Abstract
Integrated and modular design is an inevitable requirement for marine nuclear power plant to realize high power under the condition of limited cabin capacity. Heat exchange equipment is an important part of marine power system, occupying a large amount of space weight. The extensive development and application of multi-medium casing integrated condenser has a decisive influence on the improvement of comprehensive performance of marine such as high power and flexibility.
In this paper, according to the compact structure and operation characteristics of the condenser of nuclear power plant, the finite volume method is used to calculate the air, steam flow and condensation process. The model adopts continuous porous media to simplify the tube bundle structure, flow and heat transfer process. The influence of tube bundle and corresponding solid structure on steam flow and heat transfer process is characterized by defining the resistance coefficient of porous medium and heat transfer term.
The model developed in this paper is used to simulate the flow field on the shell side of a condenser sample, and the calculation results are compared with the experiment results, which verify the accuracy of the model. This model is used to simulate and analyze the characteristics of multi-media flow field on the shell side of the casing integrated condenser, which provides an effective means for the structural optimization design and operation of the integrated condenser.
