Device for evaluating internal condensation characteristic of enhanced heat transfer pipe

A technology of heat transfer tubes and characteristics, which is applied in the field of performance testing of heat transfer elements of heat exchangers. It can solve the problems that the local condensation heat transfer coefficient cannot be obtained according to the temperature, and achieve the effect of verification accuracy and data acquisition system accuracy.

Pending Publication Date: 2018-12-14
SHANGHAI INST OF SPECIAL EQUIP INSPECTION & TECHN RES +1
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Problems solved by technology

During the test, the temperature at the measuring point of the thermocouple cannot be used to deduce the inner wall tem

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  • Device for evaluating internal condensation characteristic of enhanced heat transfer pipe
  • Device for evaluating internal condensation characteristic of enhanced heat transfer pipe
  • Device for evaluating internal condensation characteristic of enhanced heat transfer pipe

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Embodiment Construction

[0024] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0025] Embodiments of the present invention relate to a device for evaluating the condensation characteristics in enhanced heat transfer tubes, such as figure 1 As shown, the device is composed of steam system, test section, cooling water system, data acquisition system and supporting pipeline valves.

[0026]Described steam system comprises boiler 6, precooler 8, air compressor 1, gas tank 2, drier 3, gas heater 5 and static ...

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Abstract

The invention relates to a device for evaluating internal condensation characteristic of an enhanced heat transfer pipe. The device mainly comprises a steam system, a test section, a cold water takingsystem and a data acquisition system, and can evaluate the local condensation heat transfer and pressure drop characteristics of various kinds of steam or mixed gas in different enhanced heat transfer pipes. The steam system comprises a boiler, a precooler, an air compressor, a gas storage tank, a dryer, a gas heater and a static mixer, and can provide pure-component and multi-component steam orair-containing mixed gas needed by the test. The test section comprises a straight pipe measuring section, a condensation section, a measuring section and an observation section which are connected with one another sequentially; an inlet is connected with the steam system; and an outlet is connected with a gas and liquid separator. The two ends of an outer sleeve pipe of each of the precooler andthe test section are connected with one set of water cooling system in parallel. The internal heat transfer coefficient of the enhanced pipe is acquired through a thermal resistance separation method,and basis is provided for thermodynamic design of an efficient pipe shell type condenser.

Description

technical field [0001] The invention relates to the field of performance testing of heat transfer elements of heat exchangers, in particular to a device for evaluating the condensation characteristics in enhanced heat transfer tubes. Background technique [0002] The condenser can obtain a higher heat transfer coefficient with a lower heat transfer temperature difference, and is the main equipment of the cooling system. Among them, the shell-and-tube condenser is the most widely used condensing equipment because of its easy manufacture, low production cost, wide range of material selection, convenient cleaning, and ability to adapt to high temperature and high pressure, and is in a leading position in petroleum, chemical and energy industries. . With the growth of the domestic economy, the contradiction between social development and energy shortage has become increasingly prominent. Therefore, efficient and compact heat exchange equipment is designed and manufactured, whet...

Claims

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Application Information

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IPC IPC(8): G01N25/14G01N25/20
CPCG01N25/142G01N25/20
Inventor 任彬汤晓英
Owner SHANGHAI INST OF SPECIAL EQUIP INSPECTION & TECHN RES
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