Renewable energy scenario in Telangana

ABSTRACT

This article presents an analysis of the current situation of renewable energy in Telangana, India, and predicts the future of renewable energy resources in the state. In India, maximum power is generated using conventional energy sources such as coal and mineral oil. They highly pollute the atmosphere. If new power plants are to be set up, then the import of highly volatile fossil fuels is inevitable. Though nuclear energy is a good alternative to reduce fossil fuel consumption, it is equally hazardous to human life. Hence, the energy world should think of judicious use of renewable energy resources such as solar, wind, ocean, biomass, and geothermal energy. The R&D activities carried out in India in the past three decades have shown good progress in finding a feasible solution to the problem of searching new renewable energy resources. Telangana is the state committed to use the renewable resources in a better way to fulfil its electrical energy needs. This article also analyses the current energy needs of the state and forecasts energy consumption and production in the future with the aim of finding whether the state can continue on the path of development and augment its renewable energy resources.     

Renewable energy harvesting from water flow

The hydrokinetic energy of flowing water is plentiful, environment-friendly, renewable and can be harvested. This paper reports a new energy harvesting system using vortex-induced vibration (VIV). The proposed convertor harvests vibrations of a bluff body resulting from interaction of the alternating vortices created by the unsteady separation. These vortices are shed from the sides of the bluff body and form a pattern in the wake known as the von Kármán vortex street. The vortices create unsteady loading and induce vibrations with a predictable frequency and amplitude. Assisted by the bluff body with specific geometry and piezoelectric generators, the kinetic energy of the water flow can be converted into mechanical vibrations and electrical energy. In order to maximise the output energy of the harvester, the natural frequency of the mechanical system needs to lock into the frequency of the VIVs. Thus, the geometry of the bluff body has to be optimised to match the natural frequency of the convertor. This study examines the conceptual design of the physical model. The fluid–structure interaction model is applied to study the preliminary design. The maximum energy density that can be extracted by the proposed convertor from the water flow with velocities from 0.2 to 1 m/s is also estimated.Abbreviations: 1.CFD Computational Fluid Dynamics; 2.DC Direct Current (electricity); 3.FIM Fluid Induced Motion; 4.ODE Ordinary Differential Equation; 5.PTC Passive Turbulence Control; 6.VIV Vortex Induced Vibration; 7.VIVACE Vortex Induced Vibration Aquatic Clean Energy; 8.2D Two Dimensional     

节能建筑可再生能源技术研究

发展可再生能源技术不仅可以优化能源结构,为经济又好又快发展提供可持续的能源保障,而且可以开发新经济增长点,培育经济发展新优势;不仅有利于节能减排,建设生态文明,而且有利于增加就业,拉动消费,提高人民群众生活水平。本文描述了节能建筑的可再生能源技术,分析了其现状、存在问题及未来发展情况,并针对可再生能源的发展提出了建议。     

Renewable energy options for buildings: Case studies

This paper deals with a novel approach to study renewable energy options for buildings to make them more efficient, more cost effective, more environmentally benign, and more technologically attractive. To demonstrate the application of this study, four buildings are chosen as case studies with two from the residential sector, one commercial/institutional building, and one industrial building. A ground source heat pump for heating and cooling, a solar water heater for space heating and/or hot water, and a photovoltaic panel to generate electricity are designed for these case studies. Attempt is made to design projects under hybrid systems combined from two technologies are developed for the above-mentioned four cases. Results obtained indicate that solar thermal option for hot water and space heating becomes the most cost effective one for all cases (e.g., $4956 for Cases 1 and 2 and $70,652 for Case 3, and $91,361 for Case 4). In addition, solar electricity through PVs is technologically the most suitable one to meet the electricity demand. The ground source heat pump option is quite attractive from the efficiency and environmental impact point of views although it requires installation and maintenance, etc. Finally, hybrid systems provide better advantages, such as higher efficiency, reduced cost, reduced emissions, etc.     

Renewable energy potential and adoption of renewable portfolio standards

Thirty states have adopted renewable portfolio standards (RPSs) that set targets for renewable energy generation by mandating electric power utilities obtain a minimum percentage of their retail load from renewable sources. To date, a number of studies have consistently found that political and economic factors impact RPS adoption. Studies have also examined the impact of renewable energy potential in a state on the probability of RPS adoption, but results have largely been statistically weak and inconclusive. After controlling for political and economic factors, we estimate that a one standard deviation increase in wind potential is associated with an approximately 4.2 percentage point increase in the probability of having an RPS, and a one standard deviation increase in solar potential is associated with a 6.1 percentage point increase in the probability of having an RPS.     

"可再生能源与建筑集成技术研究与示范"项目——课题四/子课题:基于WebAccess的可再生能源示范建筑设备远程监测系统

引言 节能减排是国家“十一五”重点研究领域，它已经成为当今社会发展的重中之重，是推动人类社会发展的基石。建筑是可再生能源应用的重要领域，我国太阳能，浅层地能和生物能等资源十分丰富．在建筑用能中应用前景广泛。     

Renewable energy investors in Sweden: A cross-subsector analysis of dynamic capabilities

Tradable Green Certificates (TGC) schemes are among the prevalent policy frameworks to promote investments in Electricity from Renewable Energy Sources (RES-E). However, a technology-neutral design of the TGC system is coupled with uneven competition across renewable energy subsectors. The cost of RES-E technologies is often identified as the primary cause for this unevenness. This paper sheds light on additional explanatory factors for uneven competition, illustrating that investment paths vary across subsectors. Such paths can influence investor dynamic capabilities to explore new market opportunities and reinforce future investment behavior in each subsector. Empirical data from the Swedish TGC system for wind power, biopower, and hydropower are used for this analysis. The results indicate that investor dynamic capabilities related to cumulative experience and industrial diversification vary significantly across renewable energy subsectors. The findings are relevant to TGC program design.     

Renewable energy for passive house heating: Model of the active solar heating system

The large windows on the south-oriented façade of a passive house strongly contribute to building space heating. These windows constitute the passive solar heating system. This paper studies the active heating system of a passive house, which includes the following sub-systems: (1) solar thermal collectors, (2) a water storage tank, (3) a secondary water circuit, (4) a domestic hot water preparation system and (5) an air ventilation and heating system. Models for all sub-systems are presented. The integrated model was implemented to Pirmasens Passive House (Rhineland Palatinate, Germany). The active solar heating system provides a smaller amount of heat than the heat provided by the passive solar heating system. Almost all the solar energy collected is not used for space heating but to domestic hot water (DHW) preparation. However, there is still a need for the classical water heater to operate all over the year. Almost all space heating thermal load is covered by using the classical air heater that operates mainly during the nights from November to April. The solar fraction lies between 0.180 in February and 0.679 in October, with a yearly average of 0.446. The study reveals that on a yearly basis it is more advantageous to use vertical south-oriented solar collectors instead of roof placed collectors.     

Renewable energy project implementation: Will the Baltic States catch up with the Nordic countries?

The research identifies and describes administrative procedures for implementing RES electricity generation infrastructure projects in Baltic and Nordic countries. The administrative processes of installing small to large solar parks and onshore wind farms for electricity generation were assessed, looking at several criteria such as the timeline, complexity, information availability, impact of public opinion, and local authorities (municipalities). The methodology developed allows evaluating administrative procedures using a multi-criteria analysis method, resulting in a single-score quantification that can be further utilized in complex energy simulation models. The obtained results allow identifying the potential recommendations for process optimization in the analysed countries. For instance, the introduction of a single point of contact as in Norway, the consolidation of the environmental impact assessment and spatial planning phases as in Finland, and the simplification of the microgeneration and small-scale installation permitting process as in Lithuania.     

可再生能源在建筑中的推广运用--建设部科技司司长赖明在可再生能源在建筑中推广使用工作会议上的讲话

首先非常感谢财政部对建设部的建筑节能工作,尤其是最需要政府扶持的可再生能源在建筑中应用工作的支持,财政部金人庆部长、朱志刚副部长和经济建设司胡静林司长、曾晓安副司长等对可再生能源在建筑中应用工作给予了高度的关心和支持。同时也非常感谢地方财政厅、建设厅对地方建筑节能工作的支持和推进。建筑节能工作,包括可再生能源建筑应用工作,仅靠中央定目标、定方向是不够的,一定要通过地方有关部门通力合作才能完成。长期以来,地方建设厅(局、委)和建设部共同在建筑节能和可再生能源建筑应用方面通力合作并取得了良好的成效,这为下一…     

加拿大的可再生能源项目

加拿大是一个拥有多品种能源的国家,水力资源(包括小规模．中等规模和大规模)是最重要的可再生能源,它占到主要能源的11％和电力能力的60％。生物能是第二大的可再生能源,占到主要能源的6％。由于技术的发展,利用废水．谷物的酒精、风能和光电池的产生的能源在迅速增长。像中国一样,在加拿大的边远地区对这些技术的需求量是最大的。     

绿色住宅建设中的可再生能源技术

近年绿色建筑和可再生能源技术越来越得到社会和业界的认同,文章从近年来在智能小区建设中常用的太阳能发电、风力发电、太阳导光管照明、太阳能灯具、LED节能灯、太阳能热水、中水回收和雨水收集利用、地源和水源热泵等方面入手,阐述采用可再生能源技术的应用前景及其重要作用.     

再生能源在住宅小区建设工程中的应用实例

文章介绍了太阳能建筑一体化技术和太阳能光伏电技术在"琥珀名城"A区的应用情况,为可再生能源技术在本地区住宅中的应用提供借鉴。     

可再生能源在高校中的应用研究

高校在培养人才的同时,也消耗了大量的能源资源。建设节约型校园是高校发展中面临的重要任务之一。结合具体的工程实例,阐述了中水源热泵技术、太阳能光热和光电技术、能源回收利用技术等可再生能源技术在不同类型建筑中的应用,为高校建筑节能提供参考。