System and method for cooling using a heat exchanger having a membrane
| DWPI Title: Heat exchange system for cooling using heat exchanger, has graphene oxide membrane which is capable of allowing water to permeate through membrane from first heat exchange fluid stream to add to second heat exchange fluid stream |
| Abstract: A heat exchanger that includes a membrane of graphene oxide is disclosed, as is a heat exchange system employing such a heat exchanger. The heat exchanger permits the use of water from non-traditional sources, such as waste water, brackish and sea water, in a cooling loop. Clean water and sensible heat permeate through the membrane, simultaneously cooling and purifying water in the cooling loop. |
| Use: Heat exchange system for cooling using heat exchanger. |
| Advantage: The strong capillary force is the driving force, rather than vapor pressure, resulting in a greater efficiency in the GO membrane. The primary purpose of the surface condenser in the steam condensation loop is to condense low pressure exhaust steam exiting one or more steam turbines to obtain maximum efficiency and also to convert the turbine exhaust steam into pure water, so as to reuse the steam generator or boiler as boiler feed water. |
| Novelty: The heat exchange system has a heat exchanger which is selected from a shell and tube heat exchanger or a plate and frame heat exchanger. A graphene oxide membrane (102) is joined to the porous support within the heat exchanger. The layers have an interlayer spacing of between about 0.7 nm and 1.1 nm. The heat exchanger is configured to receive a first heat exchange fluid stream at a first temperature flowing in contact with a first side and a second heat exchange fluid stream at a second temperature flowing in contact with a second side. The heat exchanger receives a first heat exchanger fluid stream from a cooling loop. A condenser (120) heats the first heat exchanger fluid stream. The first heat exchange fluid stream is comprised of water and contaminant. The graphene oxide membrane is capable of allowing water to permeate through the graphene oxide membrane from the first heat exchange fluid stream to add to the second heat exchange fluid stream. |
| Filed: 12/19/2013 |
| Application Number: US14134160A |
| Tech ID: SD 12630.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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