Host: The Japan Society of Mechanical Engineers
Name : The 30th International Conference on Nuclear Engineering (ICONE30)
Date : May 21, 2023 - May 26, 2023
The helical coil once-through tube steam generator (HCOTSG) has a high application value in integrated modular small reactors due to its compact structure and high heat transfer capability. In this paper, the effect of the number of spiral tube layers on the shell-side flow heat transfer is investigated by numerical simulation, and the velocity, temperature, and pressure distribution characteristics of the shell side of different layers of spiral tubes are compared and analyzed. The study shows that the spiral tube bundle shell side will produce complex vortex flow; with the increase of the number of layers, the flow distribution gradually uniforms, the flow velocity decreases, and the heat transfer capacity also gradually weakened, when the number of layers increased to 8 layers tends to stabilize. The pressure drop per unit length increases with the increase in the number of layers. This study will provide theoretical support to simplify the design of the structure of the HCOTSG shell-side thermal-hydraulic experiment body.
