An experimental device and method for measuring heat exchange efficiency of vapor-liquid-liquid heat exchanger
An experimental device and heat transfer efficiency technology, applied in the direction of measuring devices, machine/structural component testing, instruments, etc., can solve the problems of insufficient understanding, mistakes, and not many researches on the influence of heat transfer efficiency of heat exchangers, and achieve safety High performance and feasibility, broad application prospects and simple operation
Active Publication Date: 2022-07-15
HARBIN ENG UNIV
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Problems solved by technology
If considered in terms of single-phase, it is bound to cause errors
[0004] So far, the factors affecting the heat transfer efficiency of single-phase heat exchangers such as liquid-liquid and gas-liquid have been well understood, but there are not many studies on gas-liquid-liquid two-phase heat exchangers. Due to the complexity of the experiment, the two The influence of the phase ratio on the heat transfer efficiency of the heat exchanger is even more insufficient
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[0062] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.
[0063] The following specific embodiments are listed in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention.
[0064] like figure 1 The schematic diagram of the device for measuring the heat exchange efficiency of the vapor-liquid-liquid heat exchanger is shown in the figure, which is composed of four parts: (1) the power section (marked with ① in the figure); 3) Test section (marked with ③ in the figure); (4) Cooling section (marked with ④ in the figure).
[0065] The main circuit includes a pump 1, a filter 2, an observation port 3, a flow meter 4, a heating wire heating device 5, a blender 6, observation ports 7, 8, a vapor-liquid-liquid heat exchanger 10, and a known calibration efficiency. Heater 11 (can be plate type, tube type and other forms of heat exchangers), liq...
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The invention provides an experimental device and method for measuring the heat exchange efficiency of a vapor-liquid-liquid heat exchanger, comprising a power section, a heating section, a test section and a cooling section; the power section includes a pump, a filter and a liquid storage tank, which are The main circuit of the whole device provides power for the steam flow in the main circuit of the device; the heating section includes an electric heating wire heating device and a gas-liquid mixer. Control the heating section to change the steam dryness at the inlet of the test section; the test section includes a vapor-liquid-liquid heat exchanger, and the test section heats or cools the steam flow in the main circuit, thereby obtaining two different vapor-liquid-liquid heat exchangers The heat exchange efficiency in the working state, the cooling section cools the steam flow from the test section to the subcooled liquid state; the present invention measures the heat exchange efficiency of the vapor-liquid-liquid two-phase heat exchanger in the heat transfer test, and verifies that the inside of the pipeline Effects of different steam dryness and different fluid flow patterns at the inlet and outlet of the heat exchanger on the efficiency of vapor-liquid-heat exchange.
Description
technical field [0001] The invention relates to an experimental device and a method for measuring the heat exchange efficiency of a vapor-liquid-liquid heat exchanger, belonging to the field of heat exchanger experimental design. And real-time control of the local steam dryness in the heat exchanger, and the influence of different steam dryness and fluid flow patterns in the pipeline on the heat exchange efficiency of the vapor-liquid-liquid heat exchanger to improve the measurement of the heat exchange efficiency of the two-phase heat exchanger vacancies. Background technique [0002] The heat exchanger industry plays an important role in global industrial production and is a sunrise industry in a booming period. In the heat exchanger industry competition in the world, the markets of China, Russia, Brazil and India are several countries and regions that have grown rapidly in recent years. The total size of the heat exchanger market in the four countries accounts for nearly...
Claims
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IPC IPC(8): G01M99/00
CPCG01M99/002G01M99/005
Inventor 张小彬冯玉祥谷德林吕红庆梁文彦
Owner HARBIN ENG UNIV