Meso and microscale two-phase flow heat transport involves devices that are used to remove heat from small surface areas by circulating a working fluid through the heated space and causing phase change from liquid to vapor. There is an impetus to develop such devices for applications that require compact thermal management systems. The active, mesoscale two-phase flow heat transport device presented in this paper is driven solely by electrohydrodynamic (EHD) conduction pumping, and its heat transport characteristics are provided. An important understanding of the EHD conduction pump performance under a two-phase system versus single-phase system is also elucidated from these results. In addition, the ability to generate reliable low mass fluxes by this method has also allowed for determining local in-tube flow boiling heat transfer coefficient as a function of vapor quality in a mesoscale circular tube evaporator, providing limited but valuable information currently unavailable in the literature.

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