Profiting from Low-grade Heat


Book Description

This book discusses the transition from exploitation of our use of natural resources, in particular energy sources, towards more careful use and conservation.




Power Recovery from Low Grade Heat by Means of Screw Expanders


Book Description

Current concerns with climate change have resulted in greatly increased interest in power recovery from low grade heat sources. This includes both hot fluid streams which can be expanded directly to produce mechanical power and those which act as a source of heat to closed cycle power generation systems. Power recovery from low grate heat by means of screw expanders with a generalised overview of how best to recover power from such sources, based on thermodynamic considerations, which differs to the approach used in classical thermodynamics textbooks and which includes an introductory description of the types of working fluid that are used in systems used to recover power from such sources and the criteria that must be taken into account in their selection. This is followed by a description of the mathematical modelling of twin screw machine geometry. The modelling of the thermodynamics and fluid flow through such machines is then given, together with how this is used to predict their performance. Finally a detailed description is given of systems currently used or projected both for direct expansion of the source fluid and by recovery of heat from it, which includes those which are particularly suited to the use of screw expanders in place of turbines. A novel generalised approach to the thermodynamics of power recovery from low grade heat systems Gives criteria for working fluid selection Provides details of, and how to model, screw expander geometry Details how to estimate screw expander performance Surveys types of system used for power recovery from low grade heat and where this can be improved by the use of screw expanders.




Low Grade Heat Driven Multi-Effect Distillation and Desalination


Book Description

Low Grade Heat Driven Multi-effect Distillation and Desalination describes the development of advanced multi-effect evaporation technologies that are driven by low grade sensible heat, including process waste heat in refineries, heat rejection from diesel generators or microturbines, and solar and geothermal energy. The technologies discussed can be applied to desalination in remote areas, purifying produced water in oil-and-gas industries, and to re-concentrate process liquor in refineries. This book is ideal for researchers, engineering scientists, graduate students, and industrial practitioners working in the desalination, petrochemical, and mineral refining sectors, helping them further understand the technologies and opportunities that relate to their respective industries. For researchers and graduate students, the core enabling ideas in the book will provide insights and open up new horizons in thermal engineering. Focuses on advanced, yet practical, distillation technologies using low-grade sensible heat Explains the new design paradigm that must accompany the development of technologies Contains key experimental data that serves to prove the core concepts that underpin the new technologies Covers extensive thermo-economic analyses of the technologies, the price point for adoption, capital cost comparison with existing technologies, operating costs, and net present values




Salinity Gradient Heat Engines


Book Description

Salinity Gradient Heat Engines classifies all the existing SGHEs and presents an in-depth analysis of their fundamentals, applications and perspectives. The main SGHEs analyzed in this publication are Osmotic, the Reverse Electrodialysis, and the Accumulator Mixing Heat Engines. The production and regeneration unit of both cycles are described and analyzed alongside the related economic and environmental aspects. This approach provides the reader with very thorough knowledge on how these technologies can be developed and implemented as a low-impact power generation technique, wherever low-temperature waste-heat is available. This book will also be a very beneficial resource for academic researchers and graduate students across various disciplines, including energy engineering, chemical engineering, chemistry, physics, electrical and mechanical engineering. Focuses on advanced, yet practical, recovery of waste heat via salinity gradient heat engines Outlines the existing salinity gradient heat engines and discusses fundamentals, potential and perspectives of each of them Includes economics and environmental aspects Provides an innovative reference for all industrial sectors involving processes where low-temperature waste-heat is available.




Profit Maximization Techniques for Operating Chemical Plants


Book Description

A systematic approach to profit optimization utilizing strategic solutions and methodologies for the chemical process industry In the ongoing battle to reduce the cost of production and increase profit margin within the chemical process industry, leaders are searching for new ways to deploy profit optimization strategies. Profit Maximization Techniques For Operating Chemical Plants defines strategic planning and implementation techniques for managers, senior executives, and technical service consultants to help increase profit margins. The book provides in-depth insight and practical tools to help readers find new and unique opportunities to implement profit optimization strategies. From identifying where the large profit improvement projects are to increasing plant capacity and pushing plant operations towards multiple constraints while maintaining continuous improvements—there is a plethora of information to help keep plant operations on budget. The book also includes information on: ● Take away methods and techniques for identifying and exploiting potential areas to improve profit within the plant ● Focus on latest Artificial Intelligence based modeling, knowledge discovery and optimization strategies to maximize profit in running plant. ● Describes procedure to develop advance process monitoring and fault diagnosis in running plant ● Thoughts on engineering design , best practices and monitoring to sustain profit improvements ● Step-by-step guides to identifying, building, and deploying improvement applications For leaders and technologists in the industry who want to maximize profit margins, this text provides basic concepts, guidelines, and step-by-step guides specifically for the chemical plant sector.




Waste to Profit


Book Description

Waste to Profit: Environmental Concerns and Sustainable Development gives information about selecting the most suitable technology for waste treatment and energy recovery under different conditions. It contains techno-economic analysis, life cycle assessment, optimization of tools and technologies, including overview of various technologies involved in the treatment of wastes and factors influencing the involved processes. Finally, it explores the environmental, socioeconomic, and sustainability impact of different waste-to-energy systems. Features: Reviews energy sources and technologies from waste, their environmental interactions, and the relevant global energy policies Provides overview of waste-to-energy technologies for a sustainable future Explores physicochemical properties involved in the pertinent process and technologies Gives a multidisciplinary view about energy conversion and management, planning, controlling, and monitoring processes Discusses information in transferring the technologies' industrial level and global level to meet the requirements of different countries This book is aimed at researchers and graduate students in environmental engineering, energy engineering, waste management, waste to energy, and bioenergy.




The Environmental Management of Low-Grade Fuels


Book Description

The negative environmental impacts of energy use, particularly soil and water pollution, continue to present serious policy dilemmas. The release of emissions and effluents and the build-up of solid waste throughout the fuel cycle have disruptive effects on natural habitats and human health. Further, fuel combustion can result in the emission of carbon dioxide, ozone, methane and nitrogen dioxide the 'greenhouse gases' which have been linked to climate change. The safe and sustainable use of energy has become an important issue in the wider environmental debate. In this report, researchers from the Stockholm Environment Institute explore the issues raised by the use of low-grade fuels such as peat, wood, biomass, lignite, oil shale and municipal and industrial wastes. The present strategies and policy options for all stages of the process, from mining and transport to processing and combustion. With those who would like to learn more about these fuels in mind, the material is presented clearly, and discussions of environmental protection measures are given in table form throughout the ease of reference. A directory of environmental guidelines, regulations and standards is given in an appendix. While a high calorific value fuels remain the most significant source of energy in many countries, economic and other constraints on the use of these fuels may result in more nations turning to low-grade sources of energy to operate their industrial or transportation sectors. The greater potential for environmental degradation that accompanies the use of low-grade fuels means that it is crucial that environmentally sound methods for their management, such as those presented here, be more widely available. The Environmental Management of Low-Grade Fuels will be valuable for industry specialists, policy makers, students and all who are concerned with the life cycle of these materials. Mary MacDonald is an affiliated scientist, and Michael Chadwick is a former director, at the Stockholm Environment Institute. Garegin Aslanian is a senior associate with the Institute for High Temperature Research in Moscow. Originally published in 1996




Light Metals 2011


Book Description

The Light Metals symposia are a key part of the TMS Annual Meeting & Exhibition, presenting the most recent developments, discoveries, and practices in primary aluminum science and technology. Publishing the proceedings from these important symposia, the Light Metals volume has become the definitive reference in the field of aluminum production and related light metal technologies. Light Metals 2011 offers a mix of the latest scientific research findings and applied technology, covering alumina and bauxite, aluminum reduction technology, aluminum rolling, cast shop for aluminum production, electrode technology, and furnace efficiency.




Advanced Applications of Supercritical Fluids in Energy Systems


Book Description

Supercritical fluids have been utilized for numerous scientific advancements and industrial innovations. As the concern for environmental sustainability grows, these fluids have been increasingly used for energy efficiency purposes. Advanced Applications of Supercritical Fluids in Energy Systems is a pivotal reference source for the latest academic material on the integration of supercritical fluids into contemporary energy-related applications. Highlighting innovative discussions on topics such as renewable energy, fluid dynamics, and heat and mass transfer, this book is ideally designed for researchers, academics, professionals, graduate students, and practitioners interested in the latest trends in energy conversion.




Process Engineering


Book Description