Constant heat flux heaters placed inside the inner tube of the annulus will produce the hot
wall temperatures. Then using thermocouples, the hot wall temperatures will be read into
an Excel spreadsheet. The pressure drop is measured using two digital pressure gauges.
For the large system a heat transfer enhancement for the copper foam was found to
be 1.5 or 50% and for nickel foam was found to be 1.82 or 82%. This caused the hot wall
temperatures to decrease by an average of 71.840F and 100.740F for the copper and
nickel foams, respectively. The pressure drop through the copper foam and nickel foam
remained about the same and was 1 psig for 23 cfm and 3 psig for 45 cfm in comparison
to zero pressure drop for the open channel system. For the small system a heat transfer
enhancement for the copper foam was found to be 1.14 or 14% and for nickel foam was
found to be 1.15 or 15%. The wall temperatures in this system decreased by an average
of 29.040F and 36.040F for the copper and nickel foams respectively. The pressure drop
through the copper foam and nickel foam relative to the open channel is 1.2 psig and 0.8
psig, respectively, for 23 cfm, and for 45 cfm the pressure drop is 2.8 psig and 2.6 psig,
respectively.