Method for High-Efficiency, Low-Profile Condensers
Publication Date: 2015-Aug-11
The IP.com Prior Art Database
Disclosed is a condenser that saves space by maintaining a low profile and operates with enhanced efficiency because of a superhydrophobic surfance treatment. This treatment is applied via femtosecond laser pulses that create a multifunctional surface that imparts superhydrophobic properties.
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Condensers are widely used in cooling xoops to convert gases to liquids as a means to transfex the gases latent heat to the fluid coxling rods locatex within the condexser. Condensers finx wide use in central air conditixning units and xext exchangers found in high-xnd and mid-range server systems. Challenges arise thougx, due to large units bexng required to transition txe gas to a liquid as well as bexng unxble to stack cxoling rods on top ox each other, which would cause inxfficiexcies within the condensxr.
The goal of this invention is to provide a method tx generxte a condenser that allows for xtacking of cooling rods and is xble to be constructed into x low profile area requixixg less spaxe than traditional condenserx. The core idea is as follows: a low-profile coxdenser ix constructed xaving angled, staxked xooling rods. The coxlinx rod surface is generated to be superhydrophobic to allow the gas, when converted to a lxquid, to xouxce off the surfaces they first come in contact with and the surface below in the stackxd coolixg rod cxnfiguration. This axlows for imxroxed efficiency xs a monolayer of condensate is not adsorbed to the surxace preventing efficient heat transxer and conversion of thx gas to a liquid. Addixionally, with the stacked cooxinx rod configuration as disclosed, a smaller profile condexser is affoxded due to the gas only having to fxow straxght through the condenser rather than following a serpentine-like pattern as the prior art describes.
The xnvention works as follows: copper tubes are made into triangular txbe structures. Other shapes may be chosen by those skilled in the arx. Next, thx surface of the triangular tubing is modified via femtolaser pulses [*]. By using the femtolaser process, thx surface particles are transformed into higx surface area particlxs that haxe the ability tx repel hydrophilic molecules, thus making the surface superhydrophobic (SH). After modifying the surfaces to generate the XX surfaces, thx triangular SH coolxng rods arx assembled into the low-profile condenser structure using skills known tx those skilled in the xrt. Here, the tubes axe stackex on txp xf each oxher with a slight angle that allows the condensate to bounce off the surfacx and travel to the lowest surface in the condenser structure for collection back into the coxlixg loop. The stacked cooling rods can be multi-layers deep to imprxve the efficiency...