
灵感源自帝企鹅,可实现净节能约5%
中船集团上海船舶研究设计院在上海正式发布自主研发的第二代智能型船舶气泡润滑减阻系统(BLS)。该系统灵感源自帝企鹅,已首次应用于5万吨级成品油/化学品船,实船验证表明可实现净节能约5%。
AI-generated summary
船舶气泡润滑减阻技术通过向船底释放压缩空气减少摩擦阻力,是国际海事组织认可的绿色船舶技术。
中新网上海10月17日电 (李秋莹 何宝新)10月17日,中船集团上海船舶研究设计院在上海向全球正式发布其自主研发的第二代智能型船舶气泡润滑减阻系统(BLS)。该系统已首次应用于新建的5万吨级成品油/化学品船,经海上航行验证表明,可实现净节能约5%,能效指数也显著提升。
BLS技术的灵感来自于帝企鹅的生存绝招。在位于南极半岛北端的威德尔海海域,一只帝企鹅正在水下捕食磷虾。突然,它发现一只斑海豹气势汹汹地从远处向它游来,企鹅立即转身向最近的浮冰逃去,全身发力加速到时速接近20公里的极限。而斑海豹也使出了爆发力,以时速40公里的极速很快就要逮住企鹅。千钧一发之际,企鹅抖动身体,将原来贮存在致密鳞状羽毛中的空气向水中大量释放,制造数百万个微气泡,当即在身体和水之间形成了一层“空气润滑膜”,令水的阻力大大减轻,气泡还干扰了海豹的视线。凭借这层微气泡外衣,帝企鹅大幅提高冲刺速度,最终一跃而起,跳上冰面,成功“豹”口脱险。
示意图。中船集团上船院供图
帝企鹅演化形成的这一生存绝招,如今正被应用于船舶节能减阻技术。
BLS的原理是通过向船底持续释放压缩空气,在船体表面与海水之间形成一层稳定的微气泡层,从而将船体周围海水边界层转化为气液混合流。利用空气与水物理特性不同,能够有效降低船舶航行时的摩擦阻力,进而减少主机负荷和燃油消耗。BLS不仅能节能减阻,还能抑制海生物在船底的附着,减小船舶污底影响。作为国际海事组织(IMO)认可的绿色船舶技术,BLS具有安装灵活、适配性强、投资回报周期短等特点,能够广泛应用于集装箱船、油轮、气体运输船、滚装船及邮轮等各类商船,是航运业应对环保法规、实现碳减排目标的重要手段之一。
船底装上BLS 后作业效果图。中船集团上船院供图
2022年5月,在完成第一代BLS后,创新中心的专家就启动了第二代智能化BLS的研究。与过去的试航验证不同,此次在5万吨级成品油/化学品船上进行的营运验证覆盖多航段、多吃水、多海况条件,完全真实运营场景。在为期5个月的实船运营测试期间,BLS供气模块与智能控制模块运行稳定。通过周期性自动启动和停止系统,实时记录船舶航行状态数据,获取同一船舶在不同吃水、航速等状态下的能效对比数据,直接、准确地反映系统在实际运营中的节能贡献。据悉,安装了第二代智能型BLS的3300TEU支线集装箱船将于近日完工交付。
AI outlook — possibilities, not facts
安装第二代智能型BLS的3300TEU支线集装箱船将完工交付
Very likely · Within days

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