Author: B. L. Cox Publisher: ISBN: Category : Geothermal engineering Languages : en Pages : 45
Book Description
Fluid and heat flow at temperatures approaching or exceeding that at the critical point (374°C for pure water, higher for saline fluids) may be encountered in deep zones of geothermal systems and above cooling intrusives. In the vicinity of the critical point the density and internal energy of fluids show very strong variations for small temperature and pressure changes. This suggests that convective heat transfer from thermal buoyancy flow would be strongly enhanced at near-critical conditions. This has been confirmed in laboratory experiments. We have developed special numerical techniques for modeling porous flow at near critical conditions, which can handle the extreme non-linearities in water properties near the critical point. Our numerical simulations show strong enhancements of convective heat transfer at near-critical conditions; however, the heat transfer rates obtained in the simulations are considerably smaller than data reported from laboratory experiments by Dunn and Hardee. We discuss possible reasons for this discrepancy and develop suggestions for additional laboratory experiments.
Author: D.A. Nield Publisher: Springer Science & Business Media ISBN: 1475721757 Category : Science Languages : en Pages : 418
Book Description
In this book we have tried to provide a user-friendly introduction to the topic of convection in porous media. We have assumed that the reader is conversant with the basic elements of fluid mechanics and heat transfer, but otherwise the book is self-contained. Only routine classical mathematics is employed. We hope that the book will be useful both as a review (for reference) and as a tutorial work (suitable as a textbook in a graduate course or seminar). This book brings into perspective the voluminous research that has been performed during the last two decades. The field has recently exploded because of worldwide concern with issues such as energy self-sufficiency and pollution of the environment. Areas of application include the insulation of buildings and equipment, energy storage and recovery, geothermal reservoirs, nuclear waste disposal, chemical reactor engineering, and the storage of heat-generating materials such as grain and coal. Geophysical applications range from the flow of groundwater around hot intrusions to the stability of snow against avalanches.
Author: Donald A. Nield Publisher: Springer Science & Business Media ISBN: 9780387984438 Category : Science Languages : en Pages : 572
Book Description
This book provides a user-friendly introduction to convection in porous media, such as fibrous insulation, geological strata, and catalytic reactors with applications in building insulation, energy storage, nuclear-waste disposal, coal and grain storage, chemical reactor engineering, groundwater flow, and convection in snow. The presentation is self-contained, requiring only routine classical mathematics and the basics of fluid mechanics and heat transfer. 264 illus.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Fluid and heat flow at temperatures approaching or exceeding that at the critical point (374oC for pure water, higher for saline fluids) may be encountered in deep zones of geothermal systems and above cooling intrusives. Laboratory experiments have demonstrated strong enhancements in heat transfer at near-critical conditions (Dunn and Hardee, 1981). We have developed special numerical techniques for modeling porous flow at near-critical conditions, which can handle the extreme non-linearities in water properties near the critical point. Our numerical experiments show strong enhancements of convective heat transfer at near-critical conditions; however, the heat transfer rates obtained in the numerical simulations are considerably smaller than those seen in the laboratory experiments by Dunn and Hardee. We discuss possible reasons for this discrepancy and develop suggestions for additional laboratory experiments.
Author: Steven E. Ingebritsen Publisher: Cambridge University Press ISBN: 1009247492 Category : Science Languages : en Pages :
Book Description
The 2006 second edition of this well received and widely adopted textbook has been extensively revised to provide a more comprehensive treatment of hydromechanics (the coupling of groundwater flow and deformation), to incorporate findings from the substantial body of research published since the first edition, and to include three new chapters on compaction and diagenesis, metamorphism, and subsea hydrogeology. The opening section develops basic theory of groundwater motion, fluid-solid mechanical interaction, solute transport, and heat transport. The second section applies flow, hydromechanics, and transport theory in a generalized geologic context, and focuses on particular geologic processes and environments. A systematic presentation of theory and application coupled with problem sets to conclude each chapter make this text ideal for use by advanced undergraduate and graduate-level hydrogeologists and geologists. It also serves as an invaluable reference for professionals in the field.
Author: Alexander Louis London Publisher: CRC Press ISBN: 9781560320128 Category : Heat exchangers Languages : en Pages : 798
Book Description
Heat exchangers are a crucial part of aerospace, marine, cryogenic and refrigeration technology. These essays cover such topics as complicated flow arrangements, complex extended surfaces, two-phase flow and irreversibility in heat exchangers, and single-phase heat transfer.
Author: B. L. Cox
Author: D.A. Nield
Author: Donald A. Nield
Author: Prashant Kumar Tewari
Author: 
Author: Steven E. Ingebritsen
Author: Alexander Louis London
Author: Hector Ludovico Echaniz
Author: 
Author: Cyrus K. Aidun