Heat transfer modeling in the hot source area of flat micro heat pipe

Abstract

This paper presents a modeling of heat transfer from the vaporization zone to the flat micro heat conductor when used as an additional reservoir of liquid with polysynthetic material. In the study of the intensification of heat transfer to the flat thermal microtubule, it was assumed that the blockage in operation may occur if the thermal transport capacity is exceeded by applying a higher thermal flux on the vaporization area. In this case the internal vapor flow is interrupted as the vaporization and condensation zones reach thermal equilibrium. Practically the vapors no longer condense in the evaporator and no longer perform heat transfer through biphasic thermal transformation. The internal pressure increase in case of accumulation of liquid vapor is not considered in this analysis, it will be the subject of a separate study. The variation of the thermal flow in the cross section on the evaporator and the variation of the liquid flow through the capillary layers in the evaporator shall be analyzed. Heating the vaporization area by thermal conduction causes the movement of the capillary composed of the vaporization area to create liquid vapor. Heat transfer from within the flat micro heat pipe (FMHP) will be performed conventionally by plotting the thermal variation graphs in Mathcad. The overtime temperature variation on the wall of the evaporator in the area of the source with variable thermic flux (external heat source), as well as the propagation of the temperature field, will be achieved by modeling in Matlab.