Ever since I
started studying mechanical engineering I have had a particular interest in
thermodynamics and heat transfer. Consequently, I have greatly enjoyed the
opportunity to develop and pursue my own research into the field. Working on
this research has taught me volumes about heat transfer and research
methodologies that I would not otherwise have experienced. In this regard,
working on this research project has proved an overwhelmingly positive
experience, and I am glad I received this opportunity.This summer, I
have had the unique privilege of undertaking research into lightweight heat
exchangers through an intensive URSP grant.
In particular, my project seeks to
evaluate the potential of a particular material, carbon foam, to serve as an
alternative material for cooling a computer processor. In order to make this
comparison, I have built a simplified case with a 5 square inch channel, inside
of which I can place different heat exchangers on top of a heater assembly that
produces approximately 90 watts of heat at maximum power. I also have two fans
in a push-pull configuration that simulate the case fans found on desktop
computers. In order to test the heat exchangers, I turn on the fans and the
heater and let them run long enough to reach steady-state, or equilibrium,
conditions. I then compare their convection coefficients, a measure of heat
transfer, and the base temperatures they are able to maintain. Higher
convection coefficients and lower base temperatures are desirable, and
indicated better thermal performance. This provides a common methodology for
evaluating the performance of different heatsinks for a given amount of heat
that must be removed to ensure the safe operation of the system. All in all,
this has been a fascinating experience and I recommend for anyone interested in
performing undergraduate research.
