Vol.4 No.11 (November 2014)
Study on Flash Evaporation Performance of Marine Flash Tank
Taken marine flash tank as the prototype, the variable mass system thermodynamics model of flash tank was built based on the reasonable assumptions. The simulation program was compiled based on Simulink code. Study on flash evaporation performance for marine flash tank was conducted at different operating conditions and rules of variation of the key thermal-hydraulic parameters were obtained. Simulation results revealed that the change rate of fluid temperature increased due to lower initial temperature and higher superheat. Meanwhile, the results, which were obtained in different backpressure and initial temperature, agreed well with experimental data. The maximum relative deviation arrived at 5%. The successful application of variable mass system thermodynamics model in the simulation of the flash tank performance can supply some theoretical basis for ship steam power system design.
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