Predicted Performance of an Integrated Solar Thermal and Photovoltaic System With Hybrid Turbine-Fuel Cell Cogeneration System With Cooling Loads

2008 ◽  
Author(s):  
Gregory J. Kowalski ◽  
Mansour Zenouzi
Keyword(s):  
Carbon Dioxide ◽  
Renewable Energy ◽  
Fuel Cell ◽  
Renewable Energy Sources ◽  
Energy Systems ◽  
Energy Utilization ◽  
Photovoltaic System ◽  
Energy Requirements ◽  
Cogeneration System ◽  
Cooling Loads

A general approach, the HLRP technique, for determining the performance of a hybrid turbine-fuel cell cogeneration system with a renewable energy sources is presented for a domestic residence for a summer day with cooling loads. The use of the ratio of the thermal load to required power parameter (HLRP), which scales the energy systems, allows the performance to be quickly determined and preliminary carbon dioxide production rates and cost effects to be estimated. The present paper includes solar energy systems, thermal and photovoltaic, as renewable energy to illustrate the development of this technique and its integration with the hybrid fuel cell cogeneration system. The analysis focused on matching the transient characteristics of the power and thermal loads with those of the renewable energy system. The results demonstrate that for a typical summer day in the location studied there are not large variations in the energy utilization factors for the four different systems investigated. Surprisingly, the photovoltaic system produces the lowest first law performance and the largest amounts of carbon dioxide. This observation points out the complexity of these systems. The explanation illustrates that saving power production while increasing the use of the most inefficient device (the furnace) decreases the system performance. The information provided by the performance graphs is used to estimate costs for each system and to easily determine which system is the most efficient for satisfying energy requirements and reducing green house gas emissions. The results provide site planners and physical plant operators with initial information that can be used to design new facilities or effectively integrate large plant expansion that include renewable energy systems in a manner that will minimize energy requirements and reduce pollution effects.

Predicted Performance of an Integrated Solar Thermal and Photovoltaic System With Hybrid Turbine-Fuel Cell Cogeneration System

2008 ◽  
Author(s):  
Gregory J. Kowalski ◽  
Mansour Zenouzi
Keyword(s):  
Carbon Dioxide ◽  
Renewable Energy ◽  
Fuel Cell ◽  
Energy Systems ◽  
Energy Utilization ◽  
Solar Thermal ◽  
System Level ◽  
Energy Requirements ◽  
Cogeneration System ◽  
And Storage

A general approach, the HLRP technique, for determining the performance of a hybrid turbine-fuel cell cogeneration system with a renewable energy sources is presented for a domestic residence. The hybrid-cogeneration system provides the electric power as well as satisfying heating loads. In this paper a system level analysis that includes practical values of heat exchangers, pumps, and storage equipment is presented. The use of the ratio of the thermal load to required power parameter (HLRP), which has been used by the authors to scale energy systems, allows the performance to be quickly determined and preliminary carbon dioxide production rates and cost effects to be estimated. The present paper includes solar energy systems as renewable energy to illustrate the development of this technique and its integration with the hybrid fuel cell cogeneration system. Practical values of solar collector efficiency and storage tank and battery storage efficiency are included. The analysis focused on matching the transient characteristics of the power and thermal loads with those of the renewable energy system. The results demonstrate that for a typical winter day in the location studied there are not large variations in the energy utilization factors for the four different systems investigated. There is a 23% reduction in the carbon dioxide produced using the solar thermal or combined system as compared to the no renewable energy or photovoltaic systems. The information provided by the performance graphs is used to estimate costs for each system and to easily determine which system is the most efficient for satisfying energy requirements and reducing green house gas emissions. The results provide site planners and physical plant operators with initial information that can be used to design new facilities or effectively integrate large plant expansion that include renewable energy systems in a manner that will minimize energy requirements and reduce pollution effects.

Renewable Energy and Hybrid Turbine-Fuel Cell Cogeneration System’s Predicted Performance

2007 ◽  
Author(s):  
Gregory J. Kowalski ◽  
Mansour Zenouzi
Keyword(s):  
Carbon Dioxide ◽  
Renewable Energy ◽  
Fuel Cell ◽  
Energy Systems ◽  
Solar Thermal ◽  
Energy Requirements ◽  
Thermal System ◽  
Cogeneration System ◽  
Solar Thermal System ◽  
And Storage

A normalized, general approach for determining the combined performance of a hybrid turbine-fuel cell cogeneration system with a renewable energy source, such as a solar thermal system is presented. The hybrid-cogeneration system provides required electric power as well as satisfying simultaneous heating loads. In this paper a system level analysis that includes practical values of heat exchangers, pumps, and storage equipment is presented. The use of the ratio of the thermal load to required power parameter (HLRP), which has been previously used by the authors to scale energy systems, allows the performance to be quickly determined and preliminary carbon dioxide production rates and cost effects to be estimated. The present paper will focus on a solar thermal system as renewable energy to illustrate the development of this technique and its integration with the hybrid fuel cell cogeneration system. Practical values of solar collector efficiency and storage tank efficiency are included. The analysis will focus on matching the transient characteristics of the power and thermal loads with those of the renewable energy system. Performance measures used to evaluate the investigated designs include the energy utilization factor and the carbon dioxide produced per unit power output. The information provided by the performance graphs can be used to estimate costs for each system and to easily determine which system is the most efficient for satisfying energy requirements and reducing green house gas emissions. The results provide site planners and physical plant operators with initial information that can be used to design new facilities or effectively integrate large plant expansion that include renewable energy systems in a manner that will minimize energy requirements and reduce pollution effects.

Solar energy utilization in overall energy budget of the Johann Gregor Mendel Antarctic station during austral summer season

2015 ◽  
Vol 5 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Petr Wolf
Keyword(s):  
Renewable Energy ◽  
Nuclear Power ◽  
Renewable Energy Sources ◽  
Austral Summer ◽  
Energy Utilization ◽  
Photovoltaic System ◽  
Energy Sources ◽  
Research Activities ◽  
Gregor Mendel ◽  
Johann Gregor Mendel

It is well known that the utilization of renewable energy sources is inevitable for a sustainable future. Besides the fact that other energy sources such as coal, gas or nuclear power have limited reserves the proper use of increasingly higher shares of renewable energy sources may lower negative impacts of traditional energy sources on the ecosystems. This is especially important in naturally protected areas located in remote Earth locations. Such areas are still almost untouched by mankind, e.g. Antarctica. The research activities in the area of renewable energy sources have increased rapidly within the last few decades. It is of a global interest to carry out the research in an ecologically sensitive way, i.e. balance the outputs and the effects of infrastructure on environment. In this paper, a project of installation of a photovoltaic system on the Czech Antarctic Station (Johann Gregor Mendel) on the James Ross Island is described and the first experience from the system run is reported. The contribution of this system to the overall energy production on this station shortly after commissioning of the system is presented as well. In discussion, a possible future development of the system is suggested.

scholarly journals Efficient Topology for DC-DC Boost Converter Based on Charge Pump Capacitor for Renewable Energy System

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Muhammad Zeeshan Malik ◽  
Vineet Tirth ◽  
Amjad Ali ◽  
Ajmal Farooq ◽  
Ali Algahtani ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Rural Areas ◽  
Renewable Energy Sources ◽  
Charge Pump ◽  
Energy Systems ◽  
Energy System ◽  
Boost Converter ◽  
Photovoltaic System ◽  
Experimental Result ◽  
Renewable Energy Systems

In an attempt to meet the global demand, renewable energy systems (RES) have gained an interest in it due to the availability of the resources, especially solar photovoltaic system that has been an importance since many years because of per watt cost reduction, improvement in efficiency, and abundant availability. Photovoltaic system in remote and rural areas is very useful where a grid supply is unavailable. In this scenario, power electronic converters are an integral part of the renewable energy systems particularly for electronic devices which are operated from renewable energy sources and energy storage system (fuel cell and batteries). In this article, a new topology of charge pump capacitor (CPC) which is based on high voltage gain technique DC-DC boost converter (DCBC) with dynamic modeling is proposed. To testify the efficacy of the introduced topology, a prototype has been developed in a laboratory, where input was given 10VDC and 80VDC output voltage achieved at the load side. Furthermore, the experimental result shows that the voltage stress of MOSFET switches is very less in comparison with the conventional boost converter with the same parameters as the proposed converter.

Multi-input DC-AC Inverter for Hybrid Renewable Energy Power System

2016 ◽  
Vol 6 (1) ◽  
pp. 40
Author(s):  
Mohd Azman Rosli ◽  
Nor Zaihar Yahaya ◽  
Zuhairi Baharudin
Keyword(s):  
Renewable Energy ◽  
Fuel Cell ◽  
Power System ◽  
Wind Turbine ◽  
Renewable Energy Sources ◽  
Energy Utilization ◽  
Power Characteristics ◽  
Circuit Simulator ◽  
Photovoltaic Array ◽  
New Energy

The objective of this paper is to design a multi-input dc-ac inverter integrated photovoltaic array, wind turbine and fuel cell in order to simplify the hybrid power system and reduce the cost.  The output power characteristics of the photovoltaic array, wind turbine and fuel cell are introduced. The operational principle and technical details of the proposed multi-input dc-ac inverter is then explained. The proposed inverter consists of a three input flyback dc-dc converter and a single phase full bridge dc-ac inverter. The control strategy for the proposed inverter to distribute the power reasonably to the sources and it achieved a priority of the new energy utilization is discussed. This multi-input dc-ac inverter is capable of being operated in five conditions and power delivered to the ac load can be either individually or simultaneously. First to third condition occurs when the power delivered from either renewable energy sources individually, fourth condition happens when power is demanded from two sources simultaneously, and finally when power are available from three sources simultaneously. The proposed inverter has been simulated by employing NI Multisim 12.0 circuit simulator.

scholarly journals Multi-input DC-AC Inverter for Hybrid Renewable Energy Power System

2016 ◽  
Vol 6 (1) ◽  
pp. 40
Author(s):  
Mohd Azman Rosli ◽  
Nor Zaihar Yahaya ◽  
Zuhairi Baharudin
Keyword(s):  
Renewable Energy ◽  
Fuel Cell ◽  
Power System ◽  
Wind Turbine ◽  
Renewable Energy Sources ◽  
Energy Utilization ◽  
Power Characteristics ◽  
Circuit Simulator ◽  
Photovoltaic Array ◽  
New Energy

The objective of this paper is to design a multi-input dc-ac inverter integrated photovoltaic array, wind turbine and fuel cell in order to simplify the hybrid power system and reduce the cost.  The output power characteristics of the photovoltaic array, wind turbine and fuel cell are introduced. The operational principle and technical details of the proposed multi-input dc-ac inverter is then explained. The proposed inverter consists of a three input flyback dc-dc converter and a single phase full bridge dc-ac inverter. The control strategy for the proposed inverter to distribute the power reasonably to the sources and it achieved a priority of the new energy utilization is discussed. This multi-input dc-ac inverter is capable of being operated in five conditions and power delivered to the ac load can be either individually or simultaneously. First to third condition occurs when the power delivered from either renewable energy sources individually, fourth condition happens when power is demanded from two sources simultaneously, and finally when power are available from three sources simultaneously. The proposed inverter has been simulated by employing NI Multisim 12.0 circuit simulator.

scholarly journals Agricultural Residue Management for Sustainable Power Generation: The Poland Case Study

2021 ◽  
Vol 11 (13) ◽  
pp. 5907
Author(s):  
Valerii Havrysh ◽  
Antonina Kalinichenko ◽  
Anna Brzozowska ◽  
Jan Stebila
Keyword(s):  
Power Generation ◽  
Spatial Distribution ◽  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Agricultural Waste ◽  
Energy Utilization ◽  
Evaluation Methodology ◽  
Energy Sources ◽  
Energy Potential ◽  
Agricultural Residue

The European Union has set targets for renewable energy utilization. Poland is a member of the EU, and its authorities support an increase in renewable energy use. The background of this study is based on the role of renewable energy sources in improving energy security and mitigation of climate change. Agricultural waste is of a significant role in bioenergy. However, there is a lack of integrated methodology for the measurement of its potential. The possibility of developing an integrated evaluation methodology for renewable energy potential and its spatial distribution was assumed as the hypothesis. The novelty of this study is the integration of two renewable energy sources: crop residues and animal husbandry waste (for biogas). To determine agricultural waste energy potential, we took into account straw requirements for stock-raising and soil conservation. The total energy potential of agricultural waste was estimated at 279.94 PJ. It can cover up to 15% of national power generation. The spatial distribution of the agricultural residue energy potential was examined. This information can be used to predict appropriate locations for biomass-based power generation facilities. The potential reduction in carbon dioxide emissions ranges from 25.7 to 33.5 Mt per year.

Frequency and inertia response effects, capabilities, and possibilities in renewable energy sources

2021 ◽  
Vol 14 ◽  
Author(s):  
Jishu Mary Gomez ◽  
Prabhakar Karthikeyan Shanmugam
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Frequency Control ◽  
Renewable Energy Sources ◽  
Energy Systems ◽  
Load Shedding ◽  
System Stability ◽  
Frequency Regulation ◽  
Control Schemes ◽  
Inertia Response

Background & Objectives: The global power system is in a state of continuous evolution, incorporating more and more renewable energy systems. The converter-based systems are void of inherent inertia control behavior and are unable to curb minor frequency deviations. The traditional power system, on the other hand, is made up majorly of synchronous generators that have their inertia and governor response for frequency control. For improved inertial and primary frequency response, the existing frequency control methods need to be modified and an additional power reserve is to be maintained mandatorily for this purpose. Energy self-sufficient renewable distributed generator systems can be made possible through optimum active power control techniques. Also, when major global blackouts were analyzed for causes, solutions, and precautions, load shedding techniques were found to be a useful tool to prevent frequency collapse due to power imbalances. The pre-existing load shedding techniques were designed for traditional power systems and were tuned to eliminate low inertia generators as the first step to system stability restoration. To incorporate emerging energy possibilities, the changes in the mixed power system must be addressed and new frequency control capabilities of these systems must be researched. Discussion: In this paper, the power reserve control schemes that enable frequency regulation in the widely incorporated solar photovoltaic and wind turbine generating systems are discussed. Techniques for Under Frequency Load Shedding (UFLS) that can be effectively implemented in renewable energy enabled micro-grid environment for frequency regulation are also briefly discussed. The paper intends to study frequency control schemes and technologies that promote the development of self- sustaining micro-grids. Conclusion: The area of renewable energy research is fast emerging with immense scope for future developments. The comprehensive literature study confirms the possibilities of frequency and inertia response enhancement through optimum energy conservation and control of distributed energy systems.

scholarly journals Optimisation of Energy Accumulation for Renewable Energy Sources

2021 ◽  
Vol 19 ◽  
pp. 205-210
Author(s):  
Milan Belik ◽  
Keyword(s):  
Renewable Energy ◽  
Model Building ◽  
Residential Buildings ◽  
Renewable Energy Sources ◽  
Photovoltaic System ◽  
Energy Sources ◽  
Pv System ◽  
Energy Accumulation ◽  
Wind Power Station ◽  
Future Production

This project focuses on optimisation of energy accumulation for various types of distributed renewable energy sources. The main goal is to prepare charging – discharging strategy depending on actual power consumption and prediction of consumption and production of utilised renewable energy sources for future period. The simulation is based on real long term data measured on photovoltaic system, wind power station and meteo station between 2004 – 2021. The data from meteo station serve as the input for the simulation and prediction of the future production while the data from PV system and wind turbine are used either as actual production or as a verification of the predicted values. Various parameters are used for trimming of the optimisation process. Influence of the charging strategy, discharging strategy, values and shape of the demand from the grid and prices is described on typical examples of the simulations. The main goal is to prepare and verify the system in real conditions with real load chart and real consumption defined by the model building with integrated renewable energy sources. The system can be later used in general installations on commercial or residential buildings.

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