Boiling Experiments on Vertically Aligned Carbon Nanotubes and Using Surface Micromachined Thin Film Thermocouples (TFT)

Non-linear dynamical analyses of transient surface temperature fluctuations during subcooled pool boiling on a horizontal disk

“…The power supplied is increased in steps of 3 or 5 V and the aforementioned data acquisition procedure is repeated. Further details of the experimental setup, procedure can be found in Ahn et al [17]. Critical heat flux (CHF) condition is reached when the total power supplied to the heater is $300 W. A slight increase in power at this stage results in the surface being covered by a vapor film that in turn results in a significant increase in the wall superheat.…”

“…Furthermore, the minimal thermal inertia and small feature size leads to a reduced distortion of the temperature and velocity fields in its vicinity. Ahn et al [17] used thin film thermocouples to measure the surface temperature fluctuations in film boiling in order to verify the presence of cold spots. Lüttich and others [6,7], recently used micro-machined TFT to estimate the surface temperature and heat flux fluctuations in pool boiling.…”