发电足球

发电足球,是由美国哈佛大学4名在校生设计并制作了一种名为sOccket的新型足球,这种足球能够将动能转化为电能并收集起来,人们可以利用这部分电能为LED灯等低电压照明设备供电,     

新能源发电的现状及前景

主要根据国内外发电状况的现状,民办矿物燃料资源的减少及其排放物对环境的污染情况,认为开发新能源发电很有必要。     

新型发电资源与发电方式开发研究初探

介绍了在实施可持续发展战略的进程中,新型发电资源和新型发电方式的开发研究日益令人瞩目。首先介绍了世界新型发电资源及新型发电方式的基本态热;然后提出了我国新型发电资源和新型发电方式开发研究的对策建议。     

一项环保节能的发电技术

近年来,随着国民经济的持续、稳定、高速发展和人民生活水平的不断提高,人们对能源的需求也急剧增加。2003年我国大部分地区出现了电力紧缺、拉闸限电现象,与此同时,我国的主要能源——煤的产量达16亿吨。     

调峰发电中抓节能技改

调峰发电中抓节能技改吴铭一苏州热电厂一、概述目前电力供应严重紧缺，尤其是峰谷电量相差悬殊。我厂按电网要求，从１９８９年７月份开始，就将四号机组（６０００ｋＷ抽凝机）投入调峰发电，五年来我们一直按市三电办调度命令安排运行，即每天早晨８点机组并网发电，每...     

谈谈节能减排形势下的发电调度改革

针对国家"十一五"节能减排目标的提出,结合电力行业的发展和现状,对江西电网的发电调度方式进行了简要回顾,阐述了合理改进发电调度方式的必然性.就江西电网的实际谈谈调度改革给我们带来的积极影响,同时也谈谈引出的问题和当前采取的有效措施.     

油田高压CO2气体发电技术的研究

本文研究了把油田开采过程的副产品－高压ＣＯ２气体转换成电能的技术方法。     

新一代变电站自动化监控系统的应用

新一代变电站主控装置SMU(substation master unit)和包含多媒体技术的当地监控系统,提高站控端与调度中心的通讯带宽,同时支持局域网和远程数据通信、独立的逻辑处理和自动控制能力已成为提高电力系统自动化水平的重要组成部分.     

新型海岸波浪发电装置的设计与分析

提出一种由发电机、蓄电装置、增速齿轮组、主轴、多组组件组成的利用波浪能发电的装置。多组组件安装在主轴上,每一组件包括弹簧外卡环、扭转弹簧、卷筒棘轮机构、浮子、绳子和定滑轮,当浮子随波浪上下浮动时,卷筒正反转,扭转弹簧提供卷筒反转的力,利用棘轮机构的单向运动特性、多组组件及增速齿轮组保证电机主轴连续单向高速旋转,达到发电目的。卷筒是该装置的主要受力部件,文中对其建立了有限元模型、进行了受力计算及边界条件的确定,应用simulation进行有限元分析,结果表明,对于给定的条件,卷筒刚度和强度均满足要求。     

一种新型CPC聚光热电联产系统

开发了一种新型热管冷却式CPC聚光热电联产系统(PV/T),建立了系统的数学模型。系统采用了蒸发段截面为半圆形的异形热管冷却,整个系统只有普通平板热水器的大小。CPC聚光器截取后的高度为100mm,入口宽度为62 mm,几何聚光比为4.13。采用了光学模拟软件对聚光器进行了光线追踪模拟与辐照度分析,随着入射角度的减小,光斑向聚光器对称中心偏移,最大能流密度逐渐减小,接收面光线分布趋于均匀,但依然存在光线集中现象。     

Renewable generation and demand response integration in micro-grids: development of a new energy management and control system

The aim of this research resides in the development of an energy management and control system to control a micro-grid based on the use of renewable generation and demand resources to introduce the application of demand response concepts to the management of micro-grids in order to effectively integrate the demand side as an operation resource for the grid and improve energy efficiency of the elements. As an additional result, the evaluation of reductions in the total amount of CO₂ emitted into the atmosphere due to the improvement of the energy efficiency of the system is assessed.     

新一代高速动车组列车牵引力学计算分析

为了研究新一代动车组列车在外力作用下沿轨道的运行情况,需要对列车进行牵引计算。以力学为基础,以科学计算和先进操纵经验为依据,以CRH2型动车组为例,给出列车牵引力和加速度的计算方法;同时介绍了利用多质点模型对新一代高速动车组列车进行牵引力学计算分析的算法。     

新一代机车制动机方案研究

简要介绍了微机控制的机车制动控制系统的形式和特点,分析了新一代机车制动机的结构形式及其功能。在此基础上,提出了新一代机车制动机方案。并对该方案的系统组成和作用原理进行了介绍。     

Power generation from a new air-based Marnoch heat engine

This paper examines the performance of a new Marnoch heat engine, which uses dry air and a pneumatic piston assembly to convert thermal energy to electricity. The system has unique capabilities of operating over temperature differentials less than 100 K. Unlike a common Stirling engine, the heat exchangers and piston assembly are not co-located, which is beneficial for positioning of heat exchangers in various configurations. This paper presents an operational laboratory-scale, proof-of-concept Marnoch heat engine (MHE), including its performance and power generation capabilities. It also presents a thermodynamic analysis of the system. Based on the MHE results, component modifications are made to improve its performance. The configuration has an efficiency of about thirty percent of a Carnot heat engine operating in the temperature range between 272 K and 372 K. Experimental data is acquired to provide verification of the predictive model, as well as demonstration of the MHE’s capabilities for efficient generation of electricity from waste heat sources.     

The development of a PEMFC hybrid power electric vehicle with automatic sodium borohydride hydrogen generation

This paper describes the development of a hybrid Proton Exchange Membrane Fuel Cell (PEMFC) electric vehicle consisting of a 3 kW PEMFC, PV arrays, secondary battery sets, and a chemical hydrogen generation system. We first integrate a hybrid PEMFC electric vehicle and design power management strategies. The on-board hydrogen generation system can provide sufficient hydrogen for continuous operation of the PEMFC, and the performance tests demonstrate the effectiveness of the integrated system in providing sustainable power for driving. We then use Matlab/SimPowerSystem? to develop a simulation model and adjust the model parameters using experimental data. The results indicated that the model can effectively predict system responses and can be used for performance evaluation. We also use the simulation model to estimate the mileage and costs of the developed electric vehicle, and we discuss the impacts of component sizes on system costs and travelling ranges.     

Distributed energy generation and sustainable development

Conventionally, power plants have been large, centralized units. A new trend is developing toward distributed energy generation, which means that energy conversion units are situated close to energy consumers, and large units are substituted by smaller ones. A distributed energy system is an efficient, reliable and environmentally friendly alternative to the traditional energy system. In this article, we will first discuss the definitions of a distributed energy system. Then we will evaluate political, economic, social, and technological dimensions associated with regional energy systems on the basis of the degree of decentralization. Finally, we will deal with the characteristics of a distributed energy system in the context of sustainability. This article concludes that a distributed energy system is a good option with respect to sustainable development.