显示样式:     当前期刊: Renewable & Sustainable Energy Reviews    加入关注       排序: 导出
我的关注
我的收藏
您暂时未登录!
登录
  • Are promotion programs needed to establish off-grid solar energy markets? Evidence from rural Burkina Faso ☆
    Renew. Sust. Energy Rev. (IF 8.05) Pub Date : 2017-12-27
    Gunther Bensch, Michael Grimm, Maximilian Huppertz, Jörg Langbein, Jörg Peters

    Off-grid solar electric power is a promising technology for remote regions in rural Africa where expansion of the electricity grids is prohibitively expensive. Using household data from a target region of an off-grid solar promotion program in the Kénédougou province in Burkina Faso, this paper explores the role of quality-verified branded solar home systems (SHS) versus non-branded ones. We find that the adoption rate of non-branded SHS is considerably higher at 36% compared to 8% for branded SHS. We compare potential quality differences as well as the cost-effectiveness of branded and non-branded solar products. We show that non-branded SHSs offer a similar service level as branded solar, that they do not fall behind in terms of consumer satisfaction and durability, and that non-branded products are more cost-effective. These findings suggest that promotion programs and branded solar products do not seem to be necessary in Burkina Faso and might also not be needed to establish sustainable off-grid solar markets elsewhere provided that non-branded products are available. The challenge however is to reach the very poor who are unable to bring up investment costs for any electricity.

    更新日期:2017-12-27
  • A novel strategy for sequestering atmospheric CO2: The use of sealed microalgal cultures located in the open-oceans
    Renew. Sust. Energy Rev. (IF 8.05) Pub Date : 2017-10-06
    Ron G. Smith, Ian J. Smith, Brendan D. Smith

    Here we introduce the concept of utilizing microalgal cultures grown in sealed enclosures located in open-oceans to sequester CO2 from both the atmosphere and flue gases. This method of sequestering CO2 overcomes the major limitations of sequestering appreciable CO2 using existing technologies, such as microalgae cultured in open ponds, photobioreactors, or continuous bioreactors on land or near shore. Open ponds require vast surface areas and generally have low net productivity due to light and temperature limitations during the night and winter periods. Continuous algal bioreactors are much more productive, but this comes at the expense of controlling the parameters of the bioreactors, such as light regimes and temperature. The additional energy inputs used to control the parameters of the bioreactors negate their effectiveness of sequestering CO2 on a global scale. Near shore photobioreactors lack the capacity to be scaled up to sequester appreciable CO2. Alternatively, we propose that atmospheric CO2 and/or the flue gases (containing CO2, NOx and SOx) can be collected and transferred to enclosed vessels or bags containing algal cultures situated in the open-oceans. The productivity of the enclosed cultures could be optimized by moving the bags to various locations in the oceans, allowing for control of temperature, irradiance, and hours of daylight. Theoretical calculations using demonstrated CO2 sequestration efficiencies and production rates of microalgal batch cultures suggest that 4 cylindrical enclosures, each with a diameter of 100 m and a depth of 40 m would be able to sequester the CO2 emitted by a 500 MW coal-fired generating plant. On a grander scale, using the same CO2 consumption rates and the enclosures described above, roughly 14,000 enclosures could reduce the CO2 in the troposphere by 1 ppm on a yearly basis, representing half of the total CO2 added to the atmosphere annually.

    更新日期:2017-12-27
  • Research and developments on solar assisted compression heat pump systems – A comprehensive review (Part-B: Applications)
    Renew. Sust. Energy Rev. (IF 8.05) Pub Date : 2017-09-12
    M. Mohanraj, Ye. Belyayev, S. Jayaraj, A. Kaltayev

    The second part of this review presents a comprehensive review on applications of solar assisted compression heat pump systems and its associated research potentials. The reported investigations on solar assisted heat pumps are categorized into five major groups as follows: (a) drying, (b) room space heating; (c) agricultural green house space heating, (d) water heating and (e) desalination applications. Most of the reported investigations in open literature are reviewed. The study will then presents the major limitations of solar assisted compression heat pumps and further research tasks in various applications. This paper concludes that solar assisted compression heat pump system is the promising equipment used for heating applications. The information presented in the second part of the review is beneficial to the researchers, energy experts and decision makers in the field.

    更新日期:2017-12-27
  • Research and developments on solar assisted compression heat pump systems – A comprehensive review (Part A: Modeling and modifications)
    Renew. Sust. Energy Rev. (IF 8.05) Pub Date : 2017-09-06
    M. Mohanraj, Ye. Belyayev, S. Jayaraj, A. Kaltayev

    This paper presents a comprehensive review on research and developments on solar assisted compression heat pump systems, mostly reported during the last two decades. The first part of this paper provides a detailed description of the past efforts on various system configurations, system modeling, enhancement of system performance, modifications in compression heat pump cycles and environment friendly refrigerant options for solar assisted compression heat pump systems. The economical and environmental impacts of solar assisted compression heat pump systems are also described. Further research needs in this important field of solar assisted compression heat pump are listed. The outcomes of this review confirm that, there is a lot of research scope for improving the performance of the system and reducing its initial cost to make it competitive in the global market. The information presented in this paper is shall be highly beneficial for the active researchers working presently on solar assisted compression heat pumps.

    更新日期:2017-12-27
  • Long-run power storage requirements for high shares of renewables: Results and sensitivities
    Renew. Sust. Energy Rev. (IF 8.05) Pub Date : 2017-07-19
    Wolf-Peter Schill, Alexander Zerrahn

    We use the model DIETER, introduced in a companion paper, to analyze the role of power storage in systems with high shares of variable renewable energy sources. The model captures multiple system values of power storage related to arbitrage, capacity, and reserve provision. We apply the model to a greenfield setting that is loosely calibrated to the German power system, but may be considered as a more generic case of a thermal power system with increasing shares of variable renewables. In a baseline scenario, we find that power storage requirements remain moderate up to a renewable share of around 80%, as other options on both the supply and demand side may also offer flexibility at low cost. Yet storage plays an important role in the provision of reserves. If the renewable share further increases to 100%, the need for power storage grows substantially. As long-run parameter assumptions are highly uncertain, we carry out a range of sensitivity analyses. As a general finding, storage requirements strongly depend on the costs and availabilities of other flexibility options, particularly regarding flexible power generation from biomass. We conclude that power storage becomes an increasingly important element of a transition toward a fully renewable-based power system, and gains further relevance if other potential sources of flexibility are limited.

    更新日期:2017-12-27
  • Socio-economic and health benefits of renewable energy using improved cooking stoves: A theoretical perspective
    Renew. Sust. Energy Rev. (IF 8.05) Pub Date : 2017-07-03
    Muhammad Abrar-ul-Haq, Mohd Razani Mohd Jali, Muhammad Atif Nawaz

    Most of the people, in developing countries, live under sustenance in rural areas and are dependent upon agriculture and use traditional biomass as a source of energy. Due to changing climate, this dependence on agriculture and traditional biomass makes them more vulnerable and deteriorates the environment as well. Therefore, this study attempts to highlight the potential of using renewable energy options to reduce this vulnerability. The research focuses on solar energy and efficient use of biomass through improved cooking stoves. The issue of reducing vulnerability is addressed by looking at the use of solar energy and enhanced individuals’ adaptive capacity with the use of improved cooking stoves. It is concluded that the use of solar energy and efficient use of biomass reduce individuals’ vulnerability to climate change and improve their health, income, education, and social life. It also shows that both solar energy and improved cooking stoves have environmental benefits.

    更新日期:2017-12-27
  • Thermoelectric applications for energy harvesting in domestic applications and micro-production units. Part I: Thermoelectric concepts, domestic boilers and biomass stoves
    Renew. Sust. Energy Rev. (IF 8.05) Pub Date : 2017-06-07
    Lauri Kütt, John Millar, Antti Karttunen, Matti Lehtonen, Maarit Karppinen

    This review aims to present a summary of the current state of art in applications incorporating thermoelectric generator (TEG) units. Description of components critical to TEG system analysis will be provided. Especially practical results available from testing of the experimental systems will be addressed. The review is split in 2 parts, with first part covering TEG fundamental operating principles and materials, the power electronic converters of the TEG loading system, with applications of domestic boilers and biomass stoves. Second part of the review will provide overview of the solar energy harvesting TEG applications.

    更新日期:2017-12-27
  • Energy security and renewable energy policy analysis of Pakistan
    Renew. Sust. Energy Rev. (IF 8.05) Pub Date : 2017-06-07
    Tauseef Aized, Muhammad Shahid, Amanat Ali Bhatti, Muhammad Saleem, Gabrial Anandarajah

    Sustainable energy supply is an important factor for continued economic growth of any society. Pakistan is among those developing countries which are facing severe shortages of energy now-a-days. The current and past governments in the country have designed various energy policies to fulfill energy demands but could not fill the demand-supply gap; there has been a shortage of about 5000 MW of electrical supply during summer 2016. A policy for development of renewable energy was framed in 2006 which was aimed to supply sustainable energy to all consumers including those households which have not been supplied electricity and natural gas in rural and far-flung areas. The policy was extended for implementation in 2011 and is still in use. The basis of this policy rests on energy security and self-sufficiency, social equity and economic benefits. This study aims at analyzing renewable energy policy of Pakistan and examining and finding the ways to secure energy supplies in future using LEAP. Four Scenarios, business-as-usual, green Pakistan, nuclear and optimization, have been developed to assess the validity of the energy plans. The study concludes that green Pakistan scenario employing renewable energy technologies, having minimum operation and externality costs, is the most suitable option in future.

    更新日期:2017-12-27
  • Future views on waste heat utilization – Case of data centers in Northern Europe
    Renew. Sust. Energy Rev. (IF 8.05) Pub Date : 2017-11-13
    Mikko Wahlroos, Matti Pärssinen, Samuli Rinne, Sanna Syri, Jukka Manner

    In this study the potential for data center waste heat utilization was analyzed in the Nordic countries. An overview of upcoming data center projects where waste heat is utilized is presented. Especially in Finland data center operators are planning to reuse waste heat in district heating. However, business models between the district heating network operator and data center operator are often not transparent. The implications of economics and emissions on waste heat utilization in district heating were analyzed through life cycle assessment. Currently the biggest barriers for utilizing waste heat are the low quality of waste heat (e.g. low temperature or unstable source of heat) and high investment costs. A systematic 8-step change process was suggested to ensure success in changing the priority of waste heat utilization in the data center and district heating market. Relevant energy efficiency metrics were introduced to support rational decision-making in the reuse of waste heat. Economic calculations showed that the investment payback time is under the estimated lifetime of the heat pump equipment, when waste heat was utilized in district heating. However, the environmental impact of waste heat utilization depends on the fuel, which waste heat replaces.

    更新日期:2017-12-12
  • Solar heating and cooling systems by absorption and adsorption chillers driven by stationary and concentrating photovoltaic/thermal solar collectors: Modelling and simulation
    Renew. Sust. Energy Rev. (IF 8.05) Pub Date : 2017-11-13
    Annamaria Buonomano, Francesco Calise, Adolfo Palombo

    Solar heating and cooling systems are a promising technology which may significantly contribute to the reduction of greenhouse gas emissions, the enhancement of energy efficiency, and the increase of renewables share in the building sector. The available literature show a high number of papers aiming at investigating solar heating and cooling systems based on heat driven and solar technologies, configurations, operating strategies, and financing issues. Nevertheless, none of the papers available in literature investigates the possibility to replace conventional solar thermal collectors by flat plat and concentrating photovoltaic/thermal systems, also producing renewable electricity. To cover this lack of knowledge, in this paper a dynamic simulation model of novel solar polygeneration heating and cooling systems is presented. Such dynamic simulation model is developed and implemented in a computer code, written in MatLab, and allows investigating the energy, economic and environmental performance of such novel solar polygeneration systems, based on both adsorption and absorption chiller technologies fed by dish-shaped concentrating and flat photovoltaic/thermal collectors. In order to show the potentiality of the presented tool, a comprehensive parametric case study is carried out to find out the optimal system configurations, as a function of crucial design and operating parameters and of weather conditions. The presented case study analysis refers to a small cluster of four buildings, including office and residential spaces, located in different European weather zones. The modelled solar polygeneration systems simultaneously produce electricity, space heating and cooling, and domestic hot water; electricity is self-consumed or delivered to the electrical grid. For comparative purposes, two different back-up system configurations, based on an electric chiller and a condensing gas-fired heater are also taken into account as conventional reference building-plant systems. By means of this systematic parametric analysis, comprehensive guidelines for system designers, practitioners and/or researchers focused on the development and use of solar heating and cooling systems are provided.

    更新日期:2017-12-12
  • Sustainable development of energy, water and environment systems 2016
    Renew. Sust. Energy Rev. (IF 8.05) Pub Date : 2017-11-11
    Tomislav Pukšec, Paul Leahy, Aoife Foley, Natasa Markovska, Neven Duić

    This paper presents the editorial for the Renewable and Sustainable Energy Reviews joint special issue devoted to the research work discussed and presented at the 11th Conference on Sustainable Development of Energy, Water and Environment Systems (SDEWES), held from the 4th September to the 9th September 2016 in Lisbon, Portugal and the 2nd South East European (SEE) SDEWES Conference held from June 15th to June 18th, 2016 in Piran, Slovenia. This special issue is in line with the journal's aim of publishing research from across the ever-broadening field of renewable and sustainable energy with a strong review element. Previous SDEWES conference special issues have gathered a significant knowledge base in the field of sustainable development that reflects the continuous research efforts of the SDEWES research community. Therefore, this editorial provides not only an overview of the papers published in this particular special issue, but also a wider overview of the current trends in the domain of sustainable and renewable energy. This year's special issue focuses particularly on the benefits of the bio-based economy, energy security issues, fossil fuel thermal plant alternatives and environmental constraints, district heating and cooling together with cross sector energy efficiency and energy conservation issues. Sustainable transport systems, the issue of fuel poverty in urban neighbourhoods and renewable energy to support development of peripheral rural areas, optimising passive building design for hot climates and solar-powered heating and cooling are further topics featured in this special issue. In the process of selecting papers for this special issue, the guest editors invited in total 23 extended manuscripts for consideration for publication. After a rigorous review process by expert reviewers overseen by the guest editors a total of 16 articles were accepted for publication.

    更新日期:2017-12-12
Some contents have been Reproduced with permission of the American Chemical Society.
Some contents have been Reproduced by permission of The Royal Society of Chemistry.
化学 • 材料 期刊列表
南方科技大学“千人计划学者”讲座教授郑智平团队招聘启事
中山大学功能生物医用材料团队招聘博士后(待遇每年25万起)
华南理工大学生物科学与工程学院青年千人陈庭坚教授课题组招聘启事
东莞理工学院高薪招聘“有机合成/催化”博士后【48万年薪 + 若干科研启动费】
华南理工大学“青年千人”马志强课题组招聘启事
【问答】请问延长锂空气电池寿命的关键因素是什么?
2017年中科院JCR分区化学大类列表
试剂库存管理
化合物查询
down
wechat
bug