“绿色照明”的节能潜力及对策

“绿色照明工程”是我国“九五”期间节能工作的重要措施这一。节能灯，具有效率高，寿命长，安全和性能稳定的优点，节能和环保效果明显。     

LED光源——新一代绿色照明

LED具有很多其他传统照明光源无法比拟的优势,因此被认为是取代白炽灯和荧光灯最具潜力的绿色光源。该文根据目前半导体照明的最新研究进展,简要介绍了LED光源的基本原理、主要优点,详细论述了其在照明领域的应用及发展趋势,指出了LED光源在照明普及过程中的一些主要问题。随着LED技术的发展,LED照明必将迎来广阔的发展前景。     

LED智能照明系统的节能研究

设计了一种LED智能照明系统,当工作区域有人并达到光源开启的阈值条件时,装置自动匹配室内照度数值,对光源输出量进行智能控制,研究其照明能耗情况。研究表明,对于额定功率36 W的LED和荧光灯,LED智能照明系统比荧光灯节能72.5%;LED智能照明系统比非智能控制的LED灯节能69.1%。LED智能照明系统充分利用自然光,达到了节能减排的目的。     

LED照明在地铁车辆中的应用

以杭州地铁1号线车辆采用的LED照明为例,介绍LED照明的特点,并以荧光灯管、卤素灯等传统光源为参照,对比分析LED照明与其他光源的区别,重点论述在地铁车辆中LED照明相比荧光灯照明在节能、环保等方面的优势.     

LED照明新一代的绿色光源

超高亮度白光LED的问世是人类照明史上一个重大的里程碑,标志着一种全新的照明光源的诞生.LED照明的高效、节能、环保、寿命长的显著特点,使其在照明领域的前景备受全球瞩目.本文简要介绍了LED的发展、特点、应用以及我国当前LED产业概况,以期能对LED照明及其产业发展有所认识.     

“绿色照明”在首钢

国家经贸委／UNDP／GEF中国绿色照明工程“绿色照明示范项目”现场新闻发布会日前在首钢举行。国家各有关部委、中国绿色照明工程专家组、国家电光源质量监督检测中心负责人及其它相关人士出席了会议。自１９９６年国家经贸委、国家计委、科技部等部门组织实施“中国绿色照明工     

绿色照明在城市道路中的应用研究

本文首先介绍了绿色照明的发展情况,并以近年来重庆市道路照明的有关资料为基础,分析了道路照明的现状;从绿色照明在道路照明中的应用环节出发,着重光源和供电两方面,对各种路灯光源的类型及特点进行比较,论述了路灯光源的选择原则和方法,提出了补偿功率因数、改进电网质量、配置变压器的措施.     

太阳能LED杀虫灯的研究

太阳能光伏和LED照明技术是最有前景的无公害灭虫技术之一.为了开发低成本的无公害灭虫技术,设计了一种太阳能光伏LED杀虫灯系统.通过试验研究,取得了一定的效果.文章简述了害虫的趋光性、LED灯的光学特性和基于LED的杀虫技术.     

Comparison of different energy saving lights using solar panel

The recent trend in light emitting diode or LED lighting applications and their claimed energy saving capabilities together with their overall attractiveness has us all convinced that they really are a greener alternative to the compact fluorescent lights or CFL. As convincing as it seems, the actual energy saving capabilities of LEDs are yet to be proven scientifically or at the least, on an empirical level when compared to CFLs. This paper tackles the issue with the use of a solar cell by evaluating the photovoltaic current and voltage generated by the solar cell subjected to each lighting system. Graphical representations are drawn and a conclusion is then reached based on the amount of power generation in the solar cells in order to determine the energy saving capabilities of each lighting system and its efficiency. From the result, it has been found that an LED is 3.7 times more power efficient than a CFL based light source of equal wattage.     

Role and prospects of green quantum dots in photoelectrochemical hydrogen generation: A review

Eco-friendly quantum dots (QDs) can be termed green QDs which stand as an attractive choice to modify the properties of known semiconductors in the direction of getting efficient photoelectrodes for solar-induced photoelectrochemical (PEC) splitting of water, due to their peculiar properties. Thus, it is of high significance to analyze their merit/demerit as an effective scaffold in PEC cell. QDs are known for their excellent optical properties however, the coupling of green QDs with semiconductor is not only useful in improving absorption characteristics but also promotes charge transfer. This review has undertaken the critical analysis on the worldwide research going on the green QDs modified photoelectrode with respect to their optical, electrical & photoelectrochemical properties, role, usefulness, efficiency, and finally the success in PEC system for hydrogen production. Various methods on the facile synthesis & sensitization techniques of green QDs available in the literature have also been discussed. Further, recent advances on the development of green QDs based photo-electrode, along with major challenges of using green QDs in this field have also been presented.     

从美国政府更替看绿色职业前景

光阴已经跨进了2009年,由美国次贷危机引发的全球金融危机仍在持续.由危机导致诸多产业不景气,造成世界各国不同程度出现了失业率攀升的现象.就业再就业必然面临更大困难,个人职业也面临新的选择. 1月20日布什政府完成了使命,退出历史舞台.其任期内发动的伊拉克、阿富汗战争和金融危机的爆发留给美国人民和世界人民许多遗憾.奥巴马政府在重重危机中走马上任.     

Direct battery-driven solar LED lighting using constant-power control

A direct battery-driven LED lighting technique using constant-power control is proposed in the present study. A system dynamics model of LED luminaire was derived and used in the design of the feedback constant-power control system. The test result has shown that the power of 18 W and 100 W LED luminaires can be controlled accurately with error at 2–5%. A solar LED street lighting system using constant-power and dimming control was designed and built for field test in a remote area. The long-term performance was satisfactory and no any failure since the installation. Since no high-power capacitor is used in the present constant-power control circuit, a longer lifetime is expected.     

Solar electricity prospects in Oman using GIS-based solar radiation maps

This paper discusses solar power prospects in Oman. First, the geographic and topographic information about Oman are presented. The methodology of producing solar radiation maps using GIS tools is then discussed. The results obtained show very high potential of solar radiation over all the lands of Oman during the whole year. A slope analysis has allowed calculating the yearly electricity generation potential for different Concentrated Solar Power (CSP) technologies such as the parabolic trough, parabolic dish, tower, and concentrated PV. For instance if only 10% of the land of Oman with a slope less than 1% is considered an exploitable land for the parabolic trough CSP technology, then the total calculated potential of yearly electricity generation would be about 7.6 million GWh, which is many multiples of (680 times) the current generation supply in Oman which was about 11,189 GWh in 2007.     

The road to green power in Mexico—reflections on the prospects for the large-scale and sustainable implementation of renewable energy

This paper reviews the prospects for renewable energy as a source of electricity in Mexico. It shows that, in spite of the abundance of renewable energy resources, applications to green power generation are minimal. Opportunities to use renewables as part of the Mexican energy mix are many, and could bring a number of benefits, social, economic, political, environmental and otherwise. Barriers to do so are also many and are analysed here. A pragmatic approach based on six strategic elements is proposed for barrier removal, namely: enabling policy and regulatory frameworks; adequate and effective institutional and technical settings; ad hoc financing mechanisms; concerted action plans among government sectors; mechanisms to facilitate participation of private and social sectors; and effective coordination among national and international stakeholders. It is concluded that Mexico is at cross-roads with respect to renewable energy, and that a swift, strong and sustained effort has to be made to alter the present situation. Otherwise, the opportunity ahead will be lost and Mexico will remain a net importer of the new energy technology.     

太阳能路灯蓄电池安装方式现状及完善构想

对太阳能路灯蓄电池安装方式存在的问题进行了分析,并提出了完善太阳能路灯蓄电池安装方式的构想.     

Keeping the lights on and the information flowing

Supplying electric power requires a large and very visible electrical infrastructure made of transmission lines, substations, and generating plants. Today, however, these components cannot operate without the assistance of a much more concealed information infrastructure of communication links, instrumentation, and control centers. The massive expansion of this information infrastructure over the last three or four decades has delivered considerable economic benefits and reliability improvements. Most significant from an economic perspective is the ability to operate with smaller security margins because the operators have access to more and more accurate information about the state of the power system and means to rapidly respond to include the automation of substations and the ability to operate large interconnections. The information infrastructure also contributes to the security of the system by alerting the operators of undesirable events and by making quicker, more targeted corrective actions possible. disturbances. Other important economic benefits     

The prospects for using of carbon nanomaterials as hydrogen storage systems

An analysis of the literature data evidences that carbon nanomaterials (CNMs) can sorb hydrogen in the amount exceeding the values required for H₂ storage mobile systems. It allows to hope for the possibility of using CNMs (if they are available) in the hydrogen storage systems.This paper shows the possibility of the use of a method for salting out fullerenes from their solutions in hydrocarbons and presents the technological chain for the fast and cheap isolation and separation of fullerene fraction.The proposed method can be of help in speeding-up the problem solution towards the mass use of carbon nanomaterials for hydrogen storage.