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Thermal Use Of Shallow Groundwater

Author: Fritz Stauffer
Publisher: CRC Press
ISBN: 1466560193
Size: 42.14 MB
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The thermal use of the shallow subsurface is increasingly being promoted and implemented as one of many promising measures for saving energy. A series of questions arises concerning the design and management of underground and groundwater heat extraction systems, such as the sharing of the thermal resource and the assessment of its long-term potential. For the proper design of thermal systems it is necessary to assess their impact on underground and groundwater temperatures. Thermal Use of Shallow Groundwater introduces the theoretical fundamentals of heat transport in groundwater systems, and discusses the essential thermal properties. It presents a complete overview of analytical and numerical subsurface heat transport modeling, providing a series of mathematical tools and simulation models based on analytical and numerical solutions of the heat transport equation. It is illustrated with case studies from Austria, Germany, and Switzerland of urban thermal energy use, and heat storage and cooling. This book gives a complete set of analytical solutions together with MATLAB® computer codes ready for immediate application or design. It offers a comprehensive overview of the state of the art of analytical and numerical subsurface heat transport modeling for students in civil or environmental engineering, engineering geology, and hydrogeology, and also serves as a reference for industry professionals.

Impacts Of Shallow Geothermal Energy On Groundwater Quality

Author: Matthijs Bonte
Publisher: IWA Publishing
ISBN: 1780406819
Size: 53.76 MB
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The use of shallow geothermal energy (SGE) systems to acclimatize buildings has increased exponentially in the Netherlands and worldwide. In certain areas, SGE systems are constructed in aquifers also used for drinking water supply raising the question of potential groundwater quality impact. Impacts of Shallow Geothermal Energy on Groundwater Quality provides a hydrochemical and geomicrobial overview of the effects of ground source heat pumps and aquifer thermal energy storage. The area is investigated with field and laboratory experiments, and reactive transport models, showing that shallow geothermal energy systems can influence groundwater quality in a number of ways. Most prominent in open ground source heating systems operating at low temperature (20°C) is the physical mixing of deep and shallow groundwater of different quality distorting the natural water quality stratification in aquifers. At a temperature of 25°C and beyond certain trace elements were observed to mobilize in laboratory experiments, and beyond 40°C redox conditions change significantly while the microbial community shift towards a thermophilic community. div Based on the results of this research, guidelines are presented for monitoring and permitting of SGE systems. The book is a useful resource for regulators of these systems, water companies and installers of the SGE systems. Author: Matthijs Bonte, Amsterdam, The Netherlands

Advances In Thermal Energy Storage Systems

Author: Luisa F. Cabeza
Publisher: Elsevier
ISBN: 1782420967
Size: 73.98 MB
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Thermal energy storage (TES) technologies store thermal energy (both heat and cold) for later use as required, rather than at the time of production. They are therefore important counterparts to various intermittent renewable energy generation methods and also provide a way of valorising waste process heat and reducing the energy demand of buildings. This book provides an authoritative overview of this key area. Part one reviews sensible heat storage technologies. Part two covers latent and thermochemical heat storage respectively. The final section addresses applications in heating and energy systems. Reviews sensible heat storage technologies, including the use of water, molten salts, concrete and boreholes Describes latent heat storage systems and thermochemical heat storage Includes information on the monitoring and control of thermal energy storage systems, and considers their applications in residential buildings, power plants and industry

Geoenergy Modeling Ii

Author: Haibing Shao
Publisher: Springer
ISBN: 3319450573
Size: 14.26 MB
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This book is dedicated to the numerical modeling of shallow geothermal systems. The utilization of shallow geothermal energy involves the integration of multiple Borehole Heat Exchangers (BHE) with Ground Source Heat Pump (GSHP) systems to provide heating and cooling. The modeling practices explained in this book can improve the efficiency of these increasingly common systems. The book begins by explaining the basic theory of heat transport processes in man-made as well as natural media. . These techniques are then applied to the simulation of borehole heat exchangers and their interaction with the surrounding soil. The numerical and analytical models are verified against analytical solutions and measured data from a Thermal Response Test, and finally, a real test site is analyzed through the model and discussed with regard to BHE and GSHP system design and optimization.

The Water Energy Food Nexus

Author: Aiko Endo
Publisher: Springer
ISBN: 981107383X
Size: 54.72 MB
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This book highlights the water-energy-food nexus as one of the most important and fundamental global environmental issues facing the world. Climate and social changes are putting increased pressure on water, energy and food resources. As water is the central aspect within this cluster, the book focuses on the inherent tradeoffs in water resources between producing/consuming energy and food. In addition, it discusses an inter- and trans-disciplinary approach to understanding the complexity of the water-energy-food nexus system, and creating policy options to reduce the tradeoffs among resources. The content integrates a variety of academic disciplines, including not only the natural sciences (e.g. hydrology, coastal oceanography, costal aquatic bioscience, fisheries, environmental earth science etc.) but also the humanities and social sciences (e.g. marine policy, environmental energy policy, resource governance, policy process theory etc.). The book can be used as a textbook for undergraduate and graduate-level sustainability science courses. Further, its practical content and trans-disciplinary approach to addressing nexus issues with stakeholders offers vital information for practitioners and administrators alike.

Global Water Dynamics

Author: Emanuel Mazor
Publisher: CRC Press
ISBN: 0824758064
Size: 23.48 MB
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All that makes this planet special is largely attributable to liquid water. Water in one form or another is found all over our planet, even encountered at depths of thousands of meters within the rocky crust. With a history of around four billion years, water has been around since the early days of Earth. Its presence in large amounts is unique to our planet, as are the outcomes and products of the water-involved geological processes. If Earth is to us a friendly home, it is thanks to all that water has created. Global Water Dynamics, written by renown geologist Emanuel Mazor is a unique book that deals with the global water systems via observations and multi-parametric physical, chemical, and isotopic measurements taken from a large number of springs and bore holes around the world. The obtained data leads to conclusions and working hypotheses that provide us with the detailed understanding of studied systems. It also allows us to see the forest beyond the trees, the global system of inter-related systems. These include recent cycling groundwater, connate water entrapped in sedimentary basins, as well as thermal and volcanic water systems, and the occurrence of petroleum deposits. The presented data and discussions lead to first principles analyses, as well as a long list of practical lessons. The content of this book addresses experts in the relevant fields, as well as university students in the earth sciences, hydrology, geology, petroleum exploration and exploitation, and environmental management and education.

Introduction To The Numerical Modeling Of Groundwater And Geothermal Systems

Author: Jochen Bundschuh
Publisher: CRC Press
ISBN: 0203848101
Size: 33.98 MB
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This book provides an introduction to the scientific fundamentals of groundwater and geothermal systems. In a simple and didactic manner the different water and energy problems existing in deformable porous rocks are explained as well as the corresponding theories and the mathematical and numerical tools that lead to modeling and solving them. This approach provides the reader with a thorough understanding of the basic physical laws of thermoporoelastic rocks, the partial differential equations representing these laws and the principal numerical methods, which allow finding approximate solutions of the corresponding mathematical models. The book also presents the form in which specific useful models can be generated and solved. The text is introductory in the sense that it explains basic themes of the systems mentioned in three areas: engineering, physics and mathematics. All the laws and equations introduced in this book are formulated carefully based on fundamental physical principles. This way, the reader will understand the key importance of mathematics applied to all the subjects. Simple models are emphasized and solved with numerous examples. For more sophisticated and advanced models the numerical techniques are described and developed carefully. This book will serve as a synoptic compendium of the fundamentals of fluid, solute and heat transport, applicable to all types of subsurface systems, ranging from shallow aquifers down to deep geothermal reservoirs. The book will prove to be a useful textbook to senior undergraduate and graduate students, postgraduates, professional geologists and geophysicists, engineers, mathematicians and others working in the vital areas of groundwater and geothermal resources.

Groundwater Flow And Quality Modelling

Author: E. Custodio
Publisher: Springer Science & Business Media
ISBN: 9789027726551
Size: 33.79 MB
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Proceedings of the NATO Advanced Research Workshop on Advances in Analytical and Numerical Groundwater Flow and Quality Modelling, Lisbon, Portugal, June 2-6, 1987

Advances In Ground Source Heat Pump Systems

Author: Simon Rees
Publisher: Woodhead Publishing
ISBN: 0081003226
Size: 34.57 MB
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Advances in Ground-Source Heat Pump Systems relates the latest information on source heat pumps (GSHPs), the types of heating and/or cooling systems that transfer heat from, or to, the ground, or, less commonly, a body of water. As one of the fastest growing renewable energy technologies, they are amongst the most energy efficient systems for space heating, cooling, and hot water production, with significant potential for a reduction in building carbon emissions. The book provides an authoritative overview of developments in closed loop GSHP systems, surface water, open loop systems, and related thermal energy storage systems, addressing the different technologies and component methods of analysis and optimization, among other subjects. Chapters on building integration and hybrid systems complete the volume. Provides the geological aspects and building integration covered together in one convenient volume Includes chapters on hybrid systems Presents carefully selected chapters that cover areas in which there is significant ongoing research Addresses geothermal heat pumps in both heating and cooling modes