北京应大力发展生物质能燃料

我国是一个消费大国,在一次能源中煤炭所占比例高达70%以上.随着我国能源需求的不断增长以及化石能源消耗带来的环境压力的不断加剧,新能源和可再生能源的开发利用越来越受到重视.开发利用新能源和可再生能源,对于改善以煤炭为主的能源结构,缓解能源生产和使用造成的环境问题,保障我国经济社会的可持续发展具有十分重要的意义.     

我国新能源可持续发展的思考

一我国新能源发展成绩突出近年,我国颁布实施《可再生能源法》,提出到2020年非化石能源达到能源消费15%的目标,将新能源作为七大战略性新兴产业之一。在政策扶持下,凭借资源和制造成本优势,我国迅速成长为全球新能源产业大国,实现了可再生能源技术、     

我国2014年可再生能源消费达4.4亿t标准煤

<正>近年来,我国一直大力提倡可再生能源的发展,以减少煤炭等常规能源消耗.从第九届中国新能源高峰国际论坛获悉,2014年,我国可再生能源的消费量达到4.4亿t标准煤,比2014年增长了10%.国家发展与改革委员会能源所副研究员胡润青说,近年来我国可再生能源消费量不断增加.2014年,可再     

特约主编寄语

<正>能源与环境是人类社会生存的两项基本要素。随着社会与经济的发展,人类对能源的需求量显著增加。化石能源的大量消耗,不仅造成了化石能源的资源匮乏,而且还导致了严重的环境污染。因此,普及应用可再生能源、提高其在能源消耗中的比例是实现社会可持续发展的必然选择。根据我国可再生能源发展规划,到2020年,我国可再生能源消费在全部能源消费中将达到15%,其中风电、太阳能发电的装机容量将分别达到200 GW和100 GW。因此,可再生     

中国2014年将成全球最大可再生能源市场

根据彭博新能源财经(BNEF)最新发布的2030年全球可再生能源市场前景预测,与2010年的1 950亿美元相比,到2020年,可再生能源年新增装机容量的投资额将增加一倍,达到3 950亿美元,到2030年将增加至4 600亿美元.20年后,可再生能源(包括大水电)提供的能源占全球能源生产总量的比重将从去年的12.6％提高到15.7％.     

21世纪中国风力发电展望

现代新能源和可再生能源技术是由２０世纪能源、电力技术发展形成的高新技术 ,最近２０年的长足进步 ,它已对世界能源、电力产业的结构调整产生巨大影响 ,进而引起能源电力产业结构的大重组和大调整 ,这不能不说是一个社会可持续发展的战略问题。风力发电在新世纪将大规模开发应用 ,全世界将以３０ -５０ %的速度持续增长。风力发电技术以安全可靠、无污染 ,不需消耗燃料 ,建设周期短 ,规模大小灵活 ,可并网运行等特点 ,在能源、电力产业中异军突起。可以预言 ,２１世纪是人类在能源方面以太阳能、风能等可再生能源为主的世纪 ,能源的开发利…     

促进盐城市新能源开发利用

简要介绍了太阳能、风能等可再生能源目前在国外的应用现状,并指出研究、开发和利用新能源将有助于缓解各国对传统能源消耗的需求.盐城风能、太阳能、垃圾和秸秆等资源丰富,开发和利用这些可再生能源将有效缓解盐城市经济快速发展带来的电力供应紧张状况及改善盐城市能源消耗结构,同时还可减少各种有害气体、粉尘和灰渣的排放,保护生态环境,促进盐城市经济社会持续协调快速发展.     

可再生能源配额制有望近期出台

国家能源局新能源与可再生能源司董秀芬处长近日表示,针对我国目前分布式能源发展现状,国家能源局将于近期出台一些措施,以把可再生能源规划落到实处。1.出台分布式项目管理办法,对微电网的电价及并网将有一个指导性的意见。2.实施可再生能源配额制,对地方政府和电网企业     

我国新能源和可再生能源发展预测方法研究--风能发电预测案例

我国新能源和可再生能源发展还处于初级阶段,综合各种考虑可以肯定未来发展潜力巨大,但同时也存在诸多限制发展的问题,因此及早探讨我国新能源和可再生能源的未来发展模式十分必要。文章从新技术发展的角度,参考国外方法,提出利用学习曲线规律和生长曲线规律综合预测我国新能源和可再生能源发展的方法．并以风力发电为例进行了简单预测分析。     

中国和上海光伏产业的发展情况与趋势

0前言能源短缺和环境污染是人类长期面临的两大难题,开发以可再生能源为主的新能源、发展低碳经济是解决这两大难题的重要途径,也是发展新兴产业的突破口。据报道2010年全球能源消耗折合标准油120亿t,比2009年增加5%。全世界的能源消耗中,石油占总消费量的33.6%,煤的消费量占29.6%。     

我国工业锅炉使用现状与节能减排对策探讨

针对我国工业锅炉使用现状,总结了工业锅炉使用中普遍存在的问题,并进行了原因分析,归纳了现阶段在用工业锅炉实施节能改造主要采用的技术、产品以及使用效果。结合工业锅炉节能潜力巨大的国情,提出我国工业锅炉节能减排工作的建议措施,并强调近期应重点考虑的工业锅炉节能减排技术、方法和措施。     

2017年我国煤炭发展形势回顾及2018年展望与建议

2017年,煤炭去产能成效显著,但总体过剩态势并没有得到根本改变;全国煤炭生产和净进口均较大幅度增长,库存虽总体下降但仍较为充足,煤炭有效供给保障增强;煤炭消费也在3年连降后小幅回弹,但消费反弹的动力较弱;全年煤炭价格波澜不惊,煤炭市场基本稳定;煤炭企业经营形势进一步向好。但是,近两年煤炭企业兼并重组去产能步伐明显滞后。展望2018年,全国煤炭需求总体与2017年持平或有所下降,完成煤炭企业兼并重组去产能的目标不容乐观。建议密切跟踪市场变化,适时调整政策,创造兼并重组的机会,加快推动重点企业兼并重组,提高产业集中度和融合度,推进煤炭工业转型升级。     

甘肃水力资源开发利用与改善生态环境

开发当地丰富的水力资源, 特别是中小水力资源, 对发展当地的经济有着重要的作用。文章论述了甘肃省中小水力资源开发现状、存在问题以及今后水力资源开发的战略和对策。     

Assessment of practices and technologies of energy saving and renewable energy sources in hotels in Crete

This study aims to assess the state of the art of practices and technologies of energy saving and renewable energy sources in hotels. This will contribute to determining the potential of efficient and sustainable energy technologies integration. Hotel managers were interviewed face to face and information sessions were provided. Special energy and environmental awareness campaigns, sectoral tourism programs for climate change mitigation and adaptation, supportive policies and hotel energy investments and renovation programs are some recommendations elicited from the results of this study.     

锅炉掉焦灭火原因分析及对策

针对某锅炉存在的灭火现象,提出造成该现象的主要原因是锅炉结焦严重和火检安装位置不佳等。经分析,认为煤质变差、一次风速偏高、煤粉细度偏粗、配粉均匀性差、卫燃带敷设过多、燃烧器切圆直径偏大、吹灰器布置不合理等是造成锅炉结焦严重的主要原因。通过改善煤质、在磨煤机出口安装煤粉分配器、调小燃烧器切圆、调整火检位置、对卫燃带进行小块分割、优化锅炉运行方式等措施,消除了锅炉掉焦灭火现象,可以作为解决同类锅炉结焦问题的参考。     

Numerical and experimental study of ethanol combustion and oxidation in laminar premixed flames and in jet-stirred reactor

The main objectives of this research consist in achieving both experimental and numerical studies of the combustion and oxidation of ethanol. Experimental mole fraction profiles of chemical species (stable, radical, and intermediates) were measured in three C₂H₅OH/O₂/Ar flat premixed flames stabilized at low pressure (50 mbar) and with equivalence ratios equal to 0.75, 1, and 1.25, respectively. The experimental setup used to determine the structure of one-dimensional laminar premixed flames consists of a molecular beam mass spectrometer system (MBMS) combined with electron impact ionization (EI). The oxidation of ethanol was also experimentally studied using a fused silica jet-stirred reactor (JSR). Experiments were performed in the temperature range 890–1250 K, at 1 atm, at four equivalence ratios equal to 0.25, 0.5, 1, and 2 and with an initial fuel concentration of 2000 ppm.A kinetic study was conducted in order to simulate all experimental data measured. It enabled building a kinetic mechanism by thoroughly reviewing the available literature and by taking into account specificities of the two kinds of experiments performed. Validity of the mechanism was also checked against experimental results previously published (ethanol oxidation in a JSR at 10 atm, ignition in a shock tube, combustion in premixed, partially-premixed, and non-premixed flames). This mechanism ensures a reasonably good modelling of the combustion and oxidation of ethanol over the wide range of experimental conditions investigated.     

Role of BCHP in energy and environmental sustainable development and its prospects in China

During last century, worldwide environment degradation gets more and more serious, and achieving environmental sustainable development is desirable. As many environmental issues are directly or indirectly energy related, energy sustainable development is one of the most important prerequisites for environmental sustainable development. Renewable energy technologies and energy conservation are two solutions for energy sustainable development. At present, energy-saving technology is a feasible and an effective way to achieve energy and environmental sustainable development, although renewable energy may be final solution to environmental issues. Building cooling, heating, and power (BCHP) technology, which usually use natural gas as primary energy, has high efficiency of energy utilization due to the utilization of distributed power generation and heat recovery, and thus is a promising energy conservation technology. BCHP can reduce pollutants emission and thus protects the environment besides improving IAQ and increasing reliability of building energy supply. As the largest developing country, China is just in the process of adjusting energy structure and improving energy efficiency. Because of its significant role in energy and environmental sustainable development, developing BCHP in China will help the country in optimizing energy proportion, increasing energy efficiency, and protecting environment. Therefore, BCHP technology will have broad prospects in China and it will promote the country's energy and environmental sustainable development.     

Application and development of solar energy in building industry and its prospects in China

China is the second largest country in energy consumption. More and more energy demand pressures cause the Chinese government to review its economy and energy policies in order to support the sustainable development. In China, the building sector amounts to 27.8% total energy consumption, which is only behind the industry sector. China has abundant solar energy resource, which is extensively applied to buildings. Therefore, solar energy utilization in buildings has become one of the most important issues to help China optimize the energy proportion, increasing energy efficiency and protecting the environment. Solar energy resource and its district distribution in China are introduced in detail in this paper, and the representative solar energy application to the building sector is highlighted as well. The solar energy utilization obstacles, especially policy disadvantages in building sector in China, are reviewed. Moreover, the application prospects of solar energy in building sector are presented in combination with the China economic and household industry growth.     

印染行业中太阳能中温聚光技术应用分析

主要是对聚光跟踪太阳能中温系统在印染行业的可行性进行了分析,通过对太阳能热水工程和聚光跟踪太阳能中温系统对比分析,聚光跟踪太阳能中温系统在印染行业更具有应用价值.聚光跟踪中温系统具有提高单位面积太阳辐照的能量密度、时时跟踪,大幅度提高太阳能辐照的利用率、多重利用等优点,同时,相对于太阳能热水工程和传统燃油锅炉系统,其具有更高的经济效益.     

发电机氢气纯度湿度不合格及发电机进油分析及防范

发电机进油以及氢气纯度、湿度不合格给大型发电机的安全稳定可靠运行带来潜在的危害.针对大型汽轮发电机运行中存在的氢气纯度和氢气湿度不合格、发电机内进油的原因、危害,重点阐述了如何防范发电机进油、提高氢气纯度、降低氢气湿度的措施.