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180,126 Research products, page 1 of 18,013

  • Energy Research

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  • Open Access
    Publisher: Hans Publishers

    燃气冷热电三联供(Combined cooling heating and Power system, CCHP)的设备间散热量大,需要合理其通风气流组织,保证设备间的温度满足设备运行最佳温度。通过实验方法确定通风方案成本过高,有必要利用模拟方式辅助设计通风系统。本文通过构建设备间三维数学模型,利用Fluent软件,对CCHP系统设备间的温度场进行数值分析,提出了气流组织形式的改进方案及相应的通风设计依据。按照改进后的通风系统,夏季在进风温度为室外设计温度307 k时,通过模拟分析利用增设冷风设备能够有效地降低发电机组运行的环境温度。...

  • Open Access
    Publisher: Hans Publishers

    纤维素是世界上存在最广泛的可再生生物质资源。本文综述了以纤维素为原料,开发替代能源研究进展,重点介绍了纤维素酶解和发酵生产乙醇研究进展与发展趋势,评述了纤维素制备乙醇的最新进展,旨在全面阐述纤维素在燃料乙醇制备中的应用。 Cellulose is one of the most widely used renewable resources in the world. In this article, we re-viewed the research progress of cellulose as raw materials to...

  • Open Access
    Publisher: Hans Publishers

    地热电站热效率低导致单位发电量所产生的凝汽器排热比火电站大得多,这使得凝汽器的运行参数优选对于地热电站的意义与火电站相比更为重要。本文分析了凝汽器运行参数对地热电站性能的影响规律,并基于肯尼亚某地热井机组进口参数,对不同凝汽器运行压力下的机组输出功进行了计算分析,得出了最优的凝汽器运行压力,本研究将为面向地热电站的凝汽器运行压力优选提供科学依据。 Due to the relatively low thermal efficiency of geothermal power plant, the steam condenser in ...

  • Open Access
    Publisher: Hans Publishers

    为了充分利用历史风速数据所蕴含的信息,本文根据风速和风电功率的日相似性提出基于聚类分析的短期功率预测方法,通过对原样本数据进行预处理,选取与预测日NWP特征参数相似的历史日数据,以此作为建立模型的训练样本,将气象部门提供预测日的NWP信息作为预测日的特征参数,计算特征参数间的欧式距离,以此作为相似性度量的依据,最后利用聚类后的相似样本建立预测模型,以NWP数据为输入参数,实际风电功率为目标值,经过训练后得到聚类风电功率短期预测模型。经实际风电场测试,预测精度明显提高。 In order to make full use of info...

  • Open Access
    Publisher: Hans Publishers

    在《太阳能集热器热性能试验方法》GB/T 4271的基础上,结合对两台不同类型的中温真空管型太阳能集热器的测试数据,提出了中温太阳能集热器的热性能测试方法的建议,给出了中温太阳能集热器的热性能结果表达方式,可以用于指导中温太阳能集热器热性能的测试。 Based on Chinese national standard “Test methods for the thermal performance of solar collectors GB/T4271” and test results from two different ty...

  • English
    Authors: 
    Chatterjee, Swarnendu;
    Publisher: Drexel University

    The rising demands of clean energy owing to a burgeoning global population and deteriorating climate has given rise to new avenues of research in electrocatalysis focusing on extraction and storage of energy through electrochemical reactions. In contrast to heterogeneou...

  • Open Access
    Publisher: Hans Publishers

    本文分析了肯尼亚的能源结构特点及其可再生能源的开发现状,介绍了Olkaria地区的地热资源特点;对传统的集中式电站和新型分布式井口电站的技术特性进行了对比研究,指出分布式井口地热电站在肯尼亚Olkari地区具有较好的应用前景,为地热电站的建站模式优选提供了科学参考。 This paper analyzed the feature of energy structures and current status of renewable energy de-velopment in Kenya. The characteristics o...

  • Open Access English
    Authors: 
    Omer Damdelen; Uğur Şeker;
    Publisher: Osman SAĞDIÇ

    Energy is the golden thread that connects economic growth, increased social equity, and an environment that allows the world to thrive. Access to energy is a necessary precondition to achieving many development goals that extend far beyond the energy sector, eradicating...

  • Closed Access
    Authors: 
    Helen Knight;
    Publisher: Elsevier BV

    A long discounted form of clean energy is ready for resurrection, thanks to some unexpected allies. Helen Knight reports

  • Authors: 
    Ciccu R.; Delogu F.;
    Country: Italy