共查询到17条相似文献,搜索用时 203 毫秒
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从技术、能量利用、经济性三个方面对液化天然气(LNG)船舶配置再液化装置的可行性进行了分析。技术方面,具备了成熟的理论和实践应用经验;能量利用方面,以部分再液化装置为例进行论证;经济性方面,与传统的蒸汽轮机进行对比分析。从以上三个方面得出结论,LNG船舶配置再液化装置切实可行。 相似文献
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作为传统LNG船舶蒸汽透平推进装置的替代方案之一,双低速柴油机联合再液化装置的推进方案以其经济性好、易于管理等优点越来越受到船东的欢迎.再液化装置能够让LNG船舶为买家输送更多的货物,同时使得效率更高的低速柴油机得以在LNG船舶上安装. 相似文献
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首先解释了液化天然气运输船蒸发气再液化的必要性,分析了蒸发气低温制冷原理和再液化装置工作原理,然后对传统蒸汽动力装置船舶和带再液化装置的低速柴油机动力装置船舶分别就船舶设备投资成本、燃料费用、LNG消耗费用、维修保养费用等进行比较分析,从而得出燃料油和天然气在不同价格时固定航线每年节约费用及不同航线每年节约费用比较,最后就再液化装置对运输能力的影响进行分析,证明LNG船采用蒸发气再液化有非常好的经济性. 相似文献
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基于国内外专利文献,通过专利挖掘和数据分析,对全球LNG船舶蒸发气处理系统的发展态势和技术演化路径展开分析,为企业在该领域的专利布局提供理论支撑。研究表明:全球LNG船舶蒸发气处理系统技术专利申请具有明显的阶段性特征,韩国企业在该领域有绝对的技术优势,中国虽然在该领域的技术研发起步较晚,但创新能力和影响力正在不断提升;LNG船舶蒸发气处理系统领域的技术研发主要集中在直接压缩工艺、再冷凝工艺、再液化工艺3个方面,而优化压缩机的负荷调控、提升压缩机运行稳定性、减少杂质、增强装置防护性与耐用性、提升再液化效率和降低设备运行成本是该领域技术发展和专利布局的重点。 相似文献
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基于LNG(液化天然气)的物理性质,通过与柴油的对比分析,表明液化天然气作为内河运输船舶燃料具备明显的经济性、环保性、安全性,纵观发展LNG船舶燃料和宿迁液化气船舶的使用状况,提出应用LNG具有美好的发展趋势与广阔的应用前景。 相似文献
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以大型浮式储存及再气化装置为研究对象,利用系统能量梯级理论设计出包含空气分离、制备干冰、两级朗肯循环发电、海水淡化、船舶冷库、船舶空调和制冰等利用形式的冷能综合利用系统。以系统效率为目标函数,借助Aspen HYSYS软件进行系统的模拟计算和参数优化。采用Peng-Robinson方程法建立系统冷利用率数学模型,并对系统冷利用率和经济性计算分析。计算分析表明系统冷能利用效率达到29.57%,冬季和夏季冷能利用经济效益分别达到19.40万元/天和21.17万元/天,验证了浮式LNG储存再气化装置冷能利用系统的合理性和巨大的经济性。 相似文献
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LNG蒸汽冷能在船舶上的应用探讨 总被引:1,自引:1,他引:0
首先介绍了LNG蒸汽的性质特点,结合船舶的功能特点,探讨了LNG蒸汽冷能可以应用于船舶伙食冰库、海水淡化装置、空气分离装置等领域。然后根据LNG船舶的特殊性,探讨了将LNG蒸汽冷能用于上述装置时需要达到的要求。最后对其进行了展望,伴随着陆上运用LNG蒸汽冷能技术的进一步成熟,在船舶上利用LNG蒸汽冷能技术将逐步实现。 相似文献
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海上风力机安装技术研究(英文) 总被引:1,自引:0,他引:1
Wind power has made rapid progress and should gain significance as an energy resource, given growing interest in renewable
energy and clean energy. Offshore wind energy resources have attracted significant attention, as, compared with land-based
wind energy resources, offshore wind energy resources are more promising candidates for development. Sea winds are generally
stronger and more reliable and with improvements in technology, the sea has become a hot spot for new designs and installation
methods for wind turbines. In the present paper, based on experience building offshore wind farms, recommended foundation
styles have been examined. Furthermore, wave effects have been investigated. The split installation and overall installation
have been illustrated. Methods appropriate when installing a small number of turbines as well as those useful when installing
large numbers of turbines were analyzed. This investigation of installation methods for wind turbines should provide practical
technical guidance for their installation. 相似文献
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In this paper, a numerical investigation of a float-over installation for an offshore platform is presented to verify the feasibility of the actual installation. The hydrodynamic performance of a T-barge is investigated in the frequency domain, and the coupled motions are analyzed in the time domain. We then compare with those of the model test and determine that the response amplitude operator and the time series agree quite well. The barge exhibits favorable hydrodynamic behavior in the considered sea state, and the equipment loads are allowable. The mooring system and sway fender forces are within the permissible range. Based on these results, we can verify that the actual installation of the offshore platform is feasible. We accurately simulated many important factors and effectively reduced the risk associated with the offshore installation, which is of great importance. As such, we demonstrate that the numerical simulation of the float-over installation for offshore platforms has practical engineering significance. 相似文献
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两次节流循环在丙烯再液化系统中的热力分析 总被引:1,自引:0,他引:1
在传统LPG船再液化系统中采用两级压缩一次节流中间不完全冷却循环的基础上提出了两级压缩两次节流中间不完全冷却的再液化循环.结合两种节流方式的压力—热焓(p-h)图进行了理论分析,并且基于丙烯液化石油气船的实例,进行了两种节流方式的热力分析,计算出了再液化系统在一次节流和两次节流时的单位制冷量、制冷系数、压缩机功耗等一系列数据并进行了比较.结果表明,在相同条件下,两次节流循环与一次节流循环相比,单位制冷量提高了1.66%,理论制冷系数提高了2.24%,压缩机消耗的理论功率降低了2.19%.使用两次节流的再液化系统可以减少设备的体积与重量,节约成本与船上有限的空间. 相似文献
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In this paper, a numerical investigation of a float-over installation for an offshore platform is presented to verify the feasibility of the actual installation. The hydrodynamic performance of a T-barge is investigated in the frequency domain, and the coupled motions are analyzed in the time domain. We then compare with those of the model test and determine that the response amplitude operator and the time series agree quite well. The barge exhibits favorable hydrodynamic behavior in the considered sea state, and the equipment loads are allowable. The mooring system and sway fender forces are within the permissible range. Based on these results,we can verify that the actual installation of the offshore platform is feasible. We accurately simulated many important factors and effectively reduced the risk associated with the offshore installation, which is of great importance. As such, we demonstrate that the numerical simulation of the float-over installation for offshore platforms has practical engineering significance. 相似文献