Enclosed cavity type heat exchanger

Abstract

The invention provides a closed chamber typed heat exchanger, belonging to the heat energy exchange technical field. The closed chamber typed heat exchanger is characterized in that a hole plate is sealed with two ends and the circumference of a cylindrical shell which is horizontally arranged; a cold fluid heat exchange pipe bundle and a hot fluid heat exchange pipe bundle pass through the hole plate and are sealed to form a chamber body; the cold fluid heat exchange pipe bundle and the hot fluid heat exchange pipe bundle are respectively arranged in the upper space and the lower space of the chamber body; a vacuum-shaped closed chamber is filled with working media; the internal chambers of the cold fluid heat exchange pipe bundle and the hot fluid heat exchange pipe bundle are communicated with a cover with a connecting pipe at two ends so as to respectively form an independent fluid passage; an installation supporter is welded externally below the cylindrical shell; the closed chamber of the cylindrical shell can be provided with a plurality of structural types such as single body, double bodies or three bodies; the closed chamber typed heat exchanger has the active effects that the heat exchanger is not a pipe shell typed heat exchanger in traditional meaning and has the advantages of simple structure, fast response, convenient heat control, high heat transmission efficiency and obvious energy-saving effect. The heat exchanger can be applied to heat transmission places with low, middle and high temperature, and is an extremely practical invention.

Description

technical field [0001] It belongs to the technical field of heat energy exchange, specifically a technology related to liquid-liquid heat exchange and internal reaction in tubes. Background technique [0002] At present, as a mature and standardized pressure-bearing heat exchange equipment, the shell-and-tube heat exchanger is used in various fields of industry. However, the existing wall-type heat exchange structure for cold and hot fluids determines that it has the following inherent disadvantages: for liquid-liquid heat exchangers, the heat transfer coefficient of the shell side is usually low, resulting in a low overall heat transfer coefficient. The thermal area will increase the equipment cost; for the shell-and-tube heat exchanger with high pressure on the shell side, due to the large diameter of the shell, the thickness of the shell will increase, which will increase the cost of the heat exchanger; in the field of low-grade energy recovery, Due to the small heat tra...

AI Technical Summary

Problems solved by technology

However, the existing wall-type heat exchange structure for cold and hot fluids determines that it has the following inherent disadvantages: for liquid-liquid heat exchangers, the heat transfer coefficient of the shell side is usually low, resulting in a low overall heat transfer coefficient. The thermal area will increase the equipment cost; for the shell-and-tube heat exchanger with high pressure on the shell side, due to the large diameter of the shell, the thickness of the shell will increase, which will increase the cost of the heat exchanger; in the field of low-grade energy recovery, Due to the small heat transfer temperature difference, the efficiency of the shell-and-tube heat exchanger is even lower; in terms of temperature control, such as: process fluid outlet temperature control and physical or chemical reactions in the heat exchange tube, the traditional shell-and-tube heat exchanger The performance is that the temperature response is lagging, and the control is difficult

In addition, various heat transfer enhancement measures of the existing shell-and-tube heat exchanger have greatly increased its manufacturing difficulty and equipment cost.

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