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Flexible dye sensitized solar cell offers an easy implemented technology for future energy supply and gives more benefits compared to the conventional silicon solar cells. The properties of flexible substrates very unique that can some advantages compared to the rigid substrate. In this review, the focused was on recent achievement on flexible dye sensitized solar cell with titanium dioxide as the...
In the present work we report on the synthesis of M/TiO2 (M=3DPt, Au) nanocomposite films processed on Si-substrate. X-Ray diffraction and Raman experiments allowed the identification of formed phases. The hydrogen production has been carried out by γ-irradiation of water in the presence of the nanocomposite films. The existence of Au- and Pt-TiO2 thin films resulted in a significant enhancement of...
LeaA-iree ferroelectric Nao.sBio.sTiOa (NBT) in both bulk and thin film forms we processed via solid state reaction and solution deposition respectively. SEM investigations showed dense samples with fine grained and smooth microstructure for thin films. A pure perovskite structure was observed by the X-ray diffraction for both specimens. The frequency dependencies of the dielectric constant and loss...
This paper presents an improved design of PV/T solar collector integrated with double pass air channel and a square stainless steel water tube. A theoretical approach and mathematical model have been suggested and developed to study the performance of the combined system. The equations governed from the steady-state one-dimensional energy balance analysis were analyzed using linear system solution...
This paper explained the theoretical framework of smart energy system worked for smart home building for producing the green energy. In this paper, we explained how we build smart home from the hybridization of solar panel and wind turbine. This project is initiate in rural area at Kampung Tanjung Resang, Mersing Malaysia. We explained the overall function and the theoretical framework of this energy...
This article aims at assessing the environmental life-cycle impacts of electricity generation in Porto Santo island. Three different existing technologies are taken into account in this assessment: a central thermal power plant, photovoltaic systems and windmills. For each technology, the life-cycle assessment methodology is applied to quantify the environmental impacts for the following categories:...
This paper addresses a net zero energy home that utilizes renewable energy resources (i.e., photovoltaic solar cells and small scale wind turbines) as well as battery energy storage systems (BESS). In the introduced system, the generated power by renewable energy resources is used to supply the energy of home, and BESS is applied for energy time-of-use arbitrage. As well, the extra amount of energy...
This paper presents a solar water heating system with novel safety and energy management functions that protect both the solar installation and users health. The planned system schedules safeguarding operations and improves the efficiency of the heat transfer mechanism. The system prevents Legionella pneumophila bacteria colonies outbreaks and promotes energy management by using an extensive set of...
Present paper deals with analytical investigation of basic parameters of a water turbine with fluctuating blades. The mathematical model relates the geometrical parameters of the blades with the power extracted from water motion and the efficiency of the turbine wheel. An example is presented about the variation of shaft torque, mean vertical velocity, mechanical power, wheel efficiency and angular...
We address the problem of generating electricity through Underwater Kite Power Systems. For this problem, we develop an optimal control problem formulation using a continuous-time model of the kite to devise the trajectories and controls for the kite that maximize the total energy produced in a given time interval. This is an highly nonlinear problem for which the optimization is challenging. We also...
This paper presents models to predict the energy produced by the wind farm. Support Vector Machine and Artificial Neural Network models were used to predict the wind energy production of a wind farm in Galicia, Spain, with 24 turbines of 9 different models. The data used, to develop the models, presents some measurement errors caused by possible malfunctioning of the sensors, maintenance and other...
The demand on distribution network reconfiguration abilities is increasing. This paper proposes a Finite State Automaton model of a distribution network that deals with topologically safe reconfiguration. Autonomous operation of distribution networks can be designed, analysed and implemented in day-to-day operation with the aid of these automata: through supervisory control. Two approaches to supervisor...
The renewable technology is very important in our day lives. The impact of renewable technology are improving lifestyle, meet the basic electricity for rural need and the impact to green environment. Currently the community in Mersing use grid power source supply by Tenaga Nasional Berhad (TNB). Abundant and consistent of wind speed in Mersing are potential enough to develop wind turbine. This will...
Industrial wastewater contains sources of nitrogen and phosphorus that tend to produce eutrophication in receiving water bodies when it has not been properly treated. Eutrophication is a type of chemical contamination of water that occurs when there is an excessive supply of nutrients to an aquatic ecosystem, It can occur naturally (red tides) but the anthropogenic emissions, as industrial and agricultural...
In this paper, an artificial neural network is proposed for estimating the electricity produced by small scale photovoltaic (PV) roof-top plants. The two main objectives of this work are: i) to determine whether the system is functioning properly and if there is a failure in the system, and ii) to estimate the magnitude of energy produced for the upcoming day by every PV system. Based on the result...
Micro-generation promises to greatly contribute to the energy balance of the energy grid; however, so far, its market penetration is going slow due to the few, or not-existing, direct economic benefits end-users would enjoy by deploying an in-house micro-generation system. In this paper, taking advantage of the potentialities of blockchain technologies, we propose a solar energy production and distribution...
New energy technologies from renewable and alternative resources represent, in the trend of technological innovation, inputs for economic and socio-cultural growth by investing especially countries with small developing economies. Many of them with different and complex morphologies territorial and socio-environmental issues, are invested by tecnoconstructive and innovative solutions for a new governance...
In Portugal, the solar energy has little use, despite the legislation for renewable energy, particularly for self-consumption. This work aims to contribute to this problem, by conducting an economic evaluation study for a non-residential facility at the Polytechnic Campus of Viseu. The results suggest the importance of the sun energy using, especially in countries with strong sunlight, such as Portugal.
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