共查询到20条相似文献,搜索用时 125 毫秒
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据BPAmoco最新出版的《BPAmocoStatisticalReviewofWorldenergy》显示,2001年世界天然气储量增长3.3%。世界天然气产量和消费量增长幅度趋缓,其中天然气产量增长了1.7%,低于1990年以来年均1.9%的增长幅度;消费量增长0.3%,低于1990年以来年均1.8%增长幅度。北美地区由于受经济下滑以及较高的气价的影响,2001年天然气消费量下降4.9%,而世界其它地区天然气消费量均有不同程度增长。据美国能源信息署预测,在未来一次能源消费中天然气将是增长最快的,21世纪将是天然气的世纪。 相似文献
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针对国内自主研发的流化床垃圾焚烧技术,通过对几个不同掺煤比的锅炉实际设计应用介绍,简要回顾流化床垃圾焚烧锅炉十多年来的研发历程及最新的研究成果,同时进一步探讨其今后的发展趋势。 相似文献
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本文论述了甘肃省中小水电资源的分布状况,回顾了地方水电发展历程,并展望了今后甘肃省水电发展的前景 相似文献
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50 年来,陕西小水电及电气化事业得到了长足的发展,为工农业生产和贫困地区脱贫致富发挥了积极作用。本文对50 年的发展历程作以回顾,总结基本经验并提出新世纪小水电发展的方针 相似文献
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This study analyses the current industrial hydrogen markets in France on both a European and international scale, while endeavouring to assess future prospects by 2030. Hydrogen is produced either on purpose or unintentionally as a co-product. Intentional production of hydrogen, generally from natural gas, is classified as captive or merchant hydrogen. France produces about 920,000 metric tons of hydrogen annually. The producer and consumer industries are, in decreasing order of importance are: oil for refinery and petrochemicals, ammonia, iron & steel (co-production), chemicals, and chlorine (co-production). The intentional production of hydrogen from natural gas amounts to less than that co-produced: 40% compared with 60%. The amount of burned hydrogen is about 25% of the total. Production-related carbon dioxide emissions range between 1% and 2% of the total emissions in France. There is an increasing trend in the industrial hydrogen production, essentially due to the oil industry whereas a decline in production is expected in the ammonia industry. The annual production around 2030 should therefore be greater than 1 million metric tons (MMT) per year. If the iron & steel industry were to use hydrogen in every possible situation, it would double the total quantity of hydrogen produced and consumed in France. 相似文献
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陕西地处长江、黄河两大流域,水力资源比较丰富,建国50 年以来,水力发电事业有了较大的发展。本文主要阐述了陕西省水电发展的50 年历程与成就 相似文献
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固体润滑技术的研究现状及展望 总被引:8,自引:0,他引:8
固体润滑是将固体物质涂或镀于摩擦界面,以降低摩擦,减少磨损的措施。当前,可以作为固体润滑剂的物质有石墨和二硫化钼等层状物质、塑料和树脂等高分子材料、软金属及其各种化合物等。在分析固体润滑机理的基础上,对常用的固体润滑材料,金属基润滑材料和高分子润滑材料的基本性质及使用特性进行了简要分析;简要说明了固体润滑技术的实际应用的基本常识;分析了各种状况下应该使用何种固体润滑剂;展望了固体润滑剂的发展方向。 相似文献
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Interest in nuclear power has been revived as a result of volatile fossil fuel prices, concerns about the security of energy supplies, and global climate change. This paper describes the current status and future plans for expansion of nuclear power, the advances in nuclear reactor technology, and their impacts on the associated risks and performance of nuclear power. Advanced nuclear reactors have been designed to be simpler and safer, and to have lower costs than currently operating reactors. By addressing many of the public health and safety risks that plagued the industry since the accidents at Three Mile Island and Chernobyl, these reactors may help break the current deadlock over nuclear power. In that case, nuclear power could make a significant contribution towards reducing greenhouse gas emissions. However, significant issues persist, fueling reservations among the public and many decision makers. Nuclear safety, disposal of radioactive wastes, and proliferation of nuclear explosives need to be addressed in an effective and credible way if the necessary public support is to be obtained. 相似文献
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李瓒 《电网与水力发电进展》2000,16(1)
建国 50年来 ,西北地区坝工建设有了很大的发展 ,建成了许多大坝 ,为当地提供了丰富的水源与电源。本文主要叙述西北地区坝工建设的发展、经验、教训及今后的展望。 相似文献
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C. Edwin Witt Richard L. Mitchell Martha Symko-Davies Holly P. Thomas Richard King Douglas S. Ruby 《Solar Energy Materials & Solar Cells》2001,67(1-4)
The goals of the Photovoltaic Manufacturing Technology project (PVMaT) are to help the US PV industry improve photovoltaic manufacturing processes and accelerate cost reductions for PV components and systems. PVMaT is in its ninth year of implementation, and subcontracts with industry have been completed from four solicitations for R&D on manufacturing process problems. We are in the second year of subcontracts for a fifth PVMaT solicitation.Based on the latest (1998) data from ten PVMaT industrial participants, the average direct manufacturing cost for these producers has been reduced by 29% – from $4.08 to $2.91 per peak watt since 1992 – and there has also been a more than five-fold increase in manufacturing capacity – from 13.1 to 73.3 MW. We believe R&D on manufacturing processes contributes significantly to expeditious reductions in PV manufacturing costs, and we identify areas for future R&D. 相似文献
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中国铁路内燃机车发展50年 总被引:1,自引:0,他引:1
重点回顾了我国内燃机车50年来的发展历程,包括6个发展阶段和4代国产内燃机车更新换代的情况;介绍了50年来国产内燃机车发展的成就;对国产内燃机车的技术水平作了评价;概括说明了我国内燃机车的现状;对未来发展前景做了展望。 相似文献