Analysis on heat transfer effect of air-temperature vaporizer in LNG satellite station

Abstract

Air-temperature vaporizer is the main equipment of LNG satellite station vaporization process, and the core equipment of the whole supply system, whose vaporization capacity decides the gas supply scale of LNG satellite station. The heat transfer effect of finned tube mostly affects the vaporization capacity of air-temperature vaporizer and also affected by many factors such as ambient temperature. Therefore, this research aims to study the heat transfer of finned tube in air-temperature vaporizer. With the actual case calculated and analyzed, the research has established the mathematical model of heat and mass transfer based on MATLAB program, with which the required length of finned tube is calculated. On comparing the results of simulation with actual ones, the reliability of the model is verified. According to the studies of the effects of air temperature, fin height, number of fins, and vaporization of LNG on the heat transfer process, the search sums up that the heat transfer performance of finned tube increases with the increase in air temperature, fin height, and vaporization of LNG although the effects are not obvious. The research has also calculated the length of finned tubes under different operating conditions. By comparing the outlet temperatures, the research summarizes that the most appropriate number of fins is 8.