共查询到20条相似文献，搜索用时 15 毫秒
1.
Sheela K. Ramasesha 《Resonance》2013,18(5):440-457
The global warming issues were discussed in Part 1 of this series of articles. This part describes the different solar energy technologies that are available for generating electricity to meet our daily power requirement. The article focuses on different kinds of materials that can be used to make the photovoltaic cells. The most common photovoltaic cells are made with monocrystalline or polycrystalline silicon. The next generation photovoltaic cells are thin film based. The high efficiency multijunction and concentrated solar cell technologies are also introduced in this article. The concept of power generation using solar thermal energy is explained. In the Indian scenario, there are about 250–300 sunny days in most parts of the country. A brief summary of the solar sector achievements in the country is given. 相似文献
2.
王光伟 《天津工程师范学院学报》2006,16(1):14-17
综述了世界及我国太阳能电池产业的发展。指出提升现有多晶薄膜型太阳能电池的光电转换效率并降低其成本是当前光伏电能领域的主要课题。为了同单晶硅太阳能电池竞争，薄膜型光电池必须在性能方面与之相当，成本应该更低。要获得更低的成本，最好的出路是探索更高性能的电池材料和新颖的电池结构。文章阐明用多晶锗硅薄膜作为太阳能电池材料，能获得比多晶硅薄膜太阳能电池更高的发电效率和更低的成本。 相似文献
3.
Conversion of sunlight to electricity with high conversion eficiencies at low cost is possible with emerging photovoltaic technologies. Organic–inorganic halide perovskite, a newcomer in the solar cell industry has proved its potential for increasing efficiency rapidly from 3.8% in 2009 to 22.1% in 2016. High efficiency, fiexibility, and cell architecture of the emerging hybrid halide perovskite have caught the attention of researchers and technologists in the field. This article focuses on the emergence, properties, and current research status of hybrid perovskite solar cells. 相似文献
4.
With rising standards of living, the per capita energy consumption is increasing rapidly all over the world. The limited reserves of fossil fuels may be exhausted by the middle of the next century. This crisis situation has forced technologists to turn to alternate sources of energy, like wind energy, ocean thermal energy and solar energy. All the above forms of energy are indirectly derived from solar energy. In this article a short account of the amount of solar radiation reaching the earth, its spectral distribution and its interaction with the earth’s atmosphere is presented. A brief discussion is given on hydro-power, wind-power and ocean thermal energy conversion as indirect techniques of utilization of solar energy. Solar energy can also be directly converted into heat and electricity. Techniques for such direct conversion, with special reference to photovoltaic generation of electricity, are also described in this article. 相似文献
5.
In order to utilize solar energy effectively and to achieve a higher electrical efficiency by limiting the operating temperature of the photovoltaic （PV） panel, a novel photovoltaic/thermal solar-assisted heat pump （PV/T-SAHP） system was proposed and constructed. The hybrid solar system generates electricity and thermal energy simultaneously. A distributed parameters model of the PWT-SAHP system was developed and applied to analyze the system dynamic performance in terms of PV action, photothermal action and Rankine cycle processes. The simulation results indicated that the coefficient of performance （COP） of the proposed PV/T-SAHP can be much better than that of the conventional heat pump. Both PV-efficiency and photothermic efficiency have been improved considerably. The results also showed that the performance of this PV/T-SAHP system was strongly influenced by the evaporator area, tube pitch and tilt angle of the PV/T evaporator, which are the key factors in PV/T-SAHP system optimization and PV/T evaporator design. 相似文献
6.
文章分析了光伏发电照明系统的太阳能电池组件选择、主要部件的容量计算和安装,以及将LED作为照明灯具等问题,提出了图书馆太阳能光伏发电照明系统的方案设计．以3kW光伏电站为样本,估算投资分布与发电成本,结果显示其成本与同类发电站成本相同,而太阳能光伏系统中最大的成本累积在蓄能环节．同时探讨了太阳能光伏发电系统的效率优化问题并提出了应对策略． 相似文献
7.
讨论太阳能小屋的设计问题。建立以全年太阳能发电总量最大及单位发电量费用最小的双目标规划模型,解决小屋表面的选定和光伏电池的选配,并利用CAD画图软件实现光伏电池的铺设方案。针对架空方式安装光伏电池,添加使顶面光照辐射量最大的目标函数,求得最佳架空倾斜角,进而设计新的太阳能小屋,使小屋的方位角和外观尺寸达到最优。 相似文献
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根据目前光伏电池领域的知识类别和能源化工专业学生的理论基础条件,确定课程知识框架。通过对教学参考书的整理研究,结合现今太阳能光伏产业的发展和技术革新状况,建构适合能源化工专业学生学习的内容体系,并对具体教学内容进行选编,使学生掌握基本的太阳电池相关知识。 相似文献
10.
为推进工程实践教学,培养学生创新能力,在教学实践过程中设计了一种测量太阳能光伏发电板实时参数教学实验平台,本实验平台解决现有技术中测量实验过程太阳能光伏发电板相关参数的仪器功能单一,不能自动记录下实时参数和绘制精确的趋势图等问题。该实验平台既可作为教师教学研究太阳能光伏发电相关特性设备,让学生加深太阳能利用相关知识;同时又可作为商业太阳能光伏检测设备,在高等学校实验室以及光伏发电企业中具有较高推广价值。 相似文献
11.
The charging characteristics of the valve-regulated lead acid (VRLA) battery driven by solar energy were experimentally studied
through the pressure-control method in this paper. The aims of the research were to increase charging efficiency to make the
most of solar energy and to improve charging quality to prolong life of battery. The charging process of a 12 V 12 A·h VRLA
battery has been tested under the mode of a stand-alone photovoltaic (PV) system. Results show that the pressure-control method
can effectively control PV charging of the VRLA battery and make the best of PV cells through the maximum power point tracking
(MPPT). The damage of VRLA battery by excess oxygen accumulation can be avoided through the inner pressure control of VRLA
battery. Parameters such as solar radiation intensity, charging power, inner pressure of the battery, and charging current
and voltage during the charging process were measured and analyzed. 相似文献
12.
文章基于应用型大学的学生科技创新与研发典型案例,结合本团队实践探索培养大学生科技创新能力的新途径。文章提出一种小型的采用柔性有机太阳能电池板发电的智能捕捉与自我保护装置,该太阳能电池板区别于传统的硅太阳能电池板的主要特性是具有成本低、可折叠、可剪裁以及良好的透光性;同时通过外界环境捕捉器设计和优化恶劣环境保护系统和太阳光照角捕捉系统,为进一步开发和应用大规模室外有机电池板提供了支持和借鉴,该产品的研发对于培养应用型大学的学生科技创新能力是一个有益的探索和途径。 相似文献
13.
潘柏英 《湖州师范学院学报》2008,30(1):45-48
从生态村公用楼道照明的实际需要出发,采用模块组合的方法研究和设计了一套太阳能光伏发电系统,为节能减排、公共照明免费供电作了有益的探索.该系统若遇长期阴雨天,能通过控制器自动切换至市电供电. 相似文献
14.
A. K. Shukla 《Resonance》2006,11(7):42-50
The intensity of solar radiation in the Earth’s direction from the Sun is approximately 1353 kW/m2, a number also called the ‘solar constant’. Accordingly, it is estimated that Earth receives about 96 billion kilowatts from
the Sun each second. If this colossal and unlimited energy could be more fully utilized, our dependence on fast dwindling
fossil cache will be drastically reduced. Solar energy is available in various forms such as direct solar radiation, wind,
wave power, rain (in the form of hydropower), photosynthesis and ocean thermal gradients. Among these, the direct conversion
of sunlight into electricity is clean and attractive. This article highlights various routes to directly harness electricity
from sunlight.
An erratum to this article is available at . 相似文献
15.
A. K. Shukla 《Resonance》2011,16(12):1294-1302
The intensity of solar radiation in the Earth’s direction from the Sun is approximately 1.361 kW/m2, a number also called the ‘solar constant’. Accordingly, it is estimated that the power Earth receives is about 96 billion
kilowatts from the Sun each second. If this colossal and unlimited energy could be more fully utilized, our dependence on
fast dwindling fossil cache will be drastically reduced. Solar energy is available in various forms such as direct solar radiation,
wind, wave power, rain (in the form of hydropower), photosynthesis and ocean thermal gradients. Among these, the direct conversion
of sunlight into electricity is clean and attractive. This article highlights various routes to directly harness electricity
from sunlight. 相似文献
16.
17.
韩群勇 《Journal of Zhangzhou Technical Institute》2012,14(2):17-19,36
研究太阳能光伏系统向一个边远山区畜禽养殖场供电,设计了一种可门动控制的光伏发电系统,能充分利用太阳能这…取之不尽的清洁能源,义不会对环境造成污染,具有应用前景。 相似文献
18.
论述了太阳能光伏发电的基本原理、设备和实际应用.重点评述了具有重要现实意义的太阳能发电系统和光伏电站建设,指出了光伏发电技术存在的优缺点,提出了改进建议,并对发展前景做了展望. 相似文献
19.
Sheela K. Ramasesha 《Resonance》2013,18(8):756-770
Wind energy, like solar energy, is a renewable form of energy that can be used to generate electricity using wind turbines. There are different kinds of wind turbines and a detailed discussion of each of these is given in the article. A brief introduction to the wind energy usage in India is also given. 相似文献
20.
目前,世界正在面临寻找替代能源以减少对常规能源的依赖,太阳能便是一个很好的解决方案。但是太阳能辐射强度和环境温度对太阳能电池技术参数和输出特性有很大影响,这里采用了太阳能电池的实用化的工程数学模型,在Matlab/Simulink的仿真系统中,建立了太阳能电池阵列的仿真模型,便于运用到太阳能的开发研究工作中。 相似文献