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2015 3rd International Conference on Green Energy and Technology (ICGET)最新文献

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Green spaces: Assets or liabilities? An economic study on the urban residential neighbourhood of Dhaka 绿色空间:资产还是负债?达卡城市居民区的经济研究
Pub Date : 2015-11-09 DOI: 10.1109/ICGET.2015.7315093
F. Sharmin, Bushra Nayeem
Within the context of the economic valuation of open space, the presence and absence of green space has an effect on the residential property value in urban areas. This study only concerns with the valuation of open spaces; especially green parks and water bodies of different urban residential neighborhoods of Dhaka city in Economic terms. To analyze the impact of open space attributes on real price of residential properties, an empirical analysis is carried out by employing Hedonic Price Method (HPM). Together with a set of structural, location and socio-economic variables use to explain residential property prices; the study focuses on three amenity or environmental variables which include the existence of views of park, the distance from the housing unit to the nearest open space, and the size of that open space. The regression analysis results from the first stage hedonic estimation reveal that homebuyers are willing to pay only for scenic views and living in the closest proximity to open spaces especially green parks. In contrast results for the size of the nearest open space for houses do not show a significant relationship on nearby property values. This estimated valuation of open spaces and their amenity benefits will be useful for decision making in urban design, land use planning and green space preservation.
在开放空间经济评估的背景下,绿地的存在和缺失对城市住宅物业价值产生影响。本研究只关注开放空间的价值;特别是达喀市不同城市居民区的绿色公园和水体。为了分析开放空间属性对住宅物业实际价格的影响,本文采用Hedonic price Method (HPM)进行实证分析。结合一系列结构、位置和社会经济变量来解释住宅物业价格;该研究侧重于三个舒适或环境变量,包括公园景观的存在,住房单元到最近开放空间的距离,以及开放空间的大小。第一阶段享乐估计的回归分析结果显示,购房者只愿意为风景买单,并且居住在离开放空间尤其是绿地公园最近的地方。相比之下,最近的房屋开放空间大小的结果与附近的财产价值没有显着关系。休憩用地的估价及其美化环境的效益,可为城市设计、土地用途规划及保存绿地的决策提供参考。
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引用次数: 1
Alternative technology for cooling 替代冷却技术
Pub Date : 2015-11-02 DOI: 10.1109/ICGET.2015.7315114
Kutub Uddin, T. Miyazaki, B. Saha, S. Koyama
To provide thermal comfort to the human being many types of cooling technologies are available in the market. These technologies are more essential in the region where the average ambient temperature is high. But every system has some limitations especially for environmental aspect and energy consumption. Open literature shows the available commercial cooling technology used almost 45% of electricity consumed in a house. To keep the system running a lot of fossil fuels need to be burned as a result the volume of greenhouse gases into the air increases. This study introduces a new technology which is emerging as viable alternatives of conventional vapor-compression systems and is known as adsorption cooling system. This system is environment friendly since it uses natural refrigerants and it is driven by low temperature waste heat or solar energy that is why it can solve the existing challenge of global warming and energy crisis.
为了给人类提供热舒适,市场上有许多类型的冷却技术。这些技术在平均环境温度较高的地区更为重要。但每一种系统都有一定的局限性,特别是在环境和能耗方面。公开文献显示,现有的商业冷却技术几乎消耗了家庭用电量的45%。为了保持系统的运行,需要燃烧大量的化石燃料,因此,进入空气中的温室气体量增加了。本研究介绍了一种新技术,它是传统蒸汽压缩系统的可行替代方案,被称为吸附冷却系统。该系统使用天然制冷剂,由低温废热或太阳能驱动,对环境友好,因此可以解决现有的全球变暖和能源危机挑战。
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引用次数: 1
A hybrid of 30 KW Solar PV and 30 KW Biomass System for rural electrification in Bangladesh 用于孟加拉国农村电气化的30千瓦太阳能光伏和30千瓦生物质混合系统
Pub Date : 2015-09-01 DOI: 10.1109/ICGET.2015.7315078
Sayed Ahammad, A. H. Khan, Tabassum E. Nur, S. Ghose
This paper is mainly addressing the design and analysis of a hybrid Solar and Biomass System for rural electrification in a remote area in Bangladesh by Decentralized Distributed Generation & Rural Power Distribution Management. Energy is crucial input in the process of economic, social and industrial development. Energy plays a vital role in our daily life. But the conventional source of energy to produce electricity is decreasing day by day significantly. In this regards non-conventional or renewable energy resources such as bio-energy, Solar, Wind, Ocean and Geothermal are taking this challenge. A large proportion of the world's population lives in remote rural areas and far away from grid. The installation and distribution costs are considerably higher for remote areas. Moreover, there is greater transmission line losses and poor supply reliability. There is growing interest in harnessing renewable energy sources since they are available in abundance, pollution free and inexhaustible. Not only that, The combining of technologies means Hybrid technology provides interesting opportunities to overcome certain technical limitations and to mitigate fuel price increases, deliver operating cost reductions, and offer higher service quality than traditional single-source generation systems. A hybrid system is a dynamic system that exhibits both continuous and discrete dynamic behavior a system that can both flow and jump.
本论文主要是通过分散式分布式发电和农村配电管理来解决孟加拉国偏远地区农村电气化的太阳能和生物质混合系统的设计和分析。能源是经济、社会和工业发展过程中的重要投入。能源在我们的日常生活中起着至关重要的作用。但是用于发电的传统能源正在日益减少。在这方面,非传统或可再生能源,如生物能源、太阳能、风能、海洋和地热正在接受这一挑战。世界上很大一部分人口生活在偏远的农村地区,远离电网。偏远地区的安装和配送成本要高得多。此外,输电线路损耗大,供电可靠性差。人们对利用可再生能源越来越感兴趣,因为它们储量丰富,无污染,取之不尽,用之不竭。不仅如此,技术的结合意味着混合动力技术提供了有趣的机会,可以克服某些技术限制,缓解燃料价格上涨,降低运营成本,并提供比传统单源发电系统更高的服务质量。混合系统是一种既具有连续动态行为又具有离散动态行为的动态系统,是一种既能流动又能跳跃的动态系统。
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引用次数: 9
Solid State Lighting can resolve the present power crisis in Bangladesh 固态照明可以解决孟加拉国目前的电力危机
Pub Date : 2015-09-01 DOI: 10.1109/ICGET.2015.7315100
M. Rhaman, M. Matin, T. Toshon
Power crisis is the most concerning problem in Bangladesh for the past few decades. Despite a lot of attempts by the Bangladesh Government, due to increasing population & rapid industrial growth, this problem seems to be augmenting day by day. Energy preservation is the result of financial capital increase of the country and also increases the environmental values. Being a developing country, Bangladesh lacks the utilization of renewable energy sources, so almost majority of the power generation techniques are based on Fossil Fuel, Gas and Coal, which is created air and water pollution, also negative impact on global calamity. So, to solve the power crisis, alternative means are needed to be taken account of. If power consumption can be reduced somehow, then with the present generation capacity, it would be possible to generate power in coherence with the demand of the consumers. In this paper, we have discussed about how Solid State Lighting (SSL) like Light Emitting Diode (LED) can reduce the daily power consumption in Bangladesh. SSL offers many benefits such as long life, energy saving, better quality light and so on, only one drawback is initially high cost which is not accountable for long terms use. By utilizing the features of SSL the power consumption in Bangladesh can be reduced significantly. We have represented the features of solid state lighting compared to other means of lighting sources. We have shown LEDs prospective contribution in reducing the power consumption with necessary calculations and statistics.
在过去的几十年里,电力危机是孟加拉国最令人担忧的问题。尽管孟加拉国政府做了很多努力,但由于人口增长和工业快速增长,这个问题似乎日益严重。节能是国家财政资本增加的结果,同时也增加了环境价值。作为一个发展中国家,孟加拉国缺乏对可再生能源的利用,因此几乎大多数发电技术都是基于化石燃料,天然气和煤炭,这造成了空气和水污染,也对全球灾难产生了负面影响。因此,为了解决电力危机,需要考虑替代手段。如果能以某种方式减少电力消耗,那么以目前的发电能力,就有可能产生与消费者需求一致的电力。在本文中,我们讨论了像发光二极管(LED)这样的固态照明(SSL)如何减少孟加拉国的日常耗电量。SSL提供了许多优点,如长寿命,节能,更好的光质量等,唯一的缺点是最初的高成本,不负责长期使用。通过利用SSL的特性,孟加拉国的电力消耗可以显著降低。我们已经介绍了固态照明与其他照明方式的特点。我们已经通过必要的计算和统计显示了led在降低功耗方面的预期贡献。
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引用次数: 1
Design, implementation and cost analysis of a solar powered water pump for multistoried building 多层建筑太阳能水泵的设计、实施及成本分析
Pub Date : 2015-09-01 DOI: 10.1109/ICGET.2015.7315110
Mohammad Rejwan Uddin, Mohammad Rabiul Hossen, K. M. Salim
Electric motors are used to pump water in multistoried building. Total power consumed by those motors is huge in urban area. By implementing a renewable energy source to run those motors can save energy from national grid. The purpose of this paper is to provide information about planning and installation of solar powered water pumping systems by using Thin Film PV (Photo Voltaic) Module. 20 panels of 95 Watt are mounted by using movable concrete pillar for flexibility. A 3D design was created by using SketchUp 3D to bring perfection in mounting solar panels. A three phase inverter is used to operate with higher output voltage of Thin Film PV Module. To avoid starting torque and maintenance cost, a three phase 2 HP AC water pump is used for pumping water. A four storied building is considered to lift water from reserve tank on ground. The system has been tested successfully in delivering 500 liter water in 17 minutes to the over head reserve tank at broad sunlight. Total cost for installing this project is also analyzed in this paper.
在多层建筑中,电动机用于抽水。在城市地区,这些电机消耗的总功率是巨大的。通过采用可再生能源来运行这些电机,可以节省国家电网的能源。本文的目的是提供关于利用薄膜PV(光伏)模块规划和安装太阳能水泵系统的信息。20块95瓦的面板采用可移动的混凝土支柱安装,以提高灵活性。使用SketchUp 3D创建了一个3D设计,以完美地安装太阳能电池板。采用三相逆变器使薄膜光伏组件的输出电压更高。为避免启动扭矩和维护成本,水泵采用三相2hp交流水泵。一个四层楼的建筑被认为是从地面上的蓄水池中抽水。该系统已经在17分钟内成功地在阳光下将500升水输送到头顶的储水箱中。本文还对该工程的安装总成本进行了分析。
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引用次数: 5
Simulation of saturation current in In1-xGaxSb based solar cell In1-xGaxSb基太阳能电池饱和电流模拟
Pub Date : 2015-09-01 DOI: 10.1109/ICGET.2015.7315122
Asif Hassan, Raktim Kumar Mondol, Imran Bin Jafar
After the golden era of silicon, nowadays compound semiconductors from III-V group is extensively studied to observe their application in electronic as well as in other field. Solar cell which is providing alternative source in our industries, houses and laboratories. Researchers are now trying to find out new features by using these inorganic materials based solar cell which can easily be paved the way of better controlling and maximizing the efficiency. In previous literature, InSb and GaSb based solar cell has already been studied. In this paper, In1-xGaxSb based solar cell is analyzed through their electronic responses. Here, we will observe the bandgap energy response for different proportion of gallium, temperature dependent energy, temperature dependent saturation current which will help in predicting a good level of solar efficiency.
经过硅的黄金时代,现在对III-V族化合物半导体进行了广泛的研究,观察其在电子和其他领域的应用。太阳能电池为我们的工业、家庭和实验室提供了替代能源。研究人员目前正试图通过使用这些无机材料来发现太阳能电池的新特性,这些新特性可以很容易地为更好地控制和最大化效率铺平道路。在以前的文献中,已经研究了基于InSb和GaSb的太阳能电池。本文对In1-xGaxSb基太阳能电池的电子响应进行了分析。在这里,我们将观察不同比例的镓,温度相关能量,温度相关饱和电流的带隙能量响应,这将有助于预测一个良好的太阳能效率水平。
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引用次数: 0
Biomass energy an alternative solution for Bangladesh 生物质能源是孟加拉国的另一种解决方案
Pub Date : 2015-09-01 DOI: 10.1109/ICGET.2015.7315107
Naznin Nuria Afrin, Shah Md Rahmot Ullah, Khandaker Anamul Hoque, Abde Mayeen Shafi
Bangladesh has been experiencing several problems over the past few decades. Adequate amount of power generation in a sustainable way is an important issue for rapidly increasing population and economic development. Renewable energy can play an effective role to meet energy demand. Since it is an agricultural country, biomass is one of the potential renewable energy sources in Bangladesh. A large amount of cattle dung, Agricultural residue, poultry dropping, water hyacinth, rice husk etc. are available in Bangladesh which is used for power generation. Already some private organizations are producing power from the biomass. Biomass gasification has yet to consolidate its position compared to other techniques for exploiting biomass energy. In this paper, gasification techniques have been reviewed. This paper also presents the scope, potential and technologies related to the use of biomass resources.
在过去的几十年里,孟加拉国经历了几个问题。在快速增长的人口和经济发展中,以可持续的方式获得足够的发电量是一个重要问题。可再生能源可以在满足能源需求方面发挥有效作用。由于孟加拉国是一个农业国家,生物质是孟加拉国潜在的可再生能源之一。孟加拉有大量的牛粪、农残、家禽粪便、水葫芦、稻壳等可用于发电。一些私人组织已经开始利用生物质发电。与其他开发生物质能的技术相比,生物质气化尚未巩固其地位。本文对气化技术进行了综述。本文还介绍了生物质资源利用的范围、潜力和相关技术。
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引用次数: 1
An efficient wind speed sensor-less MPPT controller using artificial neural network 基于人工神经网络的高效无风速传感器MPPT控制器
Pub Date : 2015-09-01 DOI: 10.1109/ICGET.2015.7315108
M. Atiqur Rahman, A. Rahim
An artificial neural network (ANN) based maximum power point tracking (MPPT) algorithm has been developed. The proposed ANN based controller has the ability to estimate wind speed by tracking the maximum power point (MPP) and the optimal rotor speed with very low error compared to the conventional MPPT methods. The algorithm is based on two series neural networks, one for wind speed estimation and the other for tracking maximum power point. The method demonstrates remarkable performance in estimating wind speed under rapidly changing wind conditions. It can also predict MPP accurately avoiding undesired oscillations around maximum power point. The algorithm does not require any mechanical sensor for wind speed measurement. Nonlinear time domain simulations have been carried out to validate the effectiveness of the proposed controllers in terms of wind speed estimation and MPPT under different operating conditions. Simulation results confirm the effectiveness of the MPPT controller in tracking the maximum power point under rapidly changing wind conditions.
提出了一种基于人工神经网络的最大功率点跟踪算法。与传统的最大功率点(MPPT)方法相比,基于人工神经网络的控制器具有通过跟踪最大功率点(MPP)和最优转子转速来估计风速的能力,且误差很小。该算法基于两个串联神经网络,一个用于风速估计,另一个用于最大功率点跟踪。在快速变化的风速条件下,该方法具有较好的风速估计性能。它还可以准确地预测MPP,避免最大功率点周围的不期望振荡。该算法不需要任何机械传感器进行风速测量。通过非线性时域仿真,验证了所提控制器在不同工况下风速估计和最大功率控制的有效性。仿真结果验证了MPPT控制器在快速变化的风力条件下跟踪最大功率点的有效性。
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引用次数: 6
Designing of a 2kW stand-alone PV system in Bangladesh using PVsyst, Homer and SolarMAT 利用PVsyst、Homer和SolarMAT在孟加拉国设计一个2kW的独立光伏系统
Pub Date : 2015-09-01 DOI: 10.1109/ICGET.2015.7315090
Md Sifat Morshed, Shoaib Mohammad Ankon, Md Tanzil Hoque Chowdhury, Md. Anik Rahman
In today's world the demand of energy is incredibly high and non- renewable resource such as ore, fossil fuel and nuclear fuel are not sufficient to meet this demand. Eventually renewable energy is a better choice. There is an increasing trend of using solar cell in the industry as well as to household appliance because solar energy is expected to play a prominent role in future smart grid as a distributed renewable source. For optimal and large scale integration of solar energy several modeling software and computer program is used. In this paper a stand-alone solar system of 2kW with battery backup, being located in Dhaka, Bangladesh is designed by using a MATLAB program named SolarMAT and two popular software PVsyst v5.06 and HOMER. Both PVsyst and HOMER are versatile and renowned software in the field of solar system design and modeling. PVsyt and HOMER have to be purchased, unlike SolarMAT, which is a free tool and it is developed in MATLAB environment which can also accurately design a solar system but not that much like the other two. To check the acceptance of these software, the final result will be compared with the practical data. Another widespread photovoltaic solar system configuration known as grid tie system can also be designed by both of these tools.
当今世界对能源的需求高得令人难以置信,而矿石、化石燃料和核燃料等不可再生资源不足以满足这一需求。最终,可再生能源是一个更好的选择。太阳能作为一种分布式可再生能源,有望在未来的智能电网中发挥重要作用,因此在工业和家用电器中使用太阳能电池的趋势越来越大。为了实现太阳能的优化和大规模集成,使用了多种建模软件和计算机程序。本文利用MATLAB程序SolarMAT和目前流行的两款软件PVsyst v5.06和HOMER,设计了位于孟加拉国达卡的2kW独立式蓄电池备用太阳能系统。PVsyst和HOMER都是太阳能系统设计和建模领域的通用和知名软件。PVsyt和HOMER必须购买,而SolarMAT是一个免费的工具,它是在MATLAB环境下开发的,它也可以精确地设计一个太阳能系统,但不像其他两个那么多。为了验证这些软件的可接受性,将最终结果与实际数据进行比较。另一种广泛的光伏太阳能系统配置称为并网系统,也可以通过这两种工具来设计。
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引用次数: 15
Design and performance analysis of a directly-coupled solar photovoltaic irrigation pump system at Gaibandha, Bangladesh 孟加拉国Gaibandha直接耦合太阳能光伏灌溉泵系统的设计与性能分析
Pub Date : 2015-09-01 DOI: 10.1109/ICGET.2015.7315116
S. M. Shamim Reza, N. Sarkar
Due to climate change and high price of fossil fuel, demand of electricity for irrigation need is increasing. Harnessing solar power to meet this increasing demand can be a good solution. In this paper, we have shown the design and performance analysis of a directly coupled solar photovoltaic (PV) motor-pump system operating at Gaibandha, Bangladesh. Three 1kW DC series motor coupled with pumps were powered by photovoltaic panels of 2kWp. The motor pumps were directly connected without any converter. All of the components of the system were available and bought from the local market. With average insolation, the system can lift 1,20,000 to 1,72,000 lit/day. We have calculated the efficiency of the motor-pumps at different time of the day. Finally, we have calculated the simple payback period of the system. We found the system to be viable technically and economically.
由于气候变化和化石燃料的高价格,灌溉所需的电力需求正在增加。利用太阳能来满足这种不断增长的需求可能是一个很好的解决方案。在本文中,我们展示了在孟加拉国Gaibandha运行的直接耦合太阳能光伏(PV)电机泵系统的设计和性能分析。3台1kW直流串联电机配水泵,由2kWp光伏板供电。电机泵直接连接,没有任何转换器。该系统的所有组件都可以从当地市场购买。以平均日照量计算,该系统每天可提升12万至1万2千亮。我们计算了一天中不同时间电动泵的效率。最后,我们计算了系统的简单投资回收期。我们发现这个系统在技术上和经济上都是可行的。
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引用次数: 7
期刊
2015 3rd International Conference on Green Energy and Technology (ICGET)
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