国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

As a new type of heat exchange equipment, the spiral wound tube heat exchanger has a more compact tube arrangement compared with traditional heat exchangers, which enables the equipment to have high heat transfer efficiency, large heat transfer area per unit volume, and easy multi-streaming, etc. It is of great significance for the design, production and use of actual equipment to study the heat transfer characteristics of equipment and combine it with computer technology to achieve performance optimization and calculation method improvement. In this paper, the computational fluid dynamics method(CFD) is used to numerically simulate the spiral wound tube heat exchanger, and the effects of different tube arrangements, adjacent tube layer spacing, shell side velocity, and heat exchange tube materials on the heat transfer performance of the equipment are studied and selected the four factors of inner diameter of tube, number of coils of tube winding, shell side velocity and tube winding radius and their corresponding levels were selected to carry out orthogonal test to analyze the influence of single factor on comprehensive heat transfer performance and its primary and secondary degree. Using Visual Basic language to develop the calculation program, through the fluid physical parameters, tube diameter, tube winding number, pipe number and other input and automatic calculation, to achieve the visualization of pressure drop, heat transfer coefficient, comprehensive performance index and other results, improve the calculation accuracy of the later design process.