排序方式: 共有23条查询结果,搜索用时 15 毫秒
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10kW漂浮点吸收直线发电波力装置 总被引:1,自引:0,他引:1
点吸收式是目前世界上发展较多、转换效率较高的一种波浪能利用技术,介绍我国自主研发的一台10 kW漂浮点吸收波浪能直线发电装置。该装置主要由4 m直径蝶形振荡浮子、6 m直径水下阻尼板、1 t重直线发电机组成,整个装置漂浮在海面上,是一个钢结构体。装置外形为煤油灯形,采用共振聚波和阻尼匹配技术提高装置的转换效率,有效发电时间不受来波方向和潮位的影响,针对构成装置的不同材料采用不同的防腐技术提高装置的整体抗海水腐蚀能力,采用下潜方式躲避台风打击,采用蓄能技术提高锚泊系统抗走锚和断链能力。直线发电机是一个圆筒型结构体,具有较高的转换效率和防海水腐蚀能力。发电装置进行了实海况试验,为后续的研究工作提供了相关经验。 相似文献
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Structural Design and Protective Methods for the 100 kW Shoreline Wave Power Station 总被引:2,自引:0,他引:2
1 .IntroductionThe 1 0 0kWshorelinewavepowerstationofChinaisanOscillatingWaterColumn (OWC)wavepowerdeviceintegratedtoanelectricgrid .ItislocatedattheZhelangTown ( 2 2°39’Nand 1 1 5°34’E) ,ShanweiCityofGuangdongProvince .Theresearchanddevelopmentofthe 1 0 0kWOWCshore linewavepowerstationissupportedbyChina′sNationalKeyTechnologiesR&DPrograminthe 9thfive yearplan .TheconstructionofthestationstartedinJune 1 998andwascompletedinFebruary2 0 0 1 .Uptonow ,ithasbeenoperatingfor2years … 相似文献
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The "Sharp Eagle" device is a wave energy converter of a hinged double floating body. The wave-absorbing floating body hinges on the semi-submerged floating body structure. Under the action of wave, the wave-absorbing floating body rotates around the hinge point, and the wave energy can be converted into kinetic energy. In this paper, the power take-off system of "Sharp Eagle II" wave energy converter(the second generation of "Sharp Eagle") was studied, which adopts the hydraulic type power take-off system. The 0-1 power generation mode was applied in this system to make the "Sharp Eagle II" operate under various wave conditions. The principle of power generation was introduced in detail, and the power take-off system was simulated. Three groups of different movement period inputs were used to simulate three kinds of wave conditions, and the simulation results were obtained under three different working conditions. In addition, the prototype of "Sharp Eagle II" wave energy converter was tested on land and in real sea conditions. The experimental data have been collected, and the experimental data and simulation results were compared and validated. This work has laid a foundation for the design and application of the following "Sharp Eagle" series of devices. 相似文献
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状态空间模型是研究海洋波能转换系统相互作用的一种有效数学模型.应用该模型的关键之一是如何根据实验或计算的脉冲响应函数来高效地确定状态空间模型中的矩阵参数.结合最优化理论中的单纯形法、最小二乘法以及矩阵指数的简化算法,提出了一种确定状态空间模型矩阵参数的有效数值方法.数值试验表明,由于该方法克服了高斯-牛顿方法的局部收敛性及其需求解矩阵指数关于参数的导数的缺点,因此大大扩展了初值的可选范围,有效地提高了数值模拟效率,并且使数值模拟结果具有较高精度. 相似文献
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为了了解西安凹陷地下热水的补给循环及其赋存环境特征,对西安凹陷地下热水D、^18O、^13C、^14C、^34S分布特征进行了测定与分析。研究表明:西安城区地下热水中环境同位素δ(^180)、δ(^13C)、δ(^34S)的分布规律与其所在的关中盆地存在相反趋势,指示西安城区地下深部存在欠压实作用,表明西安是一个年轻的快速沉积盆地或其深部存在开启性断裂。通过水化学分析表明西安地区主要水化学类型为SO4-Na型,咸阳主要为Cl—Na型,指示咸阳地区的地质环境更为封闭。根据补给高程计算,西安、咸阳城区地下热水补给来源分别为秦岭和北山末次冰期高山雪水补给。 相似文献
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According to Newton''s Second Law and the microwave theory, mechanical analysis of multiple buoys which form Sharp Eagle wave energy converter (WEC) is carried out. The movements of every buoy in three modes couple each other when they are affected with incident waves. Based on the above, mechanical models of the WEC are established, which are concerned with fluid forces, damping forces, hinge forces, and so on. Hydrodynamic parameters of one buoy are obtained by taking the other moving buoy as boundary conditions. Then, by taking those hydrodynamic parameters into the mechanical models, the optimum external damping and optimal capture width ratio are calculated out. Under the condition of the optimum external damping, a plenty of data are obtained, such as the displacements amplitude of each buoy in three modes (sway, heave, pitch), damping forces, hinge forces, and speed of the hydraulic cylinder. Research results provide theoretical references and basis for Sharp Eagle WECs in the design and manufacture. 相似文献
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The variation of the atmospheric Carbon Dioxide (CO2) concentration plays an important role in global climate and agriculture. We analyzed the spatial-temporal characteristics of CO2 in the China region and around the globe with the CO2 column mixing ratios observed by the Japanese GOSAT satellite (Greenhouse Gases Observing Satellite). In order to make sure that the accuracy of the CO2 data retrieved by the satellite meets the needs of the climate characteristics analyses, we ran a validation on the CO2 column mixing ratios retrieved by the satellite against the ground-based TCCON (Total Carbon Column Observing Network) observation data. The result shows that the two sets of data have a correlation coefficient of higher than 0.7, and a bias of within 2.2 ppmv. Therefore, the GOSAT CO2 data can be used for the climate characteristics analysis of global CO2. Our analysis on the spatial-temporal characteristics of the CO2 column mixing ratios observed during the period of June 2009 through January 2014 proved that, with the impact of the natural emission of near ground CO2 and human activities, the global CO2 concentration has a significant latitudinal characteristics with its highest level averaging 390 ppmv in the 0-40oN latitudinal zone in the Northern Hemisphere, and 387 ppmv in the Southern Hemisphere. China has a relatively higher CO2 concentration with the highest level exceeding 398 ppmv, and the eastern area higher than the western area. The variation of global CO2 concentration shows a seasonal pattern, i.e. the CO2 concentration reaches its highest in spring in the Northern Hemisphere averaging more than 392 ppmv, second highest in winter, and lowest in summer averaging less than 387 ppmv. It fluctuates the most in the Northern Hemisphere with an average concentration of 392.5 ppmv in April, and 385.5 ppmv in July. While in the Southern Hemisphere, the seasonal fluctuation is smaller with the highest concentration occurring in July. Over the recent years, the global CO2 concentration has shown an elevating trend with an average annual increase rate of 1.58 ppmv per year. It is a challenge that the human kind has to face to slow down the increase of the CO2 concentration. 相似文献