Nucleate boiling of water in a vertical annulus was
studied. The test section was entirely of stainless steel
construction and was formed by a length of stainless steel
tubing with a stainless steel heater rod centered in it. Two
test sections with length to diameter ratios of 18 and 33...
A study of nucleate boiling of water, four alcohols and
three ethanol-water mixtures was conducted in a vertical
thermosiphon reboiler. The test section consisted of a 1/2-
inch diameter electrically heated stainless-steel rod
jacketed by a 15-inch long pyrex glass tube. Two different
inside diameters of the glass tube corresponding...
This thesis presents a feasibility study of a means to passively effect liquid motion parallel to a heated surface though surface geometrical modifications. Such a passive system is beneficial for electronics cooling applications as it reduces the pumping equipment normally required in flow loops and is desired for space applications,...
Boiling heat transfer is studied for its ability to dissipate high fluxes and achieve heat transfer coefficients two orders of magnitude greater than single-phase heat transfer systems. Heater surface enhancement with increased surface area, varied geometry, wettability contrast and micro/nano-structures can further enhance boiling heat transfer performance through bubble nucleation...
The research presented in this thesis is a continuation of collaboration between Oregon State University and Auburn University studying the feasibility of passively pumping liquid during boiling in a preferential direction using meso-scaled asymmetric surface patterns. Such a passive phase-change mechanism has great potential for thermal management in spacecraft and...