Adjustable reciprocating pulsating flow reinforced heat transfer heat exchanger

Abstract

The invention relates to an adjustable reciprocating pulsating flow reinforced heat transfer heat exchanger, which comprises a shell, end enclosures, tube plates and a heat exchange pipe, wherein two ends of the shell are respectively connected with the end enclosures on two sides by the tube plates, and the inlet ends of the heat exchange pipe are fixed on the tube plates. The heat exchanger is characterized in that the tube pass inlet of the end enclosure on one side is connected with a reciprocating pulsating flow generating device, and the amplitude and the frequency of the reciprocating pulsating flow generating device are adjusted by adjusting the rotating speed of the device and the flow rate of a branch where the device is located. The heat exchanger has the advantages that 1) the steady-state flow rate is adjusted through an output branch I, an output branch II acquires pulsating flow rate, and the average flow rate, the pulsating frequency and the pulsating amplitude of the pulsating flow in a main path III can be adjusted by adjusting the rotating speed of a motor so as to obtain pulsating flow with research value; and 2) reinforced heat transfer, scale inhibition and scale removal of the conventional heat exchanger can be realized by simply improving the structural form of the heat exchanger, and the heat exchanger is simple in structure and easy to implement.

Description

technical field [0001] The invention relates to a shell-and-tube heat exchanger, in particular to an adjustable reciprocating pulsating flow enhanced heat transfer heat exchanger which utilizes a reciprocating pump to generate pressure pulsating flow to enhance heat transfer. Background technique [0002] In industrial production, due to the needs of heat transfer, exchange, conversion and control, heat exchangers are widely used, among which shell-and-tube heat exchangers are the most commonly used. In order to improve the enhanced heat transfer coefficient, scientific and technological workers at home and abroad have conducted research on inserting swirl elements into the tube, enhancing heat transfer by vibration, enhancing heat transfer by electric field, and changing the shape of the heat exchange tube. This type of strengthening is currently the most widely used structural strengthening technology. The insertion of the swirl element is mainly to insert ribbons and spri...

AI Technical Summary

Problems solved by technology

The pulsating flow generator with the domestic patent number "CN200910060614.8" can only adjust the periodic changes of the fluid, but cannot realize the adjustment of the pulsation amplitude, and the periodic pulsation of the fluid generated by the pulsating flow generating device is not accurate enough

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