Novel plate-fin type heat exchanger fin
A plate-fin heat exchanger and fin technology, applied in the field of fin structure, can solve the problems of large pressure drop and small heat transfer coefficient, and achieve the effects of reducing weight, improving heat transfer performance and saving materials
Inactive Publication Date: 2014-08-20
TIANJIN UNIV
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Problems solved by technology
Among them, the pressure drop of straight fins is small, but the heat transfer coefficient is also small; the heat transfer coefficient of corrugated fins and staggered serrated fins is large, but the pressure drop is large
Method used
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specific Embodiment
[0013] The form of the fins is corrugated fins with slots, and the slots are slotted in units of half a unit wave, and the fluid can flow through the slots.
[0014] The wavelength of each unit wave is d2 = 15mm.
[0015] The amplitude of the unit wave is A=2.0mm.
[0016] The pitch of the fins is s=6mm.
[0017] The thickness d1 of the fins is 0.5 mm; the height h of the fins is 9.5 mm.
[0018] Compared with conventional continuous corrugated fins with the same fin thickness, height, unit wavelength, wave amplitude and pitch, this embodiment can increase the heat transfer coefficient by 10-20% and reduce the fin weight when the same pressure drop level is reached. 5% or more.
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The invention discloses a novel plate-fin type heat exchanger fin. The novel plate-fin type heat exchanger fin comprises corrugated fins, wherein the corrugated fins are slotted and are broken at the positions of half unit wavelength. The novel plate-fin type heat exchanger fin has the advantages of having the advantages of both the corrugated fins and slotted fins. Gaps exist, fluid can pass through the gaps in the heat exchange process, and runners are almost in a corrugated type, so that compared with the slotted fins and the corrugated fins separately, the novel plate-fin type heat exchanger fin has the advantages that the flowing mode is more turbulent, the intensity of turbulent flow is increased, a heat exchange boundary layer can be destroyed effectively, the heat exchange performance of a heat exchanger is improved greatly, materials are saved, and weight of the heat exchanger is decreased.
Description
technical field [0001] The invention relates to the technical field of heat exchangers, in particular to a fin structure of the heat exchanger. Background technique [0002] The plate-fin heat exchanger is considered to be one of the most promising new heat exchange equipment because of its compact structure, light weight and high heat transfer efficiency. With the improvement of non-ferrous metal and stainless steel anti-corrosion treatment technology and brazing technology, it has been widely used in petrochemical, aviation, automobile manufacturing, power machinery, air separation equipment, deep and low temperature fields and other industrial sectors in recent years, especially in It is widely used in construction machinery industry. Although the heat transfer performance of the plate-fin heat exchanger has been recognized by people, people have never given up the pursuit of a heat exchanger with better heat transfer performance. The development of new and efficient fi...
Claims
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IPC IPC(8): F28F3/02
Inventor 李晓宁舒歌群李团兵田华王轩
Owner TIANJIN UNIV