Knowing the working characteristics and operating environment of open and closed gasifiers, submerged combustion gasifiers, liquid medium gasifiers and ambient air gasifiers, the above different types of LNG gasifiers have their own advantages and disadvantages. Therefore, when selecting gasifiers, the type and configuration must be selected according to the actual situation of the project. According to the heat transfer mechanism, in low-temperature engineering, one of the common heat exchanger equipment, The cryogenic working medium often used in the gasified pipeline involves the gas-liquid change process.
After this phenomenon occurs, the working process is more complex than the common heat exchanger. The heat quality of the working fluid has not only changed dramatically, but also it is more difficult to accurately identify the whole physical change process. On the other hand, it is difficult to realize the visualization experiment of boiling heat transfer in the vaporizer tube. Therefore, it is also unrealistic to use the experimental method to judge the heat transfer process from a microscopic perspective. For the study of finned tube phase change heat transfer, It has important practical and engineering significance to understand and predict the heat transfer performance of gasifier more accurately.
Now we have studied the heat transfer characteristics of phase change flow in the vaporizer tube, and carried out the heat transfer process of low temperature liquid nitrogen phase change in the vaporizer tube through theoretical understanding and numerical simulation. According to the summary of many data at home and abroad, the characteristics of the low temperature liquid phase change heat transfer process in the finned tube gasifier tube have been established, and the heat transfer calculation correlation of each region has been established separately. The vaporizer receives the filtered air through the air filter to produce mixed gas, The resultant mixed gas is supplied to the engine body, and the body hole is formed in the carburetor body.
The short needle valve pipe of the vaporizer is accepted by moving forward and backward along the axis. The periphery of the stair circle is formed in the main hole. The needle valve stem can be manipulated to adjust the size of the hole, adjust the size of the hole, pass through the hole from the fuel source, and then adjust the amount of fuel supplied to the fuel discharge part through the needle cavity.
