An enhanced convection heat transfer device
A technology of convective heat transfer and first fluid, applied in the direction of indirect heat exchangers, heat exchanger types, heat exchange equipment, etc., can solve the problem of low heat conduction and heat transfer efficiency, hinder convective heat transfer, and increase convective heat transfer Resistance and other issues
Active Publication Date: 2021-04-09
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology
When the fluid flows through the pipes used for heat exchange in the prior art, a thermal boundary layer and a "dead water" area (an area where the fluid flows slowly) will be formed, thereby increasing the convective heat transfer resistance, hindering convective heat transfer, and heat conduction Heat transfer efficiency is not high
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[0038] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0039] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may be another element in between. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or it may be present interveni...
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The invention discloses a device for enhancing convection heat transfer, which comprises: a base pipe extending along a first direction; the base pipe is a rigid base pipe; The outside is used for the flow of the second fluid, and the first fluid and the second fluid can transfer heat through the tube wall of the base pipe; a flow surface and a backflow surface facing away from the flow facing surface; fins extending along a second direction; the fins have a connection end and a free end along the second direction, and the connection end is fixedly connected to the The back flow surface of the base pipe; the surface of the fins is parallel to the first direction; the fins are elastic fins. The invention provides an enhanced convection heat transfer device, which can improve the convection heat transfer efficiency.
Description
technical field [0001] The invention relates to the technical field of pipe heat exchange, in particular to an enhanced convection heat transfer device. Background technique [0002] In many industrial fields such as petroleum, chemical industry, refrigeration, electric power, etc., a large number of heat exchange devices are needed to realize the transfer of heat between cold and hot fluid media to achieve the purpose of heating or cooling (heat dissipation). In the heat transfer process of the heat exchanger, the convective heat transfer resistance between the solid wall and the fluid is usually much greater than the heat conduction resistance in the solid wall. In the heat exchange process, inefficient convective heat transfer is the main cause of reduced heat flow and inefficient heat transfer. Therefore, enhancing convective heat transfer is the key to improving the efficiency of heat exchangers. [0003] When studying the problem of convective heat transfer, the temp...
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IPC IPC(8): F28D1/047F28F1/24
CPCF28D1/047F28F1/24
Inventor 孙旭叶泽华李文欣
Owner CHINA UNIV OF PETROLEUM (BEIJING)