电能来自海洋     

桂枝 《海洋世界》2004,(12):19-20

全球逐步升高的石油价格以及对全球气候变暖的担忧．已经将人们对可更新使用的能源的期待鼓至了极点。虽然风力和太阳能吸引了绝大多数人的注意力．但是目前对高科技水资源开发的呼声也与日俱增．海洋为人类提供的无尽的能源可以说是此轮竞赛中的一匹黑马。  相似文献   

化石燃料     

《地球》2014,(4):105-105

化石燃料亦称矿石燃料．是一种碳氢化合物或其衍生物．其包括的天然资源为煤炭、石油和天然气等。化石燃料的运用能使工业大规模发展．而替代水车。当发电的时候．在燃烧化石燃料的过程中会产生能量．从而推动涡轮机产生动力。旧式的发电机是使用蒸汽来推动涡轮机的。现时．很多发电站都已采用燃气涡轮引擎。那是利用燃气直接来推动涡轮机的。  相似文献   

Dynamic response of wind turbine towers in warm permafrost     

Benjamin Still  ZhaoHui 《寒旱区科学》2014,6(5):0423-0427

Wind is a great source of renewable energy in western Alaska.Consistent winds blow across the barren tundra underlain by warm permafrost in the winter season,when the energy demand is the highest.Foundation engineering in warm permafrost has always been a challenge in wind energy development.Degrading warm permafrost poses engineering issues to design,construction,and operation of wind turbines.This paper describes the foundation design of a wind turbine built in western Alaska.It presents a system for response monitoring and load assessment,and data collected from September 2013 to March 2014.The dynamic properties are assessed based on the monitoring data,and seasonal changes in the dynamic properties of the turbine tower-foundation system and likely resonance between the spinning blades and the tower structure are discussed.These analyses of a wind turbine in warm permafrost are valuable for designing or retrofitting of foundations in warm permafrost.  相似文献   

美国通用电子公司预计2008年风力涡轮机销售收入近60亿美元     

林农 《国土资源情报》2008,(3):32-32

路透社2008年2月12日报道,美国第二大电气公司——通用电气公司宣称,该公司希望能在2008年通过销售风力涡轮机获取将近60亿美元的收入。该公司副总裁约翰·莱斯说,风力发电业将继续超过预期,而风力发电市场决定了公司的经济收入。  相似文献   

Research on the unsteady hydrodynamic characteristics of vertical axis tidal turbine   总被引：1，自引：0，他引：1  

张学伟  张亮  王峰  赵东亚  庞程燕 《中国海洋工程》2014,28(1):95-103

The unsteady hydrodynamic characteristics of vertical axis tidal turbine are investigated by numerical simulation based on viscous CFD method. The starting mechanism of the turbine is revealed through analyzing the interaction of its motion and dynamics during starting process. The operating hydrodynamic characteristics of the turbine in wave-current condition are also explored by combining with the linear wave theory. According to possible magnification of the cyclic loads in the maximum power tracking control of vertical axis turbine, a novel torque control strategy is put forward, which can improve the structural characteristics significantly without effecting energy efficiency.  相似文献   

风电场会使夜间气温升高          下载免费PDF全文

胡德良  Sid Perkins 《气候变化研究进展》2012,(3):204

一项新研究表明,大型风电场会使夜间气温明显升高,从而影响局地气候。研究人员利用辨别城市热岛气温趋势的分析技术,审察了德克萨斯州中西部1万km2的卫星图像,该地区有着世界上最大的4个风电场。研究小组  相似文献