铝水燃烧UUV混合动力系统性能计算

Performance research of the UUV hybrid propulsion system based on aluminum-water combustion

介绍了一种基于铝水燃烧的UUV混合动力系统(HAC)概念,并在给定燃烧室温度及换热器效率条件下结合系统组件建立性能计算模型。根据结果分析可知,输出功率相同时,系统能量密度随燃烧室温度升高而升高,随工作深度增加而降低;绝热压缩时较低涡轮压力比(PR)及等温压缩时较高PR均有利于系统性能提升;HAC系统能量密度相比现有锂电池技术提升10倍,相比SOFC提升近5倍;在考虑中性浮力时仍可达到锂电池的9倍以上。计算结果可为HAC系统评估和设计提供参考。

A novel UUV hybrid aluminum / water combustion（ HAC） propulsion system concept was introduced. Under the specific combustion chamber temperature and heat exchanger efficiency,a system thermodynamic model was developed to understand performance. The results of the system simulation show that in the same output power,energy density increased with combustor temperature increasing,whereas decreased with the work depth increasing. Both small turbine pressure ratio for adiabatic compression and big turbine pressure ratio for isothermal compression are good to improve the HAC system performance. The comparison results of different types of propulsion system show that the HAC system provides more 10 fold increase in energy density than the equivalent Li battery powered systems and 5 fold increase than the SOFC. When the neutrally buoyant is considered,there is still 9 fold increase for the HAC system energy density than Li battery powered system. The results could provide reference for HAC system estimate and design.