Heat exchanger consisting of internal and external fin heat exchange tubes
A technology of heat exchange tubes and heat exchangers, which is applied to the types of heat exchangers, indirect heat exchangers, fixed tubular conduit components, etc., can solve the problems of narrow application range and less obvious heat transfer effect, and achieves the manufacturing cost. Low, good operability, easy to install
Inactive Publication Date: 2011-05-04
北京先锋创新科技发展有限公司
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Problems solved by technology
Because it only strengthens the heat transfer area inside the tube, when the outside is also a medium with low thermal conductivity, the heat transfer effect is not obvious, so its scope of application is narrow
Method used
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Embodiment
[0025] Implementation example: In the rectification and separation of methanol-water, the heat exchanger composed of inner and outer finned plate heat exchange tubes disclosed by the present invention is used as the top condenser of the rectification tower. The methanol vapor to be condensed is passed in the heat exchange tube, and the cooling water is passed between the tubes. The inlet water temperature is 35°C, the intake air temperature is 68°C, and the cooled methanol produced is 40°C. Compared with the traditional tube-and-tube heat exchanger, the total heat transfer coefficient is 4 times higher, and the condensation area and cost are reduced by about 1 / 4.
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The invention discloses a heat exchanger consisting of internal and external fin heat exchange tubes, which can be applied to transferring fluid heat in chemical and petrifaction industries such as gas-liquid exchange, liquid-liquid exchange, gas-gas exchange and the like. The heat exchanger consists of a seal head (1), a tube sheet (2), a baffle (3), a shell (4), the internal and external fin heat exchange tubes (5) and the like. The internal and external fin heat exchange tubes (5) consist of tubes (9), internal and external fins and fin support columns (8). The internal and external fins and the fin support columns are in a compactly matching state with internal and external walls of the tubes. The fins consist of a plurality of situations of internal spiral, external spiral, and internal straight fins, external straight fins, and the like. The flow rate of the fluid on the internal and external sides of the tubes is accelerated via the fluid with low heat conductive coefficient on the internal and external sides of the heat exchange tubes so as to improve the heat exchange area to further achieve the aim of improving the heat transfer effect on the internal and external sides of the heat exchange tubes. The heat exchanger has the advantages of high heat exchange efficiency, smaller volume, lower cost and the like.
Description
technical field [0001] The invention relates to a heat exchanger composed of inner and outer fin plate heat exchange tubes, which is mainly composed of a new type of heat exchange tube, which can be applied to fluids in chemical, petrochemical and other industries such as gas-liquid exchange, liquid-liquid exchange, and gas-gas exchange. during heat transfer. Background technique [0002] At present, most of the heat exchangers used in China are tube and tube heat exchangers and spiral plate heat exchangers. Their main feature is that the heat exchange area inside and outside the tube is equal. In this way, when the exchange medium with a large difference in exchange coefficient performs heat exchange inside and outside the tube, due to its imbalance, the ideal exchange purpose cannot be achieved, and the heat exchange efficiency is relatively low. Although there is now a kind of inner-finned heat exchange tube, it adopts the method of increasing the heat exchange area on ...
Claims
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IPC IPC(8): F28D7/00F28D7/16F28F1/42
CPCY02P20/10
Inventor 王宝华
Owner 北京先锋创新科技发展有限公司