中国新能源上市公司成长性评价研究

发展新能源产业是我国实现能源结构转型和发展低碳经济的重要途径，研究新能源行业上市公司的成长性有助于了解新能源产业的发展态势。本文分析了影响中国新能源上市公司成长性的关键因素，并构建成长性评价指标体系，收集36家新能源上市公司2011～2015年的面板数据，采用因子分析对我国新能源上市公司的成长性进行综合评价，并对不同类型的新能源上市公司成长性进行对比分析。研究表明，我国新能源上市公司整体成长性偏低，多数企业追逐短期盈利，各分项能力发展不均衡；不同类型的新能源上市公司成长性和各分项能力存在较大差异。     

Value for money in energy efficiency retrofits in Ireland: grant provider and grant recipients

The Sustainable Energy Authority of Ireland (SEAI) administers the Better Energy Homes scheme to provide a financial incentive for home owners to engage in energy efficiency retrofits. This study analyses data from the scheme and Building Energy Rating data for participants to the scheme to examine the value for money achieved by households. In addition, this research identifies which retrofit combinations provide greatest value for money, in terms of energy efficiency gains, for the grant provider. We utilize an error-in-variables approach to model the variation in benefits accruing to households of varying characteristics. We find that household and grant provider surplus can be maximized in the short term by retrofitting less energy efficient and larger homes, timber or steel frame homes and houses rather and apartments. The types of retrofits leading to the greatest surplus for both household and grant provider include cavity wall insulation paired with either a boiler with heating controls or heating controls only retrofit.     

Cleanliness and consumption: exploring material and social structuring of domestic cleaning practices

In line with increasing international trends of energy efficient devices on the market and in households, domestic consumption of water and energy should be decreasing. However in Sweden, domestic per capita water consumption is not decreasing rapidly and energy consumption is actually increasing. This suggests that physical contexts are not the only factor shaping resource demand. People are also influenced by collective conventions; what we think is normal has a significant say in what we do, and the resources we consume in the course of everyday life. This paper explores the way context shapes what people do from both a material infrastructures and social infrastructures perspective, using cleanliness in Sweden as a case study. First, material infrastructures in Sweden are mapped, including device ownership, water, energy and time consumed related to cleanliness. Second, qualitative interviews with Swedish people aim to show the social structuring of cleanliness. Understanding the interplay between physical and social structures has potential implications for decreasing resource intensity in everyday life.     

The rhetorical fantasy of energy transitions: implications for energy policy and analysis

This article explores the rhetoric of four energy transitions. It begins by summarising research on the intersection of fantasy, technology and the sociology of expectation. It then looks at how ideas of progress, modernity, cheapness, abundance and hope influence the way society perceives new energy technologies, causing them to overestimate benefits and underestimate challenges. Our rhetorical analysis finds in case studies of steam engines, gasoline automobiles, hydroelectric dams and nuclear reactors that newly ‘discovered’ sources of energy or newly invented technologies are always assumed to provide infinitely abundant energy and to have the potential to create positive utopian changes in society. We conclude by noting the salient implications of these rhetorical themes for energy planners, analysts and scholars.     

Contrasting Developments in UK Energy Regulation: Retail Policy and Consumer Engagement

This article explores the role of regulation as a supporting institution for an energy market. Two aspects are examined: first, the role of regulation in promoting a competitive market for the retail supply of energy, and second, the role of regulation in providing access to the transmission and distribution networks, assumed to be monopolies, that provide services for the retail suppliers. UK regulation promoted retail energy competition until 2008, but in that year changed direction, and since then has been restricting retail competition. In contrast, UK regulation since 2008 has encouraged more customer engagement in the network part of the energy sector. This offers the prospect, at least, of the emergence of a form of competition and choice in the process of setting price controls.     

浅谈电气节能在建筑工程中的运用

本文通过介绍电气节能设计应遵循的原则,着重阐述了建筑电气节能设计中线路损耗、变压器的选择、照明节能、电动机节能、空调系统节能、给排水节能等多个方面的节能技术措施,以及在建筑工程中的应用。     

中国汽车产业的外向发展与节能减排

中国汽车产业的产销量一直呈现良好的上升趋势。但在金融危机下,受国内外环境和政策的影响,中国汽车产业产销量的增速有所放缓,汽车的价格受市场竞争程度和供求状况等因素的影响出现了波动。为了保证中国汽车产业的平衡发展,更好地实现可持续发展,需要加快汽车产业节能减排的步伐。     

高压变频器在电厂凝结水泵上的应用

文章论述了高压变频器在燃煤发电厂大容量电动机上应用的必要性,介绍了凝结水泵的变频改造方案,分析了高压变频器改造的经济性,为同类型发电厂的节能降耗提供了借鉴经验和参考。     

关于项目建设中的节能

我国是世界上能源利用效率最低的国家之一。从工业的能源效率来看,目前我国的能源综合利用比发达国家低大约10个百分点,总效率约为33%;因此,在项目建设中必须节能,本文提出节能思想应贯穿于整个项目,并结合工程实例介绍了项目的资源节约措施。     

能源研发与内生经济增长

本文在内生经济增长理论的基础上,建立含能源研发的经济增长模型,借助动态优化的方法,分析能源研发对经济增长的关键作用。研究结果表明:能源研发活动具有规模收益递增的特点,对能源供应源的扩张具有特殊贡献,有助于经济摆脱能源的约束,实现可持续增长。