Air-liquid cooling integrated high-efficiency heat exchange tube

Abstract

The invention discloses an air cooling and liquid cooling integrated efficient heat exchange tube. The heat exchange tube comprises an outer sleeve and a core tube coaxially arranged in the outer sleeve, and accordingly a high-temperature fluid region is formed, wherein the high-temperature fluid region is located in the outer sleeve and outside the core tube, and the cross section of the high-temperature fluid region is annular; the core tube is used for conveying low-temperature cold carrier media, and the high-temperature fluid region is used for conveying high-temperature high-viscosity fluid to be cooled. The core tube is further sleeved with a spiral diameter-variable spring, the inner side of the minimum-diameter position of the diameter-variable spring makes contact with the outerwall of the core tube, and the outer side of the maximum-diameter position of the diameter-variable spring makes contact with the inner wall of the outer sleeve. Through the outer sleeve, the high-temperature high-viscosity fluid is subjected to air cooling, and subjected to liquid cooling through the low-temperature cold carrier media in the core tube, air cooling and liquid cooling integrated heat exchange is realized, accordingly, the temperature of the high-viscosity fluid is rapidly decreased, the size of heat exchange equipment is remarkably reduced, and occupied space is shrunk.

Description

technical field [0001] The invention relates to an air-liquid cooling integrated high-efficiency heat exchange tube, which is widely used in the industrial fields of environment, energy, power, petrochemical and the like. Background technique [0002] The disadvantage of conventional oil coolers is that the thermal resistance on the oil side is relatively large, and the heat transfer area needs to be increased to achieve the expected heat transfer. If the flow rate is increased blindly, the increase in the heat transfer coefficient is limited and the resistance drop caused by the high viscosity fluid is too large. [0003] Document "Experimental study on the pressure drop and heat transfer characteristics of tubes with internal wave-like longitudinal fins" (author: YuB, Nie J H, Tao WQ, Tao WQ, publication source: "Heat and Transfer", 1999, 35 (1) : 65-73) and the literature "Pressure drop and heat transfer characteristics of turbulent flow in annual tubes with internal wav...

AI Technical Summary

Problems solved by technology

[0004] It can be seen that the heat exchange device in the prior art is difficult to meet the demand for rapid cooling of high-viscosity fluid

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