METHOD OF EFFICIENCYLY ENHANCING CONDENSATION HEAT TRANSFER

摘要

PURPOSE:To improve the condensation heat transfer rate to miniaturize a condenser by adding a high magnetic field generated by a superconductive magnet to a conventional practice where the condensation heat transfer is performed by EHD method so that a film of condensation liquid may be accelerated and thinned with no energy loss. CONSTITUTION:When a high electrical field is applied to a conductive fluid (condensate) 5, a bridging of the condensate 5 is generated between the outer surface of a heat transmission pipe 1 and an electrode 2, allowing an electric current to flow. When a magnetic field is added to such a condition, the condensate 5 is accelerated according to Fleming's law (the direction of acceleration by the magnetic field 7 must be aligned with the direction of flow-down of the condensate 5), and the thickness of condensate film is reduced (the film thickness is inversely proportionate to 1/4 power of the acceleration to the film), improving the condensation heat transfer rate. In this instance, since the magnet to generate the magnetic field 7 is a superconductive magnet 3 comprising superconductive material, the high magnetic field 7 can be generated with no energy loss, and so, the condensation heat transfer can be significantly and efficiently enhanced.