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Modelling And Simulation Of Low Temperature District Heating Systems For The Development Of An Exergy Based Assessment Method
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Book Synopsis Modelling and Simulation of Low-temperature District Heating Systems for the Development of an Exergy-based Assessment Method by : Anna Marie Dagmar Kallert
Download or read book Modelling and Simulation of Low-temperature District Heating Systems for the Development of an Exergy-based Assessment Method written by Anna Marie Dagmar Kallert and published by Fraunhofer Verlag. This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Low temperature district heating (LTDH) offers possibilities for efficient heat supply based on renewable energies. For the analysis of LTDH, the exergetic assessment is a suitable method. Hence, an exergy-based assessment method was developed in which energy as well as economic and sustainability aspects are combined. As part of a technology comparison, the method is applied to case studies to verify the applicability of the assessment approach. The approach highlights innovative supply solutions by identifying the advantages and disadvantages of different supply strategies.
Download or read book Exergy written by Ibrahim Dincer and published by Elsevier. This book was released on 2020-12-02 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exergy: Energy, Environment and Sustainable Development, Third Edition provides a systematic overview of new and developed systems, new practical examples, problems and case studies on several key topics ranging from the basics of thermodynamic concepts to advanced exergy analysis techniques in a wide range of applications. With an ancillary online package and solutions manual, this reference connects exergy with three essential areas in terms of energy, environment and sustainable development. As such, it is a thorough reference for professionals who are solving problems related to design, analysis, modeling and assessment. Connects exergy with three essential areas in terms of energy, environment and sustainable development Provides a number of illustrative examples, practical applications and case studies Written in an easy-to-follow style, starting from the basics to advanced systems
Book Synopsis Exergy Analysis of the Air Handling Unit at Variable Reference Temperature by : Vytautas Martinaitis
Download or read book Exergy Analysis of the Air Handling Unit at Variable Reference Temperature written by Vytautas Martinaitis and published by Springer Nature. This book was released on 2022-03-25 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explore how exergy analysis can be an important tool for assessing the sustainability of buildings. Building's account or around 40 percent of total energy conditions depending on local climatic conditions. Due to its nature, exergy analysis should become a valuable tool for the assessment of building sustainability, first of all considering their scope and the dependence of their energy demands on the local environmental and climatic conditions. Nonetheless, methodological bottlenecks do exist and a solution to some of them is proposed in this monograph. First and foremost, there is the still-missing thermodynamically viable method to apply the variable reference environment temperature in exergy analysis. The monograph demonstrates that a correct approach to the directions of heat exergy flows, when the reference temperature is considered variable, allows reflecting the specifics of energy transformation processes in heating, ventilation, and air conditioning systems in a thermodynamically viable way. The outcome of the case analysis, which involved coordinated application of methodologies based on the Carnot factor and coenthalpies, was exergy analysis indicators – exergy efficiency and exergy destroyed – obtained for air handling units and their components. These methods can be used for the purposes of analysing and improving building technical systems that, as a rule, operate at a variable environment temperature. Exergy analysis becomes more reliable in designing dynamic models of such systems and their exergy-based control algorithms. This would improve the possibility to deploy them in building information modelling (BIM) technologies and the application of life cycle analysis (LCA) principles in designing buildings, thus improving the quality of the decision-making process. Furthermore, this would benefit other systems where variable reference environment plays a key role. This book is relevant to academics, students and researchers in the field of thermodynamic analysis considering HVAC equipment, building energy systems, energy efficiency, sustainable development of technical systems of energy, mechanics, and construction, as well as preservation of natural resources. Planners, designers, engineers of HVAC equipment, building energy systems, and developers of appropriate simulation tools (e.g., BIM) will also find it of use.
Download or read book Thermal Systems written by Ivan CK Tam and published by MDPI. This book was released on 2021-04-07 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: We live in interesting times in which life as we know it is being threatened by manmade changes to the atmosphere in which we live. On the global scale, concern is focused on climate change due to greenhouse gas emissions, and on a national scale, atmospheric pollution produced by combustion processes is of concern. A possible approach is through the development of new ideas and innovative processes to the current practices. Among the available options, multi-generation processes such as the trigeneration cycle, battery storage system, solar power plants and heat pumps have been widely studied, as they potentially allow for greater efficiency, lower costs, and reduced emissions. On the other hand, some researchers had been working to increase the potential of energy generation process through heat recovery under the steam generator, organic Rankine cycle, and absorption chillers. In this Special Issue on "Thermal Systems” of fundamental or applied and numerical or experimental investigation, many new concepts in thermal systems and energy utilization were explored and published as original research papers in this “Special Issue”.
Book Synopsis Modelling and Analysis of a District Heating Network by : Marouf Pirouti
Download or read book Modelling and Analysis of a District Heating Network written by Marouf Pirouti and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: District heating systems have the potential to contribute to the UK renewable energy targets. However, there are a number of economic barriers which would have to be addressed in order to make district heating competitive in comparison with alternative heating technologies. The objective of this research was to model and analyse a district heating network and develop an optimisation method to calculate the minimum capital investment, heat losses and pump energy consumption. Firstly, modelling and analysis of a district heating network was conducted to obtain district heating design cases with minimum annual total energy consumption, annual total exergy consumption and annualised cost. Then through the analysis, a two-stage programming model was developed which synthesised design and optimal operation of a district heating network. The optimisation was used to minimise annual total energy consumption, annual total exergy consumption or annualised cost of the heat network by selecting suitable pump and pipe sizes, taking into account different parameters such as target pressure loss, temperature regime and operating strategy. The optimisation technique was used to investigate two different case studies, with high and low heat density. In all cases, a variable flow and variable supply temperature operating method was found to be beneficial. Design cases with minimum annual total energy consumption and annualised cost used rather small pipe diameters and large pressure drops. To achieve the minimum annual total exergy consumption a design case with larger pipe diameters and smaller pressure loss was found to be desirable. It was observed that by reducing the water temperature and increasing temperature difference between supply and return pipes, the annual total energy consumption, annual total exergy consumption and the annualised cost were reduced. It was also shown that district heating in an area with high heat density is more energy efficient and cost effective.
Book Synopsis Renewable-Energy-Driven Future by : Jingzheng Ren
Download or read book Renewable-Energy-Driven Future written by Jingzheng Ren and published by Academic Press. This book was released on 2020-09-16 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to promote the sustainable development of renewable energy and renewable-energy-driven technologies, Renewable-Energy-Driven Future: Technologies, Modelling, Applications, Sustainability and Policies provides a comprehensive view of the advanced renewable technologies and the benefits of utilizing renewable energy sources. Discussing the ways for promoting the sustainable development of renewable energy from the perspectives of technology, modelling, application, sustainability and policy, this book includes the advanced renewable-energy-driven technologies, the models for renewable energy planning and integration, the innovative applications of renewable energy sources, decision-support tools for sustainability assessment and ranking of renewable energy systems, and the regulations and policies of renewable energy. This book can benefit the researchers and experts of renewable energy by helping them to have a holistic view of renewable energy. It can also benefit the policymakers and decision-makers by helping them to make informed decisions. Presents the advanced renewable-energy-driven technologies and the innovative applications of renewable energy sources Develops the models for the efficient use of renewable energy, decision-making and the investigation of its climate and economic benefits Investigates the sustainability of renewable energy systems Features the regulations and policies of renewable energy
Download or read book Exergy written by Ibrahim Dincer and published by Newnes. This book was released on 2012-12-31 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exergy, Second Edition deals with exergy and its applications to various energy systems and applications as a potential tool for design, analysis and optimization, and its role in minimizing and/or eliminating environmental impacts and providing sustainable development. In this regard, several key topics ranging from the basics of the thermodynamic concepts to advanced exergy analysis techniques in a wide range of applications are covered as outlined in the contents. Offers comprehensive coverage of exergy and its applications, along with the most up-to-date information in the area with recent developments Connects exergy with three essential areas in terms of energy, environment and sustainable development Provides a number of illustrative examples, practical applications, and case studies Written in an easy-to-follow style, starting from the basics to advanced systems
Book Synopsis Handbook of Low Temperature District Heating by : Roberto Garay-Martinez
Download or read book Handbook of Low Temperature District Heating written by Roberto Garay-Martinez and published by Springer Nature. This book was released on 2022-10-30 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the history and evolution of district heating networks, with a focus on current and future issues of the district heating sector. Novel developments in the field of low temperature district heating are studied, limitations for safe operation and avoidance of bacteria are considered, and the associated improved performance of the system with fewer network losses is presented. This book showcases how the evolution of district heating networks is linked to the increased use of renewables and de-carbonized heat sources with specific focus to waste heat streams and solar energy systems. Considering the novelty of these technologies, technological developments and funding schemes for these investments are still immature to some extent. For that reason, a comprehensive review of the main aspects of energy planning as well as district heating economics and financing schemes for large-scale investments in renewable energy systems for district energy systems is performed. In the light of digitalization, networks are increasingly monitored, allowing for a drastic change in the approach for network operation. This book also explores the increased digitization and monitoring of networks and how this impacts network operation. This book is of interest to engineers, academics and officials interested in energy systems, presenting readers with the key concepts and tools to adapt to the evolution of district heating into an integrated, digitized and higher performing system.
Book Synopsis District Heating and Cooling Networks by : Antonio Colmenar Santos
Download or read book District Heating and Cooling Networks written by Antonio Colmenar Santos and published by MDPI. This book was released on 2020-05-12 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conventional thermal power generating plants reject a large amount of energy every year. If this rejected heat were to be used through district heating networks, given prior energy valorisation, there would be a noticeable decrease in the amount of fossil fuels imported for heating. As a consequence, benefits would be experienced in the form of an increase in energy efficiency, an improvement in energy security, and a minimisation of emitted greenhouse gases. Given that heat demand is not expected to decrease significantly in the medium term, district heating networks show the greatest potential for the development of cogeneration. Due to their cost competitiveness, flexibility in terms of the ability to use renewable energy resources (such as geothermal or solar thermal) and fossil fuels (more specifically the residual heat from combustion), and the fact that, in some cases, losses to a country/region’s energy balance can be easily integrated into district heating networks (which would not be the case in a “fully electric” future), district heating (and cooling) networks and cogeneration could become a key element for a future with greater energy security, while being more sustainable, if appropriate measures were implemented. This book therefore seeks to propose an energy strategy for a number of cities/regions/countries by proposing appropriate measures supported by detailed case studies.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1992-05 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Energy Storage by : Ibrahim Dinçer
Download or read book Thermal Energy Storage written by Ibrahim Dinçer and published by John Wiley & Sons. This book was released on 2011-06-24 with total page 585 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ability of thermal energy storage (TES) systems to facilitate energy savings, renewable energy use and reduce environmental impact has led to a recent resurgence in their interest. The second edition of this book offers up-to-date coverage of recent energy efficient and sustainable technological methods and solutions, covering analysis, design and performance improvement as well as life-cycle costing and assessment. As well as having significantly revised the book for use as a graduate text, the authors address real-life technical and operational problems, enabling the reader to gain an understanding of the fundamental principles and practical applications of thermal energy storage technology. Beginning with a general summary of thermodynamics, fluid mechanics and heat transfer, this book goes on to discuss practical applications with chapters that include TES systems, environmental impact, energy savings, energy and exergy analyses, numerical modeling and simulation, case studies and new techniques and performance assessment methods.
Download or read book Energy written by and published by . This book was released on 1981 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Building Services Engineering by : Ioan Sarbu
Download or read book Advances in Building Services Engineering written by Ioan Sarbu and published by Springer Nature. This book was released on 2021-01-04 with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive, systematic overview of original theoretical, experimental, and numerical studies in the building services engineering domain. It brings together different strands of the topic, guided by the two key features of energy savings and reduction of the pollutant emissions. Technical, economic, and energy efficiency aspects related to the design, modelling, optimisation, and operation of diverse building services systems are explored. This book includes various theoretical studies, numerical and optimisation models, experiments, and applications in this field, giving an emphasis to: indoor environment quality assurance; energy analysis, modelling, and optimisation of heating systems; improving the energy performance of refrigeration and air-conditioning systems; valorising the solar and geothermal energies; analysis of thermal energy storage technologies; hydraulic simulation and optimisation of water distribution systems; and improving the energy efficiency of water pumping. With 11 pedagogically structured chapters, containing numerous illustrations, tables, and examples, this book provides researchers, lecturers, engineers, and graduate students with a thorough guide to building service engineering.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Low-Temperature District Heating Implementation Guidebook by : Kristina Lygnerud
Download or read book Low-Temperature District Heating Implementation Guidebook written by Kristina Lygnerud and published by . This book was released on 2021-09-07 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: Low?Temperature District Heating Implementation Guidebook. This guidebook was written between 2018 and 2021 by seventeen authors within the IEA DHC/CHP TS2 annex. The input came from 250+ literature references and 165 inspiration initiatives to obtain lower temperatures in buildings and heat distribution networks. The author group wrote 40 internal documents about early implementations of low?temperature district heating. Fifteen of these early implementations are presented in this guidebook. The guidebook contains aggregated information about the main economic drivers for low?temperature district heating, how to obtain lower temperatures in heating systems inside existing and new buildings, and how to obtain lower temperatures in existing and new heat distribution networks. An applied study of a campus system in Darmstadt shows the possibility of reducing temperatures in an existing heat distribution network with rather high temperatures. The competitiveness of low?temperature district heating is explored by analysing business models and heat distribution costs. Early adopters of low?temperature district heating are presented by examples and by identified transition strategies. Five groups of network configurations with fourteen variants are presented to be used for low?temperature district heating. Finally, all 165 identified inspiration initiatives and all 137 locations mentioned are listed.
Book Synopsis Exergetic Aspects of Renewable Energy Systems by : Evanthia A. Nanaki
Download or read book Exergetic Aspects of Renewable Energy Systems written by Evanthia A. Nanaki and published by CRC Press. This book was released on 2019-07-31 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy is essential to all human activities as well as critical to social and economic development. Sustainable energy planning encompassing the concept of smart cities has a high potential to significantly contribute to climate change mitigation. For improved energy efficiency, it is essential to find low carbon solutions for the urban environment. The integration and management of energy supply with predominant exploitation of local resources is examined through the fundamental concept of exergy. This book can assist in decision making, with regard to sustainable energy design both at a national and local level.
Book Synopsis Sustainability in Energy and Buildings 2022 by : John Littlewood
Download or read book Sustainability in Energy and Buildings 2022 written by John Littlewood and published by Springer Nature. This book was released on 2023-01-06 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the proceedings of the 14th KES International Conference on Sustainability and Energy in Buildings 2021 (SEB2022) held in Split, Croatia, during September 14–16, 2022, organized by KES International. SEB22 invited contributions on a range of topics related to sustainable buildings and explored innovative themes regarding sustainable energy systems. The conference formed an exciting chance to present, interact and learn about the latest research and practical developments on the subject. The conference attracted submissions from around the world. Submissions for the full-paper track were subjected to a blind peer-reviewed process. Only the best of these were selected for presentation at the conference and publication in these proceedings. It is intended that this book provides a useful and informative snapshot of recent research developments in the important and vibrant area of sustainability in energy and buildings.
