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Frontiers in energy 2020年第2期14卷 328-336页

作者： Y.YU Q.W.PAN L.W.WANG Institute of Refrigeration and Cryogenics Shanghai Jiao Tong UniversityShanghai 200240China

A small-scale silica gel-water adsorption system with modular adsorber,which utilizes solar energy to achieve the cogeneration of domestic air conditioning and water heating effect,is proposed and investigated in this paper.A heat recovery process between two adsorbers and a mass recovery process between two evaporators are adopted to improve the overall cooling and heating ***,the adsorption system is tested under different modes(different mass recovery,heat recovery,and cogeneration time)to determine the optimal operating ***,the cogeneration performance of domestic cooling and water heating effect is studied at different heat transfer fluid *** results show that the optimal time for cogeneration,mass recovery,and heat recovery are 600 s,40 s,and 40 s,*** the inlet temperature of hot water is around 85℃,the largest cooling power and heating power are 8.25 kW and 21.94 kW,*** the condition of cooling water temperature of 35℃,the obtained maximum COP,COP,and SCP of the system are 0.59,1.39,and 184.5 W/kg,respectively.

关键词： silica gel-water heat and mass recovery solar energy domestic cooling and heating

solar energy System with Digital Controller for Grid Connected Systems

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Journal of Electronic Science and Technology 2014年第3期12卷 277-282页

作者： Abhijit V.Padgavhankar Sharad W.Mohod Department of Electronics and Telecommunication Engineering Smt. Kashibai Navle College of Engineering Pune University of Pune Department of Electronics Engineering Prof. Ram Meghe Institute of Technology & Research Sant Gadge Baba Amravati University Badnera

--The solar photovoltaic （PV） module output voltage changes according to the variation of light intensity and temperature. This paper presents the implementation of an automatic digital controller of a DC-DC boost converter without batteries for a solar cell module by using a peripheral interface controller, which forms a closed loop, to control the ON-OFF period of the switching pulse. The output of DC-DC converter is maintained by automatically increasing or decreasing the pulse width. To produce the pulse width modulation （PWM）, the microcontroller is programmed according to the required duty cycle for the power switch. The PWM ON period is increased with the decrease in the PV voltage and vice-versa. The input voltage to the inverter is maintained constantly and is converted into an AC signal by using the metal-oxide-semiconductor field effect transistor （MOSFET） H-bridge operated in the sinusoidal pulse width modulation mode by using a PIC （peripheral interface controller） microcontroller. The generated AC signal can be connected to the AC grid or to the AC load. The simulated results by using Proteus 8 and hardware implemented results verify the effectiveness of the proposed controller.

关键词： Boost converter digital controller inverter renewable energy solar energy

solar energy Recovery and Storage System for Powering Wireless Communicating Nodes

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energy and Power Engineering 2021年第12期13卷 377-391页

作者： Salick Diagne Abdou Karim Farota Ognadon Assogba Bouya Diop Thierry Val Gaston Berger University Saint-Louis Senegal IRIT University of Toulouse 2 Toulouse France

We find nowadays in several fields of application the presence of IoT technology such as wireless sensor and actuator networks. In this technology, one of the main points of study is the management of energy consumption. In this article, we provide a solar energy harvesting and storage system for powering wireless nodes. The system we propose uses a low power solar pane a P & O control adapted to fuzzy logic for the MPPT. For energy storage, we used the supercapacitor technology. The simulation of the models shows better results than using the P & O command for an autonomous power supply of the wireless communicating nodes in the study region.

关键词： solar energy energy Recovery Supercapacitor Fuzzy Logic

solar energy Prospects in Bangladesh: Target and Current Status

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energy and Power Engineering 2021年第8期13卷 322-332页

作者： Sazzad Hossain Mohammad Maksudur Rahman Department of Physics Jahangirnagar University Savar Dhaka Bangladesh

Owing to the favorable geographical location, Bangladesh captures a good amount of solar radiation per day. The proper utilization of this solar energy may reduce the country’s energy demand to a great extent. Bangladesh government has already made a master plan to utilize the abundant solar energy in different ways with a capacity development target of 600 MW by the end of 2021. Until 2018 a total capacity of 220 MW of solar power could be achieved by installing 6.9 million solar home systems (SHSs). On the other way, rooftop solar and solar mini-grid projects facilitated the capacity of 3.07 MW and 5 MW, respectively. A capacity of 32 MW could also be touched by solar irrigation projects with more than 1300 pumps for serving country’s rural people, and solar-diesel hybrid solution program (by installing 138 small power stations) has been supporting the telecom operators. Bangladesh power development board (BPDB), and Infrastructure Development Company Limited (IDCOL) have been promoting numerous research-development solar projects to many governments and private universities to build sustainable energy equipped country.

关键词： solar energy Electricity Bangladesh Government IDCOL BPDP

Classification of Abandoned Areas for solar energy Projects Using Artificial Intelligence and Quantum Mechanics

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Journal of Geographic Information System 2021年第3期13卷 318-339页

作者： David Gabriel de Barros Franco Maria Teresinha Arns Steiner Undergraduate Program in Logistics Universidade Federal do Tocantins (UFT) Araguaína Brasil Graduate Program in Industrial Engineering and Systems Pontifícia Universidade Católica do Paraná (PUC-PR) Curitiba Brasil

The increasing demand for energy has intensified recently, requiring alternative sources to fossil fuels, which have become economically and environmentally unfeasible. On the other hand, the increasing land occupation in recent centuries is a growing problem, demanding greater efficiency, particularly in the reuse of abandoned areas, which has become an alternative. An interesting alternative would be installing energy facilities like solar, wind, biomass, and geothermal, in these areas. The objective of this paper is to develop a classification methodology, based on Artificial Intelligence (AI) and Quantum Theory (QT), to automatically carry out the classification of abandoned areas suitable for the settlement of these power plants. Artificial Neural Networks (ANNs) improved by the hybrid algorithm Quantum-behaved Particle Swarm Optimization (QPSO) together with the Levenberg-Marquardt Algorithm (LMA) were used for the classification task. In terms of Mean Squared Error (MSE), the QPSO-LMA approach achieved a decrease of 19.6% in relation to the classical LMA training with random initial weights. Moreover, the model’s accuracy showed an increase of 7.3% for the QPSO-LMA over the LMA. To validate this new approach, it was also tested on six different datasets available in the UCI Machine Learning Repository and seven classical techniques established in the literature. For the problem of installing photovoltaic plants in abandoned areas, the knowledge acquired with the solar dataset can be extrapolated to other regions.

关键词： solar energy Soil Reuse Artificial Neural Networks Quantum-Behaved Particle Swarm Optimization

Assessing Factors Influencing solar energy Adoption among Small and Medium Enterprises in Mzuzu City, Malawi

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energy and Power Engineering 2024年第7期16卷 257-284页

作者： Mkhalipie Avenea Beatrice Ke Jiang School of Business Nanjing University of Information Science and Technology Nanjing China

One of the many renewable energy sources that offer advantages is solar energy, which also lowers energy prices and promotes environmental sustainability and energy security. Despite these advantages, various barriers, such as installation costs, have prevented small and medium-sized enterprises from investigating this invention. Malawi has a significant energy shortfall such that most businesses have been hindered from their profit maximization goals. The “Photovoltaic systems” (PV) that transform sunlight into electricity are the subject of this study. This type of solar energy system is situated on the building’s roof and generally produces electricity for businesses and even homes. solar energy offers a great impact to small and medium enterprises in Mzuzu city with a cost-effective and dependable alternative to energy that has the potential to change the game. Therefore the aim of the study was to identify factors that encourage the adoption of solar energy among small medium enterprises in the city of Mzuzu city. And to identify some of barriers faced when adopting solar energy among small and medium enterprises in the city of Mzuzu. The research approach employed in the study was a survey. A survey is a type of research methodology in which primary data is gathered from a sample using a questionnaire. When information is to be gathered from a wider sample, a survey is employed. A bigger sample size was needed in this study in order to facilitate hypothesis testing. It is advised to apply a logical approach while using the survey. The survey utilized a five-point Likert scale. The study used convenience sampling to select study participants. The sample size in this study was determined using Cochran’s sample size formula. Statistical Package for Social Sciences (SPSS) and Microsoft Excel were used for statistical analysis. About 97.2% of the participants were aware of solar as a source of energy compared to 2.8 % who were unaware. The majority of participants

关键词： solar energy Small and Medium Enterprises solar energy Adoption

Methanol from CO2 and solar energy A Literature Review

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Journal of energy and Power Engineering 2012年第3期6卷 361-368页

作者： Sven Kluczka Mark Schmitz Martin Roeb Christiane VaeBen solar Institute Julieh Julich 52428 Germany German Aerospace Centre Cologne 51147 Germany

The project ＂SolMethCO2＂ deals with the options of an effective methanol synthesis from atmospheric or industrial CO2 sources by implementing solar energy. First part of the projects is a wide-range survey of the many different processes and sub-processes that may be involved in methanol production and of the possibilities how to make these processes available for solarization. The different fields of research were CO2 capturing, Hg/syngas-synthesis, biotechnological techniques for methanol synthesis, photocatalytical approaches and solar reactor.

关键词： Methanol CO2 solar energy biomass CCS photocatalysis hydrogen.

A solar energy System Design for Green Hydrogen Production in South-Western Nigeria, Lagos State, Using HOMER & ASPEN

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Open Journal of Optimization 2023年第2期12卷 72-97页

作者： Wilson Fidelis Ekpotu Joseph Taiwo Akintola Martins Chineme Obialor Philemon Chukwuebuka Udom Department of Chemical & Petroleum Engineering University of Uyo Akwa Ibom Nigeria Department of Research & Development Vitapur Nigeria Limited Lagos Nigeria Department of Chemical Engineering Federal University of Owerri Owerri Nigeria

solar system design for green hydrogen production has become the most prominent renewable energy research area, and this has also actively fueled the desire to achieve net-zero emissions. Hydrogen is a promising energy carrier because it possesses more energy capacity than fossil fuels and the abundant nature of renewable energy systems can be utilized for green hydrogen production. However, the design of an optimized electrical energy system required for hydrogen production is crucial. solar energy is indeed beneficial for green hydrogen production and this research designed, discussed, and provided high-level research on HOMER design for green hydrogen production and deployed the energy requirement with ASPEN Plus to optimize the energy system, while also incorporating fuzzy logic and PID control approaches. In addition, a promising technology with a high potential for renewable hydrogen energy is the proton exchange membrane (PEM) electrolyzer. Since its cathode (hydrogen electrode) may be operated over a wide range of pressure, a control process must be added to the system in order for it to work dynamically efficiently. This system can be characterized as an analogous circuit that consists of a resistor, capacitor, and reversible voltage. As a result, this research work also explores the Fuzzy-PID control of the PEM electrolysis system. Both the PID and Fuzzy Logic control systems were simulated using the control simulation program Matlab R2018a, which makes use of Matlab script files and the Simulink environment. Based on the circuit diagram, a transfer function that represents the mathematical model of the plant was created, and the PEM electrolysis control system is determined to be highly significant and applicable to the two control systems. The PI controller, however, has a 30.8% overshoot deficit, but when the fuzzy control system is compared to the PID controller, it is found that the fuzzy control system achieves stability more quickly, demonstrating i

关键词： Homer solar Design solar energy Renewable energy Green Hydrogen Production Fuzzy Logic HOMER

Controlled Entropy and Gauge Theory in Recycling Condensed Matter by solar energy

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Journal of Physical Science and Application 2017年第6期7卷 6-14页

作者： Nilo Sylvio Costa Serpa GA UGE-F Scientific Researches Brazil Institute of Science and Technology Universidade Paulista Brazil Faculdades ICESP Brazil

This article discusses the physical principles to be considered in a thermodynamic engineering solar system running under operational control algorithms designed to minimize entropy rates. The proposed plant is based on scientific foundations established by thermodynamics and classical field theory, and empirical disciplines that deal with properties of chemical elements and with technologies of calorific capture from remote sources. The gauge principle was applied in theoretical formalization as an essential tool in the control background of the entropy rates involved. The industrial system presented was planned to recycle condensed matter within the scope of a solid waste management policy.

关键词： Waste thermodynamics gauge principle pyrolysis solar energy cleaner production

Understanding Barriers to solar energy Use in Taiwan Using the Decision Making Trial and Evaluation Laboratory Integrated with the Technique for Order Preference by Similarity to an Ideal Solution

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Smart Grid and Renewable energy 2021年第9期12卷 137-162页

作者： Shu-Mei Lin Graduate Institute of Management of Chang Gung University Taiwan

The aim of this paper was to serve as a reference for the development of renewable energy sources of energy policy in Taiwan by investigating current barriers to solar energy use. Through a meta-analysis of relevant literature, we classified current barriers into 3 dimensions and 13 criteria. Our selected methodology was the Decision Making Trial and Evaluation Laboratory (DE- MATEL) integrated with the Technique for Order Preference by Similarity to an Ideal Solution (TOPSIS). This approach enabled us to determine the relationships among the dimensions and criteria. The results indicate the geographical and topographical factors represent the greatest barriers to solar energy development in Taiwan. Our findings serve as a valuable reference for decision-makers both in terms of policy and investment as well as offer a starting point for those working to priority barriers and choose the optimal barrier to the direction sustainable future in solar energy.

关键词： energy Renewable energy Sources energy Policy DEMATEL and TOPSIS solar energy