Heat transfer analysis of porous media receiver with different transport and thermophysical models using mixture as feeding gas
TL;DR: In this article, a local thermal non-equilibrium model is adopted to solve the steady state heat and mass transfer problems of porous media solar receiver, where the fluid entrance surface is subjected to concentrated solar radiation, and CH4/H2O mixture is adopted as feeding gas.
About: This article is published in Energy Conversion and Management.The article was published on 2014-07-01. It has received 96 citations till now. The article focuses on the topics: Heat transfer & Porous medium.
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TL;DR: In this article, the theoretical framework of CSP technology with parabolic trough collector (PTC) system is discussed and a detailed derivation process of the maximum theoretical concentration ratio of the PTC was initially given to present the capability of application.
Abstract: Advanced solar energy utilization technology requires high-grade energy to achieve the most efficient application with compact size and least capital investment recovery period Concentrated solar power (CSP) technology has the capability to meet thermal energy and electrical demands Benefits of using CSP technology with parabolic trough collector (PTC) system include promising cost-effective investment, mature technology, and ease of combining with fossil fuels or other renewable energy sources This review first covered the theoretical framework of CSP technology with PTC system Next, the detailed derivation process of the maximum theoretical concentration ratio of the PTC was initially given Multiple types of heat transfer fluids in tube receivers were reviewed to present the capability of application Moreover, recent developments on heat transfer enhancement methods for CSP technology with PTC system were highlighted As the rupture of glass covers was frequently observed during application, methods of thermal deformation restrain for tube receivers were reviewed as well Commercial CSP plants worldwide with PTC system were presented, including those that are in operation, under construction, and announced Finally, possible further developments of CSP plants with PTC system were outlined Besides, suggestions for future research and application guidance were also illustrated
383 citations
TL;DR: In this paper, a tube receiver with pin fin arrays inserting was introduced as the absorber tube of a parabolic trough receiver to increase the overall heat transfer performance of the tube receiver.
168 citations
TL;DR: A systematic comparison of different S-CO2 Brayton cycle layouts based on multi-objective optimizations suggests that the inter-cooling cycle layout and the partial-cooled cycle layout can generally yield the most excellent performances, and followed by the recompression cycle layouts and the pre-compression cycle layout, while the simple recuperation cycle layout has the worst performances.
132 citations
TL;DR: In this article, the effects of a glass cover (GC) on heat flux distribution are analyzed by Monte Carlo Ray Tracing (MCRT) method, which can reduce the thermal stress of tube receiver.
103 citations
Cites background from "Heat transfer analysis of porous me..."
...As known, solar energy is an intermittent energy source [4,5]....
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TL;DR: Spectral beam splitting (SBS) hybrid PV/T system was a promising path for utilizing the full spectrum solar energy to cogenerate electricity and high grade heat, with high conversion efficiency as discussed by the authors.
Abstract: Spectral beam splitting (SBS) hybrid PV/T system was a promising path for utilizing the full spectrum solar energy to cogenerate electricity and high-grade heat, with high conversion efficiency To settle the balance between photoelectric and photothermal conversion performance for full spectrum solar energy utilization, the sunlight based on wavelength matching was divided into two or more parts at band-gap wavelength by a spectral beam splitter: sunlight with wavelength at and close to the band-gap of PV cell was directed to generate electricity, while the sunlight with rest wavelength was used for thermal output SBS hybrid PV/T system can not only increase the overall efficiency, but can also decouple the photoelectric and photothermal conversion process in separated operation temperatures The current state-of the-art review on the advancements of SBS hybrid PV/T system performed with the aid of nanofluids, nano-film and semitransparent PV cells was presented in this work, with emphasis on the latest developments during the last decade Mechanisms of different SBS techniques, progress in system, thermodynamic and cost analyses of nanofluids, nano-film and semitransparent PV cell based SBS hybrid PV/T system were discussed in detail to give a comprehensive understanding of the nature of the full spectrum solar energy utilization and the factors impacting on the system efficiency Though the cost increase can be offset by extra energy efficiency gain, the wavelength matching, optical losses and stability of SBS hybrid PV/T system needs to be solved for future industrial application
98 citations
References
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Book•
01 Jan 1977
TL;DR: In this article, the authors estimate physical properties of pure components and Mixtures and show that the properties of these components and mixtures are similar to those of ideal gases and liquids.
Abstract: Chapter 1: The Estimation of Physical Properties. Chapter 2: Pure Component Constants. Chapter 3: Thermodynamic Properties of Ideal Gases. Chapter 4: Pressure-Volume-Temperature Relationships of Pure Gases and Liquids. Chapter 5: Pressure-Volume-Temperature Relationships of Mixtures. Chapter 6: Thermodynamic Properties of Pure Components and Mixtures. Chapter 7: Vapor Pressures and Enthalpies of Vaporization of Pure Fluids. Chapter 8: Fluid Phase Equilibria in Multicomponent Systems. Chapter 9: Viscosity. Chapter 10: Thermal Conductivity. Chapter 11: Diffusion Coefficients. Chapter 12: Surface Tension.
14,380 citations
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01 Jan 1993
TL;DR: In this article, the Monte Carlo method for thermal radiation was used to estimate the radiative properties of one-dimensional Gray Media, and the method of Spherical Harmonics (PN-Approximation) was used for the same purpose.
Abstract: 1. Fundamentals of Thermal Radiation 2. Radiative Property Predictions from Electromagnetic Wave Theory 3. Radiative Properties of Real Surfaces 4. View Factors 5. Radiative Exchange Between Gray, Diffuse Surfaces 6. Radiative Exchange Between Partially-Specular Gray Surfaces 7. Radiative Exchange Between Nonideal Surfaces 8. Surface Radiative Exchange in the Presence of Conduction and Convection 9. The Equation of Radiative Transfer in Participating Media 10. Radiative Properties of Molecular Gases 11. Radiative Properties of Particulate Media 12. Radiative Properties of Semitransparent Media 13. Exact Solutions for One-Dimensional Gray Media 14. Approximate Solution Methods for One-Dimensional Media 15. The Method of Spherical Harmonics (PN-Approximation) 16. The Method of Discrete Ordinates (SN-Approximation) 17. The Zonal Method 18. The Treatment of Collimated Irradiation 19. The Treatment of Nongray Extinction Coefficients 20. The Monte Carlo Method for Thermal Radiation 21. Radiation Combined with Conduction and Convection 22. Inverse Radiative Heat Transfer A. Constants and Conversion Factors B. Tables for Radiative Properties of Opaque Surfaces C. Blackbody Emissive Power Table D. View Factor Catalogue E. Exponential Integral Functions F. Computer Codes Author Index Subject Index
4,907 citations
23 Jun 2015
TL;DR: Theoretical analysis of transport in Porous Media: Multiscale Modeling of Porous Medium Systems as discussed by the authors is a multiscale approach for modelling Porous medium systems.
Abstract: General Characteristics and Modeling of Porous Media Multiscale Modeling of Porous Medium Systems Amanda L. Dye, James E. McClure, William G. Gray, and Cass T. Miller Advanced Theories of Two-Phase Flow in Porous Media S. Majid Hassanizadeh Characterization of Fractures and Fracture Network of Porous Media Muhammad Sahimi Thin Porous Media Marc Prat and Tristan Agaesse Magnetically Stabilized and Fluidized Beds in Science and Technology: A Review Teresa Castelo-Grande, Paulo A. Augusto, Angel M. Estevez, Domingos Barbosa, Jesus Ma. Rodriguez, Audelino Alvaro, and Carmen Torrente Lift Generation in Highly Compressible Porous Media: From Red Cells to Skiing to Soft Lubrication Qianhong Wu Transport in Porous Media Theoretical Analysis of Transport in Porous Media: Multiequation and Hybrid Models for a Generic Transport Problem with Nonlinear Source Terms Yohan Davit and Michel Quintard Porous Media Theory for Membrane Transport Phenomena A. Nakayama, Y. Sano, T. Nishimura, and K. Nagase Effective Transport Properties of Porous Media by Modeling Moran Wang Effective Transport through Porous Media under Nonequilibrium Relaxation Conditions Faruk Civan Modeling Approach for Gradient-Based Motion of Microorganisms in Porous Media and Applications in Biosystems Zineddine Alloui and Tri Nguyen-Quang Turbulence in Porous Media Feedback Control for Promoting or Suppressing the Transition to Weak Turbulence in Porous Media Convection Peter Vadasz Advances in Modeling Turbulence Phenomena in Heterogeneous Media: Reactive Systems Marcelo J.S. de Lemos Heat Transfer of Nanofluids in Porous Media Effects of Nanofluids on Convection in Porous Media A. Nield and A.V. Kuznetsov Analyzing Nanofluids Suspension Using the Porous Media Interface Heat Transfer Model Peter Vadasz Thermal Transport in Porous Media Thermal Transport in Highly Porous Cellular Materials Raymond Viskanta Convection of a Bingham Fluid in a Porous Medium Andrew S. Rees High-Heat-Flux Distributed Capillary Artery Evaporators Gisuk Hwang, Chanwoo Park, and Massoud Kaviany Impinging Jets in Porous Media Bernardo Buonomo, Oronzio Manca, and Sergio Nardini Thermohydromechanical Behavior of Poroelastic Media A. Patrick S. Selvadurai Thermogravitational Diffusion in a Porous Medium Saturated by a Binary Fluid Abdelkader Mojtabi, Marie Catherine Charrier-Mojtabi, Bilal El Hajjar, and Yazdan Pedram Razi Geological Applications in Porous Media Digital Petrophysics: Imaging, Modeling, and Experimental Challenges Related to Porous Media in Oil Fields Peter Tilke Modeling of Subsurface CO2 Migration at Geological Carbon Sequestration Sites in Deep Saline Aquifers Sumit Mukhopadhyay Groundwater Flows and Velocity Measurements Shigeo Kimura Geostatistical Simulation and Reconstruction of Porous Media Pejman Tahmasebi and Muhammad Sahimi Microbially Induced Carbonate Precipitation in the Subsurface: Fundamental Reaction and Transport Processes James Connolly and Robin Gerlach
1,560 citations
TL;DR: By using a solar cavity-receiver reactor, the oxygen uptake and release capacity of cerium oxide and facile catalysis at elevated temperatures to thermochemically dissociate CO2 and H2O, yielding CO andH2, respectively were combined and stable and rapid generation of fuel was demonstrated over 500 cycles.
Abstract: Because solar energy is available in large excess relative to current rates of energy consumption,
effective conversion of this renewable yet intermittent resource into a transportable and
dispatchable chemical fuel may ensure the goal of a sustainable energy future. However, low
conversion efficiencies, particularly with CO_2 reduction, as well as utilization of precious
materials have limited the practical generation of solar fuels. By using a solar cavity-receiver
reactor, we combined the oxygen uptake and release capacity of cerium oxide and facile catalysis
at elevated temperatures to thermochemically dissociate CO_2 and H_2O, yielding CO and H_2,
respectively. Stable and rapid generation of fuel was demonstrated over 500 cycles. Solar-to-fuel
efficiencies of 0.7 to 0.8% were achieved and shown to be largely limited by the system scale
and design rather than by chemistry.
1,257 citations
TL;DR: In this paper, a numerical simulation of forced convective incompressible flow through porous media, and the associated transport processes was employed, and a full general model for the momentum equation was employed.
605 citations