Combustion waste heat utilization heat exchange device with regular change of circular tube diameter

A heat exchange device and circular tube technology, applied in indirect heat exchangers, heat exchanger types, heat exchange equipment, etc., can solve the problems of poor high temperature resistance, low heat exchange efficiency, and large volume, and reduce the volume. The effect of reducing weight, improving heat exchange efficiency, and occupying less space

Inactive Publication Date: 2019-03-15
CHINA NORTH VEHICLE RES INST
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of low heat exchange efficiency, large weight, large occupied volume, and poor high temperature resistance of existing waste heat utilization heat exchange devices, and propose a compact structure, high temperature resistance, high power density, and high heat exchange efficiency. heat exchange device

Method used

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  • Combustion waste heat utilization heat exchange device with regular change of circular tube diameter
  • Combustion waste heat utilization heat exchange device with regular change of circular tube diameter
  • Combustion waste heat utilization heat exchange device with regular change of circular tube diameter

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Embodiment Construction

[0049] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0050] In this article, if there is no special explanation, when it comes to formulas, " / " means division, and "×" and "*" mean multiplication.

[0051] like Figure 1-6 The shown exhaust gas waste heat utilization heat exchange device includes a heat exchange core 1, a front support 2 of the heat exchange core, and a rear support 3 of the heat exchange core. The heat exchange core 1, the front support 2 and the The rear support body 3 is arranged in the exhaust gas flue 12. The heat exchange core 1 includes an upper cover plate 36, a lower cover plate 40 and a plurality of heat exchange tubes, and the heat exchange tubes are connected through the upper cover plate 36 and the lower cover plate 40. , the front support body 2 and the rear support body 3 are respectively located at both ends of the heat exchange core body 1, and together wit...

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Abstract

The invention provides a heat exchange device utilizing combustion waste heat. The heat exchange device utilizing combustion waste heat comprises a heat exchange core body which is arranged in a waste gas flue. The heat exchange core body comprises round tubes, and the round tubes are arranged in the direction perpendicular to the waste gas flowing direction; suppose the distance between each round tube and a waste gas inlet is S, the inner diameter of each round tube is D; and suppose D=F(S), F'(S)<0, and F'(S) is the first-order differential coefficient of F(S). According to the heat exchange device, the round heat exchange tubes are adopted by the heat exchange core body, and the diameters of the heat exchange tubes become smaller gradually in the smoke flowing direction so that the probability of film boiling on the water side can be effectively lowered, the heat-convection heat exchange intensity of the water side is increased, the heat load of the heat exchange core body is reduced, and the heat exchange efficiency is improved.

Description

technical field [0001] The invention belongs to the field of heat exchange, and in particular relates to a shell-and-tube heat exchange device for waste heat utilization. Background technique [0002] In the past ten years, due to the shortage of energy sources, with the further development of energy conservation work. A variety of new, energy-saving and advanced furnace types are becoming more and more perfect, and the use of high-quality insulation materials such as new refractory fibers has significantly reduced the heat dissipation loss of the furnace. The advanced combustion device is used to strengthen the combustion, reduce the amount of incomplete combustion, and the air-fuel ratio tends to be reasonable. However, the technology of reducing the heat loss of flue gas and recovering the waste heat of flue gas is still not progressing fast. In order to further improve the thermal efficiency of the kiln and achieve the purpose of saving energy and reducing consumption,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D7/16F28F1/00
CPCF28D7/16F28F1/00
Inventor 王东杰吕志鸿刘海涛胡煦东靳雁松贾川贾大鹏李源浩
Owner CHINA NORTH VEHICLE RES INST
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