Heat exchanger device

Abstract

A heat exchange device is presented, the device comprises one or more channels having inlet and outlet ports configured to direct flow of a predetermined fluid to and from said one or more channels. Said one or more channels of the device comprise at least one channel having at least one orifice of a predetermined hydraulic diameter configured such that a flow of said predetermined fluid through said orifice and through said channel thereby generating a vortex ring-like fashion of the flow within the channel to provide efficient heat transfer by the fluid.

1 . A heat exchange device comprising one or more channels having inlet and outlet ports to direct flow of a predetermined fluid to and from said one or more channels, said one or more channels comprising at least one channel having at least one orifice of a predetermined hydraulic diameter, a flow of said predetermined fluid through said orifice and through said channel thereby generating a vortex ring-like fashion of the flow within the channel. 
     
     
         2 . The heat exchange device of  claim 1 , wherein a hydraulic diameter of said at least one channel is between 100 to 1000 micrometers. 
     
     
         3 . The heat exchange device of  claim 1 , wherein a ratio between a hydraulic diameter of said at least one channel and said predetermined hydraulic diameter of said at least one orifice is selected to be between 1.3 to 1.6. 
     
     
         4 . The heat exchange device of  claim 3 , wherein said ratio between the hydraulic diameter of said at least one channel and said predetermined hydraulic diameter of said at least one orifice in the channel is 1.5. 
     
     
         5 . The heat exchange device of  claim 1 , wherein said one or more channels have a circular or rectangular cross section. 
     
     
         6 . The heat exchange device of  claim 1 , configured to direct compressible flow of a predetermined heat exchange fluid through said at least one channel, passage of said flow through said at least one orifice generating one or more vortex rings thereby providing efficient mixing of fluid portions from periphery of said channel with fluid portions from central region thereof. 
     
     
         7 . The heat exchange device of  claim 1 , wherein said one or more channels are arranged together in one or more layers, at least one of said layers being configured to be in contact with a target element. 
     
     
         8 . (canceled) 
     
     
         9 . The heat exchange device of  claim 7 , comprising a manifold arrangement for directing input heat exchange fluid towards the inlet ports of said one or more channels. 
     
     
         10 . The heat exchange device of  claim 1 , wherein said one or more channels are made of a thermally conductive material composition. 
     
     
         11 . The heat exchange device of  claim 1 , wherein said one or more channels are made of at least one of the following materials: Copper, Aluminum and Stainless steel. 
     
     
         12 . A heat exchange system comprising one or more heat exchange blocks, said heat exchange block comprising a plurality of channels of a predetermined hydraulic diameter, each comprising at least one orifice of a predetermined hydraulic diameter, passage of fluid through said channels and through said orifice therein generating vortex ring downstream of said orifice with respect to a general fluid flow direction through the channel, thereby increasing efficiency of heat exchange by convection of fluid within said channels. 
     
     
         13 . A method for use in heat transfer to and from a target element, the method comprising: providing a compressible laminar flow of a fluid through one or more channels being in contact with said target element, and directing said flow through at least one orifice located near an inlet port of said one or more channels, to thereby generate a vortex ring-like flow, providing high-efficiency heat transfer for a relatively small length of said one or more channels. 
     
     
         14 . The heat exchange device of  claim 6 , wherein the inlet ports of said one or more channels are arranged to face a predetermined direction for fluid input. 
     
     
         15 . The heat exchange device of  claim 7 , comprising a manifold arrangement for directing input heat exchange fluid towards the inlet ports of said one or more channels.