Rosier future for solar energy conversion

Recent progress in dye-sensitized solar cells （DSCs） research and development, which use innovative light-harvesting dye （the ＂sensitizer＂）to improve the optical absorption coefficient of the stained nanostructured electrodes, might color our seemingly dimming future energy security with a tint of rose, despite the looming depletion of fossil fuels. Costing only 10-20% as its silicon counterparts, the new devices might make it affurdable for much more people to utilize solar energy, a handy renewable energy source.     

Photocatalysis in solar fuel production

<正>With the increasing concerns on energy and environmental problems caused by the combustion of fossil fuels,solar energy becomes vitally important because it is the only viable renewable energy source that can replace the fossil fuels in     

Biomass power generation： toward a sustainable energy future

16 October, 2005 was a day of celebration for the Guangzhou Institute of Energy Conversion(GIEC), CAS, as its technology ofbiomass gasification and power generation (BGPG) was chosen by an evaluation panel of the United Nations Industrial Development Organization as one of the 10 top investment scenarios to apply new technologies for renewable energy utilization.     

Constrained future brightening of solar radiation and its implication for China's solar power

As Earth''s primary energy source, surface downward solar radiation (R_s) determines the solar power potential and usage for climate change mitigation. Future projections of R_s based on climate models have large uncertainties that interfere with the efficient deployment of solar energy to achieve China''s carbon-neutrality goal. Here we assess 24 models in the latest Coupled Model Intercomparison Project Phase 6 with historical observations in China and find systematic biases in simulating historical R_s values likely due to model biases in cloud cover and clear-sky radiation, resulting in largely uncertain projections for future changes in R_s. Based on emergent constraints, we obtain credible R_s with narrowed uncertainties by ∼56% in the mid-twenty-first century and show that the mean R_s change during 2050–2069 relative to 1995–2014 is 30% more brightening than the raw projections. Particularly in North China and Southeast China with higher power demand, the constrained projections present more significant brightening, highlighting the importance of considering the spatial changes in future R_s when locating new solar energy infrastructures.     

太阳能塔式热发电技术

本文从国际上太阳能热发电技术原理与方法、装备建造与成本、我国开展的相关研究所取得的阶段成果、未来的市场需求等方面,分析了我国发展聚光式太阳能热发电技术的可行性.阐明该项技术由于具有光-电转换系统效率高、建造运行成本较光伏发电低的优点,将是我国未来太阳能发电的首选目标.     

中国近期不存在能源危机

２００１年９月２７日，我国发行量最大的周报《南方周末》用半版刊登了“能源危机”的四篇文章，并加了编者按： “９月１１日，美国遭受国际恐怖势力袭击，与任何一次危机一样，国际原油市场再次因之剧烈震荡──每桶原油价格一度增高至３１美元。” “作为石油净进口国，中国２０００年石油消费量的３０％依赖进口……。２０２０年，石油进口率将达到５０％，……。在这样的情况下，中国的石油危机再次被提了出来。” 这里有两层意思：现在中国就面临能源危机，用首篇文章作者的话说，就是“石油危机就在眼前”。另一层意思是在未来２０…     

人类即将迎接太阳能时代

最近,中国科学技术大学陈应天教授撰写了一篇题为“从几百个太阳到上万个太阳”的文章,这篇文章有科学论据、实验结果和成本核算,以及对未来发展的构想,从而展示出人类将迎接太阳能时代的一种前景。为此,我们热心向中央领导、主管部门、社会公众推荐这篇文章,并据此提出建议。陈应天教授经长期研究,发展出新型数码光学理论和自动跟踪集聚太阳能光发电技术。该技术跟踪聚光极为精密,而且制造非常简单,运行持续稳定,得到世界上有影响的天文学家、太阳能专家的高度赞赏。这种技术不仅给太阳能聚光的高效性、经济性利用开辟了一条全新的途径,还…     

太阳能热泵中央热水系统

太阳能中央热水系统一般采用各种能源的锅炉作为辅助热源，本文提出了一种太阳能-热泵中央热水系统形式，介绍了其工作原理和各组成部分的设计要求以及工程应用实例。太阳能-热泵中央热水系统以太阳能辅助加热的空气源热泵机组作为太阳能系统的辅助热源，在北方寒冷地区冬季运行可靠稳定，全年综合节能率85％以上，是一种实用的环保节能技术，具有一定的推广应用价值。     

China-UK seminar on solar energy held in Beijing

Under the aegis of CAS and the Royal Society of London, a high-level Sino-UK seminar on solar energy convened in Beijing on 2 and 3 March.     

China-UK seminar on solar energy held in Beijing

Under the aegis of CAS and the Royal Society of London, a high-level Sino-UK seminar on solar energy convened in Beijing on 2 and 3 March. It was attended by some 30 scholars of research organizations and institutions of higher learning both from China and UK. CAS Vice President LI Jinghai delivered a speech at the meeting.     

Microalgae-material hybrid for enhanced photosynthetic energy conversion:a promising path towards carbon neutrality

Photosynthetic energy conversion for high-energy chemicals generation is one of the most viable solutions in the quest for sustainable energy towards carbon neutrality.Microalgae are fascinating photosynthetic organisms,which can directly convert solar energy into chemical energy and electrical energy.However,microalgal photosynthetic energy has not yet been applied on a large scale due to the limitation of their own characteristics.Researchers have been inspired to couple microalgae with synthe...     

西藏太阳能开发存在的问题及几点建议

在西部大开发的形势下,加快西藏的能源开发建设已是当务之急。西藏地处世界屋脊,海拔高,空气干燥,大气透明度好,云量少,加之日照时间长,纬度低,是全国太阳能资源最丰富的地区。但目前西藏太阳能开发利用上又存在着技术、开发资金、管理规划以及培训服务方面的诸多问题。如何制订有效的管理及发展体制和政策,解决西藏目前太阳能开发利用中存在的问题,是我们共同面对的一项重要课题。     

西藏太阳能产业发展思路

为寻求西藏太阳能产业发展途径,本文对西藏太阳能产业发展现状、存在问题进行了全面思考,提出了解决问题的对策和产业规划提纲.并从西藏的实际情况出发,指出了具有西藏特色太阳能产业的发展途径.     

用于太阳能热水器的流量自动控制系统

设计了一种以MSC51单片机为核心的,用于太阳能热水器的流量自动控制系统,阐述了该系统的结构组成与工作原理,提出了硬件和软件的设计方法,并给出了程序的部分框图。用此系统对太阳能热水器流量进行自动控制取得了很好的效果,同时,该系统还可用于其它需要自动流量控制的场合。     

Functional mesoporous materials in clean energy: an interview with Dongyuan Zhao

<正>National Science Review invited Prof. Dongyuan Zhao of Fudan University for an interview focusing on his team’s renowned research on functional mesoporous materials and energy-related applications. Prof. Zhao is a professor of chemistry and materials science, and a member of the Chinese Academy of Sciences. He received his PhD in chemistry from Jilin University in 1990. He has since focused his research on the synthesis and structure of porous materials and molecular sieves.     

Hierarchically structured porous materials: synthesis strategies and applications in energy storage

To address the growing energy demands of sustainable development, it is crucial to develop new materials that can improve the efficiency of energy storage systems. Hierarchically structured porous materials have shown their great potential for energy storage applications owing to their large accessible space, high surface area, low density, excellent accommodation capability with volume and thermal variation, variable chemical compositions and well controlled and interconnected hierarchical porosity at different length scales. Porous hierarchy benefits electron and ion transport, and mass diffusion and exchange. The electrochemical behavior of hierarchically structured porous materials varies with different pore parameters. Understanding their relationship can lead to the defined and accurate design of highly efficient hierarchically structured porous materials to enhance further their energy storage performance. In this review, we take the characteristic parameters of the hierarchical pores as the survey object to summarize the recent progress on hierarchically structured porous materials for energy storage. This is the first of this kind exclusively to survey the performance of hierarchically structured porous materials from different porous characteristics. For those who are not familiar with hierarchically structured porous materials, a series of very significant synthesis strategies of hierarchically structured porous materials are firstly and briefly reviewed. This will be beneficial for those who want to quickly obtain useful reference information about the synthesis strategies of new hierarchically structured porous materials to improve their performance in energy storage. The effect of different organizational, structural and geometric parameters of porous hierarchy on their electrochemical behavior is then deeply discussed. We outline the existing problems and development challenges of hierarchically structured porous materials that need to be addressed in renewable energy applications. We hope that this review can stimulate strong intuition into the design and application of new hierarchically structured porous materials in energy storage and other fields.     

Social movements and entrepreneurial activity: A study of the U.S. solar energy industry

We explore how the size of social movements and the ecology of their target industries influence entrepreneurial entry. By leveraging a 14-year panel in the solar energy industry, we demonstrate how a larger social movement stimulates entry. We reveal how this relationship is contingent upon the density of both the focal industry and the industries that are mutually connected to the cause of the movement, as well as the concentration of generalist firms. We demonstrate how larger social movements act in a compensatory role to elicit entry when ecological conditions are least favorable to entry. By uncovering the conditional influence of movements, we contribute to theory at the intersection of social movements and entrepreneurship.