排序方式: 共有17条查询结果,搜索用时 0 毫秒
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以煤气化为核心的多联产能源系统——资源/能源/环境整体优化与可持续发展 总被引:13,自引:1,他引:13
环境污染已经成为制约我国经济可持续发展的瓶颈。按现有技术我国能源系统是不可持续的。在一次能源以煤为主而且长期不可能大幅度变化的情况下 ,如何构建资源、能源、环境整体化的可持续发展能源系统 ,是从现在就要开始重点研究并逐步实施的战略性问题。文章提出以煤气化为核心的多联产能源系统是解决未来我国可持续发展的方向 ,详细论述了可能实施的多联产耦合实例、效益分析及需要解决的关键技术和科学问题 ;对我国实施多联产战略的起步、多层次步骤、政府支持及相关政策提出了建议。 相似文献
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研究H.264/AVC帧内重复编解码的性能,通过论证和实验把导致重复编解码尸舯m损失的因素归纳为4个方面:量化-变换误差,预测模式再选择误差,Clipping误差和环路滤波误差。为了提高H.264/AVC帧内重复编解码的性能,通过选择相同的预测模式且不使用环路滤波的方法进行重复编码,实验结果表明该方法使重复编解码的嗍损失减少0.5dB~1.4dB。 相似文献
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C. O. C. Oko 《国际自然能源杂志》2020,41(3):334-347
ABSTRACTThis paper presents the thermo-economic analysis of a waste-to-energy integrated multi-generation power plant using the municipal solid waste generated in Onitsha, Nigeria at latitude 6°9′N and longitude 6°49′E. The chemical energy in the municipal solid waste was converted to that of a synthetic gas, and subsequently converted into electrical energy in an integrated multi-generation power plant composed of gas turbine, steam turbine, micro turbine and absorption refrigeration cycles. The analysis was implemented in the HYSYS, EES, MATLAB and Microsoft environments. Results showed that the municipal solid waste had a power plant capacity of 168?MW, exergetic efficiency of 51%, life cycle cost of $143 million, breakeven point of 9 years, and a unit cost of electricity of $0.01/kWh. Compared to the combined power plant of similar capacity, the life cycle cost savings and reduction in the flue gas exit stack temperature were $49.07 million and 73°C, respectively. 相似文献
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Ying-Jen Chen 《国际生产研究杂志》2018,56(13):4629-4643
As high-speed computing is crucial to empower intelligent manufacturing for Industry 4.0, non-volatile memory (NVM) is critical semiconductor component of the cloud and data centre for the infrastructures. The NVM manufacturing is capital intensive, in which capacity utilisation significantly affects the capital effectiveness and profitability of semiconductor companies. Since capacity migration and expansion involve long lead times, demand forecasting plays a critical role for smart production of NVM manufacturers for revenue management. However, the shortening product life cycles of integrated circuits (IC), the fluctuations of semiconductor supply chains, and uncertainty involved in demand forecasting make the present problem increasingly difficult in the consumer electronics era. Focusing on the realistic needs of NVM demand forecasting, this study aims to develop a decision framework that integrates an improved technology diffusion model and a proposed adjustment mechanism to incorporate domain insights. An empirical study was conducted in a leading semiconductor company for validation. A comparison of alternative approaches is also provided. The results have shown the practical viability of the proposed approach. 相似文献
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在农村人口结构转型的背景下,以农村普遍存在的几世同堂家庭为研究对象,将农村家庭分为“农业家庭”和“非农业家庭”,探讨适合“非农业家庭”的新型多层集合住宅模式,并引入“庭院式”多层集合住宅的设计理念,分析几世同堂家庭住宅内部的人性化设计,从而解决农村多代同堂的居住问题. 相似文献
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分析了煤热解产生煤气技术的节能及低污染排放机理,介绍了一种结合热电联产项目的多联产技术方案的节能减排措施及效果。 相似文献
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分布式能量系统浅析 总被引:10,自引:0,他引:10
现代分布式能量系统的出现是能源领域涉及可持续发展战略的一件大事。讨论了有关这一系统的一些基本概念,把它定义为“位于或临近用户中心、不以大规模、远距离输送电力为目的并具有环境相容性的电力总能系统”。分布式能量系统为热电联产和多联产的有效实施提供了最有利的系统形式,以分布式能量系统的方式耗用天然气可提高其经济性和与环境的相容性。认为,从长远的观点应把洁净煤也视为分布式能量系统的重要一次能源。微型透平是近年能源技术的一大成就,但在小型原动机领域中,内燃机仍具有旺盛的生命力。选择在发展大型集中式能量系统过程的同时不失时机、因地制宜地发展分布式能量系统,把它放在与之并行不悖且相辅相成的地位,以促进我国能源事业的可持续化发展。 相似文献
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