HEAT TRANSFERRING RATE REGULATOR UTILIZING ELECTRIC FIELD ON HIGH-PERFORMANCE BOILING SURFACE

摘要

PURPOSE:To promote and to regulate the heat transfer rate on a high-performance boiling surface,and to make the design of a boiling surface easy and simple, by molding a number of ruggedness on the surface, by providing a mesh electrode which promotes boiling in the face of a high-performance boiling surface, and by applying high voltage across the boiling surface and the mesh electrode. CONSTITUTION:A mesh electrode 12 consisting of conductive fine wire 11 is provided in the face of a high-performance boiling surface 1 having a slight gap between them. Being the boiling surface 1 as an electrode on one side, high voltage is applied across the surface 1 and the electrode 12. In the part A under the fine wire 11 of an electrode 12 on the boiling surface 1, bubbles 4 are forcibly taken away from the surface 1 by an electric field, and foaming is promoted as shown by foamed bubbles 5 in the figure. While in the part B except the under part A, fluid drips down spontaneously as shown by arrow signs M. The heat transferring rate on the boiling surface 1 can be arbitrarily regulated, since the boiling surface 1 can artificially be divided by the electrode 12 into the part A for foamed bubbles 5 and the part M along which fluid will spontaneously drip down. The heat transferring rate also can be controlled by changing the promoting rate of foaming by making the applying voltage variable.