Tube shell type pulsating heat pipe heat exchanger

Abstract

The invention discloses a tube shell type pulsating heat pipe heat exchanger, which comprises a shell pass, a tube pass, a sealing flange and a sealing head, wherein the sealing flange and the sealing head are arranged at the two ends of the shell pass; the tube pass is arranged in the shell pass and is divided into vertically communicated return fluid passages by a middle partition plate; a sealing flange and a sealing head at the two ends of the tube pass are fixed and hermetically connected with flange rings at the two ends of the shell pass; pulsating heat pipes are arranged on the tube pass and the shell pass; condensation sections of the pulsating heat pipes are positioned in the shell pass; and evaporation sections of the pulsating heat pipes are positioned in the tube pass. According to the tube shell type pulsating heat pipe heat exchanger, the pulsating heat pipes are inserted into the tube shell type heat exchanger in groups, so that the heat exchange space is fully utilized; and a corresponding heat pipe working medium is selected according to the size of a heat flow in a frictional heat exchange process, so that gradient utilization of energy is realized. In addition, the tube shell type pulsating heat pipe heat exchanger can be arranged in any direction and has the advantages of compact structure, small size, simple manufacturing process, convenience for assembly, disassembly and maintenance, no need of an external pump for driving flow, safety in use and excellent application prospect.

Description

technical field [0001] The invention relates to a heat exchange device, in particular to a shell-and-tube pulsating heat pipe heat exchanger designed for high-efficiency cascade utilization of energy. technical background [0002] With the rapid development of the economy, the problem of energy shortage and waste is becoming more and more serious. It is of great engineering significance to adopt active and effective energy-saving and emission-reduction measures for various industrial links involving energy consumption. Shell-and-tube heat exchangers are widely used in various industrial fields such as petrochemical, electric power, environmental protection, and energy due to their advantages of high reliability, compact structure, and simple fabrication. Therefore, optimizing the design or improving the structure of the shell-and-tube heat exchanger to improve its heat exchange efficiency is an important measure for energy saving and emission reduction. [0003] A heat pipe...

AI Technical Summary

Problems solved by technology

However, capillary wicks are processed on the inner wall of capillary heat pipes, the manufacturing process is relatively complicated, and the size and weight of heat pipes are large. Although gravity heat pipes do not require liquid-absorbing wicks, the working fluid in the condensation section must rely on gravity to assist backflow to the evaporation section to achieve circulation. When working horizontally or against the direction of gravity, the heat transfer performance of the heat pipe will be greatly reduced or even fail

Therefore, although this type of shell-and-tube heat pipe heat exchanger has high heat exchange efficiency, it has problems such as complicated manufacturing process, poor flexibility of use, and inappropriate arrangement along the direction of gravity. Therefore, its application and promotion are limited.

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