A method for controlling heating of a loop heat pipe system according to temperature

Abstract

The invention provides a method for controlling heating of a loop heat pipe system according to temperature. A temperature sensing element is arranged inside the first heat pipe and the second heat pipe to detect the temperature inside the electric heating device. The temperature sensing element communicates with the controller for data connected, the controller controls whether the flue gas heats the first heat pipe and the second heat pipe according to the detected temperature. In the present invention, the temperature detected by the temperature sensing element can satisfy a certain temperature, the evaporation of the internal fluid is basically saturated, and the volume of the internal fluid basically does not change much. In this case, the internal fluid is relatively stable. When the vibration of the tube bundle becomes worse, it needs to be adjusted to make it vibrate, so as to stop heating and switch to another heat pipe for heating. As a result, according to the temperature, the heat pipe is continuously heated alternately, thereby forming constant vibration descaling and heat exchange of the heat pipe.

Description

technical field [0001] The invention relates to a heat pipe technology, in particular to a heat pipe with a new structure. Background technique [0002] Heat pipe technology is a heat transfer element called "heat pipe" invented by George Grover of Los Alamos National Laboratory in the United States in 1963. It makes full use of the principle of heat conduction and phase change medium. The rapid heat transfer properties of the heat pipe quickly transfer the heat of the heating object to the heat source, and its thermal conductivity exceeds that of any known metal. [0003] Heat pipe technology was widely used in aerospace, military and other industries before. Since it was introduced into the radiator manufacturing industry, people have changed the traditional radiator design ideas and got rid of the single heat dissipation mode that only relies on high air volume motors to obtain better heat dissipation. The use of heat pipe technology enables the radiator to obtain a sati...

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Problems solved by technology

[0004] In the prior art, the shape of the heat pipe affects the heat-absorbing area of ​​the evaporating end, so the heat-absorbing range of the evaporating end is generally relatively small, and sometimes it is necessary to install multiple heat pipes in the heat source to meet the heat-absorbing demand; and when there are multiple evaporating ends, Because each evaporation end is in a different position of the heat source, it will produce uneven heat absorption.

In the prior art, the waste heat utilization heat pipe device always extends the condensation end to the outside of the pipe, which occupies the external area, making the heat pipe waste heat utilization system not compact

[0005] In addition, elastic vibrating tube bundles are widely used in waste heat heat exchange. In the application, it is found that continuous heating will lead to the stability of the fluid in the internal heat pipe device, that is, the fluid no longer flows or has little fluidity, or the flow rate is stable, resulting in disk The vibration performance of the tube is greatly weakened, which affects the descaling of the coil and the efficiency of heating

[0006] However, in the application, it is found that continuous waste heat heating will lead to the stability of the fluid in the internal loop heat pipe, that is, the fluid no longer flows or has little fluidity, or the flow rate is stable, resulting in a greatly weakened vibration performance of the coil, which affects the coil. Descaling of tubes and heating efficiency

[0007] In practice, it is found that if the vibration of the tube bundle is adjusted through fixed periodic changes, there will be hysteresis and the period will be too long or too short

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