关键词: 船用蒸汽蓄热器, 连续充放汽, 蒸发（冷凝）弛豫时间, 数学模型

Abstract: According to the characteristics of marine steam accumulator, the mathematical model of continuous working process of marine steam accumulator which considered the evaporation (condensation) relaxation time is established. The accuracy of the model is validated by the experimental results of the marine steam accumulator. On this basis, the influence of the key parameters on the dynamic characteristics of the continuous charging and discharging process is studied with the simulation model. The water filling coefficient of marine steam accumulator determines the heat storage capacity of marine steam accumulator and restricts the maneuverability of the system. However, the charge and discharge pressure not only influence energy storage and conversion efficiency, but also play a key role for optimizing the volume of steam accumulator. So the relationship of the water filling coefficient and the charge and discharge pressure should be matched reasonably by taking into account the requirements of steam catapult system about the launch cycle, steam pressure and the quantity of steam, to make it not only satisfy the launch efficiency but also achieve the required steam parameters for aircraft take-off.

Key words: marine steam accumulator, continuous charging and discharging steam, the evaporation (condensation) relaxation time, mathematical model