scholarly journals Reactor Design and Thermal Performance Analysis for Solar Thermal Energy Storage Application

Energies ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 3186
Author(s):  
Yabibal Getahun Dessie ◽  
Bachirou Guene Lougou ◽  
Hong Qi ◽  
Heping Tan ◽  
Juqi Zhang ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Solar Energy ◽  
Thermal Performance ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Reactor Design ◽  
Engineering Industry ◽  
Solar Thermal Energy ◽  
The Given

Solar energy is a sustainable and low-cost renewable energy of enormous importance, especially at this time where non-renewable energy sources are unsustainable and costly. However, improving the thermal performance of a solar energy storage reactor poses some challenges. In this study, the location of fluid inlets and outlets in the given reactor design and its impact on the thermal performance were investigated. A P1 approximation radiation model coupled with shallow channel approximation of fluid flow was developed. By taking the frustum base as a reference, four fluid inlets along the edges of the frustum and two outlet locations at the base and side of the reactor were computed. Inlets located 4.81 cm from the base of the frustum and an outlet located at the side of the reactor were found to have a better thermal performance with a short conveyer energy flow system. It was also deduced that radiation applied at the edges of the frustum had better thermal performance than that applied at a quartz edge. Furthermore, increasing the laminar inflow rate from 0.36 (L/h) to 3.6 (L/h) increased the temperature distribution in the reactor. This study provides noteworthy insights of relevance to the power engineering industry and academia.

The Applications of New Energy at High Altitudes in Intelligent Greenhouses

2014 ◽  
Vol 986-987 ◽  
pp. 1291-1295
Author(s):  
Chang Wei Ji ◽  
Min Li
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Wind Energy ◽  
High Altitude ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Biomass Energy ◽  
New Energy ◽  
High Altitude Area ◽  
Physical Changes

In the high altitude, solar energy, biomass energy and wind energy are widely available and renewable energy sources. It will improve the region's living levels at high altitude and the ecological environment when developed efficiently and in low cost. Making full use of renewable natural resources is of great value and significance to sustain the development of high-altitude areas of the economy. This paper is a kind of research and study, which based on new energy and aims at making full use of solar energy, wind energy, biomass energy complementary relationship and physical changes between planting and breeding to improve the renewable energy industry, integrated, modular for the high altitude area residents gathered .

scholarly journals Machine Learning as an Efficient Diagnostic Tool for Fault Detection and Localization in Solar Photovoltaic Arrays

10.29007/34bz ◽  
2019 ◽  
Author(s):  
Masoud Alajmi ◽  
Sultan Aljahdali ◽  
Sultan Alsaheel ◽  
Mohammed Fattah ◽  
Mohammed Alshehri
Keyword(s):  
Machine Learning ◽  
Renewable Energy ◽  
Fault Detection ◽  
Solar Energy ◽  
Hot Spot ◽  
Low Cost ◽  
Short Circuit ◽  
Renewable Energy Sources ◽  
Open Circuit ◽  
Detection And Localization

Solar energy, one of many types of renewable energy, is considered to be an excellent alternative to non-renewable energy sources. Its popularity is increasing rapidly, especially because fuel energy consumes and depletes finite natural resources, polluting the environment, whereas solar energy is low- cost and clean. To produce a reliable supply of energy, however, solar energy must also be consistent. The energy we derive from a photovoltaic (PV) array is dependent on changeable factors such as sunlight, positioning of the array, covered area, and status of the solar cell. Every change adds potential for the creation of error in the array. Therefore, thorough research and a protocol for fast, efficient location and correction of all kinds of errors must be an urgent priority for researchers.For this project we used machine learning (ML) with voltage and current sensors to detect, localize and classify common faults including open circuit, short circuit, and hot-spot. Using the proposed algorithm, we have improved the accuracy of fault detection, classification and localization to 100%. Further, the proposed method can execute all three tasks (detection, classification, and localization) simultaneously.

Modeling and Control of Grid-Connected Solar-Wind Hybrid Micro-Grid System with Multiple-Input Ćuk DC-DC Converter for Household & High Power Applications

2022 ◽  
Vol 58 ◽  
pp. 191-224
Author(s):  
Peter Anuoluwapo Gbadega ◽  
Olufunke Abolaji Balogun
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Solar Energy ◽  
Renewable Energy Sources ◽  
Maximum Power ◽  
Energy Sources ◽  
Modeling And Control ◽  
Multiple Input ◽  
Micro Grid ◽  
And Control

There is a continuous global need for more energy, which must be cleaner than energy produced from the conventional generation technologies. As such, this need has necessitated the increasing penetration of distributed generation technologies and primarily on renewable energy sources. This paper presents a dynamic modeling and control strategy for a sustainable micro-grid, principally powered by multiple renewable energy sources (solar energy, wind energy and Fuel cell), micro sources (such as diesel generator, micro-gas turbine etc.) and energy storage scheme. More importantly, a current-source-interface, multiple-input dc-dc converter is utilized to coordinate the sustainable power sources to the main dc bus. Thus, for tracking maximum power available in solar energy, maximum power point tracking algorithm is applied. The proposed system is designed to meet load demand, manage power flow from various sources, inject excess power into the grid, and charge the battery from the grid as needed. More so, the proposed converter architecture has reduced number of power conversion stages with less component count, and reduced losses compared to existing grid-connected hybrid systems. This improves the efficiency and reliability of the system. The utilization of energy storage is essential owing to the intermittent nature of the renewable energy sources and the consequent peak power shift between the sources and the load. Following this further, a supervisory control system is designed to handle various changes in power supply and power demand by managing power intermittency, power peak shaving, and long-term energy storage. The entire hybrid system is described given along with comprehensive simulation results that reveal the feasibility of the whole scheme. The system model is designed and simulated in MATLAB SimPowerSystem in order to verify the effectiveness of the proposed scheme.

scholarly journals THE ANALYSIS OF THE USAGE AND PERSPECTIVES OF RENEWABLE ENERGY SOURCES IN LITHUANIA / ATSINAUJINANČIŲ ŠALTINIŲ PANAUDOJIMO IR PERSPEKTYVŲ LIETUVOJE ANALIZĖ

2011 ◽  
Vol 3 (1) ◽  
pp. 73-77
Author(s):  
Dominykas Vasarevičius
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Renewable Energy Sources ◽  
Climatic Conditions ◽  
Energy Utilization ◽  
Energy Sources ◽  
Solar Thermal Energy ◽  
Policy Model ◽  
Advantages And Disadvantages ◽  
Private Households

The paper presents the current situation with the renewable energy sources in Lithuania. An overview of legislation promoting the production and usage of renewable energy in Lithuania is presented. Renewable energy production methods suitable for Lithuanian conditions, their advantages and disadvantages are discussed. It is shown that there is no any promotion from the state for usage of solar energy in private households. The potential of solar energy usage is determined. In order to show the effectiveness of solar thermal energy utilization under similar climatic conditions presented the example of promotion policy model and its results in Poland.

scholarly journals An Economic Examination of Solar Energy with Storage based Supply Options: Solar PV-Battery and CSP with Thermal-Storage

2019 ◽  
Vol 8 (6S3) ◽  
pp. 740-748
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Energy Storage ◽  
Solar Energy ◽  
Thermal Energy ◽  
Power Supply ◽  
Solar Power ◽  
Renewable Energy Sources ◽  
Solar Pv ◽  
Levelized Cost Of Electricity

Renewable energy is being promoted amidst rising environmental concerns associated with fossil-fuel usage for power generation. The stock of such fuels is also limited and is fast depleting. Renewable energy sources such as solar photovoltaic (PV) systems present a clean alternative that has become cost-competitive with conventional thermal power generation systems. However, to counter the intermittent nature of solar power and ensure firm power supply, energy storage is essential. This paper presents a comparative analysis of power supply options based on two solar energy technologies - PV and concentrated solar power (CSP). Energy storage in the form of battery and thermal energy respectively has been included and different combinations of supply options, along with utility grid, have been analyzed in terms of the levelized cost of electricity (LCOE). The LCOE values for supplying a particular substation load in India have been compared and it was found that CSP with thermal energy storage emerged to be the economically viable option for supplying the load.

scholarly journals Carbon-based Nanofluid Applications in Solar Thermal Energy

2019 ◽  
Vol 111 ◽  
pp. 01056
Author(s):  
Nur Çobanoğlu ◽  
Ziya Haktan Karadeniz ◽  
Alpaslan Turgut
Keyword(s):  
Heat Transfer ◽  
Renewable Energy ◽  
Solar Energy ◽  
Renewable Energy Sources ◽  
Energy Systems ◽  
Solar Thermal ◽  
Heat Transfer Fluid ◽  
Energy Sources ◽  
Solar Thermal Energy ◽  
Thermal Systems

Renewable energy sources such as solar, wind and geothermal are proposed as an alternative to fossil fuels whose excessive use causes global warming. The most popular one of the renewable energy sources is considered as solar energy due to the fact that required energy is provided by the sun entire year around the world. Solar energy systems convert the solar radiation to the useful heat or electricity. In order to achieve better performance in solar thermal systems many studies have been conducted. Some of these studies suggest that heat transfer fluid could be changed with the nanofluids which can be defined as new generation heat transfer fluid. Nanofluids are suspensions of nano-sized particles such as metals, metal-oxides, and Carbon-allotropes (C), in the conventional base-fluids (water, ethylene glycol and oil). Using nanofluid enhances the efficiency and thermal performance of solar systems due to their better thermophysical and optical properties. Recently, C-based nanofluids are getting attention due to their enhanced thermal conductivity and absorptivity at even low concentrations. The results show that C-based nanofluids have a potential to use in solar energy systems: solar collectors, solar stills, photovoltaic/thermal systems.

scholarly journals STUDI PENYIMPANAN ENERGI PADA BATERAI PLTS

2018 ◽  
Vol 9 (2) ◽  
pp. 120-125
Author(s):  
Redaksi Tim Jurnal
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Solar Energy ◽  
Greenhouse Effect ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Weather Conditions ◽  
Human Needs ◽  
Late Night ◽  
The Right

The use of fossil fuels such as petroleum, coal and others as a fuel for conventional plants has an impact on the environment. Environmental impacts that occur such as environmental pollution from the greenhouse effect (greenhouse effect) that causes global warming, acid rain, the destruction of the ozone layer to the loss of tropical forests. With the condition of the need for renewable energy in the fossil energy era is running thinning at this time making the use of solar energy to meet human needs for energy to be the right choice. The use of solar energy becomes an option because of the nature of the source of solar energy that will not run out, and its easy use and application compared to other renewable energy sources. PLTS maintenance support becomes very important when PLTS has been installed. In Solar Power Generation, energy storage systems need special attention because they involve continuous energy availability especially during cloudy or late night when there is no sunlight. In this research will be discussed about the study of energy storage on PLTS battery. This characteristic is influenced by several things such as weather conditions and duration of irradiation on an area that affect the value of light intensity, voltage (V), current (I) and power that can be caused. From the research found that installed solar panels can generate power 1553,82 watts for 9 hours of solar radiation for one day.

scholarly journals Multi-Input Nonlinear Programming Based Deterministic Optimization Framework for Evaluating Microgrids with Optimal Renewable-Storage Energy Mix

2021 ◽  
Vol 13 (11) ◽  
pp. 5878
Author(s):  
Yousef Alhumaid ◽  
Khalid Khan ◽  
Fahad Alismail ◽  
Muhammad Khalid
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Nonlinear Programming ◽  
Renewable Energy Sources ◽  
Storage System ◽  
Energy Storage System ◽  
Energy Sources ◽  
Optimization Framework ◽  
Storage Technologies ◽  
The Given

Integration of renewable energy sources (RES) in a distribution network facilities the establishment of sustainable power systems. Concurrently, the incorporation of energy storage system (ESS) plays a pivotal role to maintain the economical significance as well as mitigates the technical liabilities associated with uncontrollable and fluctuating renewable output power. Nevertheless, ESS technologies require additional investments that imposes a techno-economic challenge of selection, allocation and sizing to ensure a reliable power system that is operationally optimized with reduced cost. In this paper, a deterministic cost-optimization framework is presented based on a multi-input nonlinear programming to optimally solve the sizing and allocation problem. The optimization is performed to obviate the demand-generation mismatch, that is violated with the introduction of variable renewable energy sources. The proposed optimization method is tested and validated on an IEEE 24-bus network integrated with solar and wind energy sources. The deterministic approach is solved using GAMS optimization software considering the system data of one year. Based on the optimization framework, the study also presents various different scenarios of renewable energy mix in combination with advanced ESS technologies to outline an technical as well as economical framework for ESS sizing, allocation, and selection. Based on the optimal results obtained, the optimal sizing and allocation were obtained for lead-acid, lithium-ion, nickel-cadmium and sodium-sulfur (NaS) battery energy storage system. While all these storage technologies mitigated the demand-generation mismatch with optimal size and location. However, the NaS storage technology was found to be the best among the given storage technologies for the given system minimum possible cost. Furthermore, it was observed that the cost of hybrid wind-solar mix system results in the lowest overall cost.

Sustainable Cooling with Hybrid Concentrated Photovoltaic Thermal (CPVT) System and Hydrogen Energy Storage

2018 ◽  
Vol 1 (2) ◽  
pp. 40-51 ◽  
Author(s):  
Muhammad Burhan ◽  
Muhammad Wakil Shahzad ◽  
Kim Choon Ng
Keyword(s):  
Energy Storage ◽  
Solar Energy ◽  
Optimization Algorithm ◽  
Concentration Ratio ◽  
Cooling System ◽  
Renewable Energy Sources ◽  
Hot Water ◽  
Hydrogen Energy ◽  
Adsorption Chiller ◽  
Back Plate

Standalone power systems have vital importance as energy source for remote area. On the other hand, a significant portion of such power production is used for cooling purposes. In this scenario, renewable energy sources provide sustainable solution, especially solar energy due to its global availability. Concentrated photovoltaic (CPV) system provides highest efficiency photovoltaic technology, which can operate at x1000 concentration ratio. However, such high concentration ratio requires heat dissipation from the cell area to maintain optimum temperature. This paper discusses the size optimization algorithm of sustainable cooling system using CPVT. Based upon the CPV which is operating at x1000 concentration with back plate liquid cooling, the CPVT system size is optimized to drive a hybrid mechanical vapor compression (MVC) chiller and adsorption chiller, by utilizing both electricity and heat obtained from the solar system. The electrolysis based hydrogen is used as primary energy storage system along with the hot water storage tanks. The micro genetic algorithm (micro-GA) based optimization algorithm is developed to find the optimum size of each component of CPVT-Cooling system with uninterrupted power supply and minimum cost, according to the developed operational strategy. The hybrid system is operated with solar energy system efficiency of 71%.

Modeling an Energy Storage System Based on a Hybrid Renewable Energy System in Stand-alone Applications

2017 ◽  
Vol 68 (11) ◽  
pp. 2641-2645
Author(s):  
Alexandru Ciocan ◽  
Ovidiu Mihai Balan ◽  
Mihaela Ramona Buga ◽  
Tudor Prisecaru ◽  
Mohand Tazerout
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Storage Systems ◽  
Renewable Energy Sources ◽  
Storage System ◽  
Energy Storage System ◽  
Compressed Air ◽  
Energy Sources ◽  
Energy Storage Systems ◽  
Hybrid Renewable Energy System

The current paper presents an energy storage system that stores the excessive energy, provided by a hybrid system of renewable energy sources, in the form of compressed air and thermal heat. Using energy storage systems together with renewable energy sources represents a major challenge that could ensure the transition to a viable economic future and a decarbonized economy. Thermodynamic calculations are conducted to investigate the performance of such systems by using Matlab simulation tools. The results indicate the values of primary and global efficiencies for various operating scenarios for the energy storage systems which use compressed air as medium storage, and shows that these could be very effective systems, proving the possibility to supply to the final user three types of energy: electricity, heat and cold function of his needs.

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