesis was: If the temperature of a proton exchange membrane (PEM) hydrogen fuel cell were increased in the range of 9°C to 40°C, then electrical output in voltage (as a measure of efficiency) would increase as well (a direct relationship).

Methods/Materials

A PEM separates the protons and electrons in hydrogen atoms, freeing the electrons to travel via a circuit generating electricity for electromagnetic applications, emitting no waste or by-products other than heat and water vapor.

For the experiment, the fuel cell was stored in the freezer until its temperature dropped to 9°C. A hydrogen tank was attached to the fuel cell and a multimeter was attached to the electrodes on the fuel cell, displaying the voltage. I recorded the voltage for each degree as the temperature rose from 9°C to room temperature (23°C). I then used a blow dryer to increase the temperature to 40°C and recorded the voltage for each degree as the temperature decreased from 40°C to room temperature (23°C).

Results

My hypothesis was refuted. My results displayed an indirect linear relationship.

Conclusions/Discussion

I found the 9°C to be the optimum temperature for maximum efficiency. Electrical applications using fuel cells would not be running at optimal efficiency at room temperature. 3rd party site: http://www.usc.edu/CSSF/History/2005/Panels/S0712.pdf