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Supercritical Gas Cooling And Near Critical Pressure Condensation Of Refrigerant Blends In Microchannels
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Book Synopsis Supercritical Gas Cooling and Near-critical-pressure Condensation of Refrigerant Blends in Microchannels by : Ulf Christian Andresen
Download or read book Supercritical Gas Cooling and Near-critical-pressure Condensation of Refrigerant Blends in Microchannels written by Ulf Christian Andresen and published by . This book was released on 2007 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: The physical understanding and models resulting from this investigation provide the information necessary for designing and optimizing new components that utilize R410A for air-conditioning and heat pumping applications.
Book Synopsis Supercritical Gas Cooling and Condensation of Refrigerant R410A at Near-critical Pressures by : Biswajit Mitra
Download or read book Supercritical Gas Cooling and Condensation of Refrigerant R410A at Near-critical Pressures written by Biswajit Mitra and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive study of heat transfer and pressure drop of refrigerant R410A during condensation and supercritical cooling at near-critical pressures was conducted. Investigations were carried out at five nominal pressures: 0.8, 0.9, 1.0, 1.1 and 1.2xpcrit. The refrigerant was tested in commercially available horizontal smooth tubes of 6.2 and 9.4 mm I.D. Heat transfer coefficients were measured using a thermal amplification technique that measures heat duty accurately while also providing refrigerant heat transfer coefficients with low uncertainties. For condensation tests, local heat transfer coefficients and pressure drops were measured for the mass flux range 200
Book Synopsis Encyclopedia Of Two-phase Heat Transfer And Flow I: Fundamentals And Methods (A 4-volume Set) by : John R Thome
Download or read book Encyclopedia Of Two-phase Heat Transfer And Flow I: Fundamentals And Methods (A 4-volume Set) written by John R Thome and published by World Scientific. This book was released on 2015-08-14 with total page 1109 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of the two-set series is to present a very detailed and up-to-date reference for researchers and practicing engineers in the fields of mechanical, refrigeration, chemical, nuclear and electronics engineering on the important topic of two-phase heat transfer and two-phase flow. The scope of the first set of 4 volumes presents the fundamentals of the two-phase flows and heat transfer mechanisms, and describes in detail the most important prediction methods, while the scope of the second set of 4 volumes presents numerous special topics and numerous applications, also including numerical simulation methods.Practicing engineers will find extensive coverage to applications involving: multi-microchannel evaporator cold plates for electronics cooling, boiling on enhanced tubes and tube bundles, flow pattern based methods for predicting boiling and condensation inside horizontal tubes, pressure drop methods for singularies (U-bends and contractions), boiling in multiport tubes, and boiling and condensation in plate heat exchangers. All of these chapters include the latest methods for predicting not only local heat transfer coefficients but also pressure drops.Professors and students will find this 'Encyclopediaa of Two-Phase Heat Transfer and Flow' particularly exciting, as it contains authored books and thorough state-of-the-art reviews on many basic and special topics, such as numerical modeling of two-phase heat tranfser and adiabatic bubbly and slug flows, the unified annular flow boiling model, flow pattern maps, condensation and boiling theories, new emerging topics, etc.
Download or read book Heat Transfer written by Salim Newaz Kazi and published by BoD – Books on Demand. This book was released on 2015-07-29 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the wake of energy crisis due to rapid growth of industries, the efficient heat transfer could play a vital role in energy saving. Industries, household equipment, transportation, offices, etc., all are dependent on heat exchanging equipment. Considering this, the book has incorporated different chapters on heat transfer phenomena, analytical and experimental heat transfer investigations, heat transfer enhancement and applications.
Book Synopsis Localized Energy Transition in the 4th Industrial Revolution by : Opeyeolu Timothy Laseinde
Download or read book Localized Energy Transition in the 4th Industrial Revolution written by Opeyeolu Timothy Laseinde and published by CRC Press. This book was released on 2024-10-24 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a holistic view on localized energy transition while addressing current challenges associated with the production of biofuels, introducing new materials to produce solar photovoltaic (PV) panels, and digital systems for sustainable energy monitoring on a small scale, carbon capture, and sequestration. Also, each chapter of the book addresses specific aspects of the renewable and sustainable energy space while focusing more on energy improvement and storage technologies that are practical focused. Features: Offers useful information on new forms of renewable energy generation with reference to Industry 4.0. Illustrates practical approaches to energy transition. Provides guidance on renewable energy sources and energy storage systems. Discusses the application of the Fourth Industrial Revolution (4IR)-related approaches to emerging energy storage technologies. Includes studies that reveal approaches to realizing productivity, profitability, and increased return on investment (ROI). This book is aimed at graduate students and researchers in mechanical, chemical, and mechatronics engineering and renewable energy systems.
Book Synopsis Heat Transfer and Pressure Drop of Refrigerant R404A at Near-critical and Supercritical Pressures by : Yirong Jiang
Download or read book Heat Transfer and Pressure Drop of Refrigerant R404A at Near-critical and Supercritical Pressures written by Yirong Jiang and published by . This book was released on 2004 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive study of heat transfer and pressure drop of refrigerant R404A during condensation and supercritical cooling at near-critical pressures insde a 9.4mm tube was conducted. Investigations were carred out at five nominal pressures: 0.8, 0.9, 1.0, 1.1 and 1.2xP[subscript crit]. Heat transfer coefficients were measured using a thermal amplification technique that measures heat duty accurately while also providing refrigerant heat transfer coefficients with low uncertainties. For condensation tests, local heat transfer coefficients and pressure drops were measured for the mass flux range 200
Book Synopsis Heat Transfer and Pressure Drop During Condensation of Refrigerants in Microchannels by : Akhil Agarwal
Download or read book Heat Transfer and Pressure Drop During Condensation of Refrigerants in Microchannels written by Akhil Agarwal and published by . This book was released on 2006 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results from the current study thus make an important contribution to the understanding of pressure drop and heat transfer mechanisms during condensation in microchannels. The proposed model may be used by engineers for analyzing condensing two-phase flow in microchannels.
Book Synopsis Heat Transfer and Pressure Drop During In-tube Evaporation and Condensation of Near-azeotropic Refrigerant Blends by : M. B. Pate
Download or read book Heat Transfer and Pressure Drop During In-tube Evaporation and Condensation of Near-azeotropic Refrigerant Blends written by M. B. Pate and published by . This book was released on 1990 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Heat Transfer and Mechanical Design Analysis of Supercritical Gas Cooling Process of CO2 in Microchannels by :
Download or read book Heat Transfer and Mechanical Design Analysis of Supercritical Gas Cooling Process of CO2 in Microchannels written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transcritical CO2 Heat Pump by : Xin-rong Zhang
Download or read book Transcritical CO2 Heat Pump written by Xin-rong Zhang and published by John Wiley & Sons. This book was released on 2021-02-17 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: A timely and comprehensive introduction to CO2 heat pump theory and usage A comprehensive introduction of CO2 application in heat pump, authored by leading scientists in the field CO2 is a hot topic due to concerns over global warming and the 'greenhouse effect'. Its disposal and application has attracted considerable research and governmental interest Explores the basic theories, devices, systems and cycles and real application designs for varying applications, ensuring comprehensive coverage of a current topic CO2 heat transfer has everyday applications including water heaters, air-conditioning systems, residential and commercial heating systems, and cooling systems
Book Synopsis Computational Design Approach for Microchannel Cold Plate Cooled with Supercritical Carbon Dioxide by : Mateusz Ostasz
Download or read book Computational Design Approach for Microchannel Cold Plate Cooled with Supercritical Carbon Dioxide written by Mateusz Ostasz and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supercritical fluids have attracted increased attention over the past couple decades due to their unique heat transfer properties compared to conventional fluids at near-critical conditions. Such properties may be advantageous for high heat flux thermal management as this aspect becomes more demanding as technology progresses and requires sufficient cooling to sustain operation. This Thesis seeks to assess whether supercritical carbon dioxide (sCO_2) can outperform water for high flux thermal management via a mini/microchannel cold plate. To address this question, supercritical fluid channel flow heat transfer correlations were first assessed and downselected to permit performance comparison with conventional liquid coolants. Correlations were assessed using published Large Eddy Simulation (LES) and new Reynolds Averaged Navier Stokes (RANS) datasets. Next, parametric studies were conducted to identify microchannel geometries and operating regimes in which sCO_2 could outperform water in terms of pump work per cooled device area. Specifically, 2D conjugate heat transfer studies were performed to optimize channel geometry and minimize specific pump work given cooling requirements. Using the optimized channel geometry, a CFD-based topology and geometry optimization method was developed to optimize the flow distributer (header) design, seeking to balance flow distribution and pressure loss objectives. Based on the correlation assessment using established LES and RANS CFD datasets, Li et al [1] was evaluated to be the most appropriate correlation to model the heat transfer coefficient for the mini/microchannel cold plate. In the conjugate heat transfer studies, sCO_2 performed best with narrow channels with high aspect ratios at lower temperatures compared to water. It was superior to water at lower temperature limits of 70°C or lower for the entire range of pump work requirements. At higher temperatures, it is superior only at low pump works. For the header optimization, the headers contain elongated vanes that most optimally facilitate uniform flow and minimized pressure losses compared to conventional uniformly spaced vanes. Overall, there was significant improvement in the flow distribution from an open header to one with vanes; however, it resulted in a large increase in pressure drop. This was true for both 6 and 8 vane configurations.
Book Synopsis Study of Condensation of Refrigerants in Micro-channels for Development of Future Compact Micro-channel Condensers by : Sourav Chowdhury
Download or read book Study of Condensation of Refrigerants in Micro-channels for Development of Future Compact Micro-channel Condensers written by Sourav Chowdhury and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Properties and Cycle Performance of Refrigerant Blends Operating Near and Above the Refrigerant Critical Point. Task 2 by : P. A. Domanski
Download or read book Properties and Cycle Performance of Refrigerant Blends Operating Near and Above the Refrigerant Critical Point. Task 2 written by P. A. Domanski and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transcritical CO2 Heat Pump by : Xin-rong Zhang
Download or read book Transcritical CO2 Heat Pump written by Xin-rong Zhang and published by John Wiley & Sons. This book was released on 2021-05-10 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: A timely and comprehensive introduction to CO2 heat pump theory and usage A comprehensive introduction of CO2 application in heat pump, authored by leading scientists in the field CO2 is a hot topic due to concerns over global warming and the 'greenhouse effect'. Its disposal and application has attracted considerable research and governmental interest Explores the basic theories, devices, systems and cycles and real application designs for varying applications, ensuring comprehensive coverage of a current topic CO2 heat transfer has everyday applications including water heaters, air-conditioning systems, residential and commercial heating systems, and cooling systems
Book Synopsis Bulletin de L'Institut International Du Froid by :
Download or read book Bulletin de L'Institut International Du Froid written by and published by . This book was released on 2008 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Phase Change by : S.G. Kandlikar
Download or read book Handbook of Phase Change written by S.G. Kandlikar and published by Routledge. This book was released on 2019-01-22 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a comprehensive coverage of the basic phenomena. It contains twenty-five chapters which cover different aspects of boiling and condensation. First the specific topic or phenomenon is described, followed by a brief survey of previous work, a phenomenological model based on current understanding, and finally a set of recommended design equa
Book Synopsis Laminar Flow Forced Convection in Ducts by : R. K. Shah
Download or read book Laminar Flow Forced Convection in Ducts written by R. K. Shah and published by Academic Press. This book was released on 2014-06-28 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laminar Flow Forced Convection in Ducts is a sourcebook for compact heat exchanger analytical data. This book describes the analytical solutions for laminar fluid flow and forced convection heat transfer in circular and noncircular pipes, including applicable differential equations and boundary conditions involving velocity and temperature problems of fluid flow. The book also discusses fluid flow—how much power is required to pump fluids through the heat exchanger, as well as the heat transfer—the determination of q" distribution, and the temperature of fluid and walls. The text also analyzes the coolant or heat transfer fluid flows in a nuclear power reactor composed of a bundle of circular section fuel rods located inside a round tube. R.A. Axford addresses fluid flow and heat transfers results for the rod bundle geometry in "Heat Transfer in Rod Bundles." The book also provides an overview and guidelines that can be used for the designer and the applied mathematician. This book is suitable for engineers working in electronics, aerospace, instrumentation, and biomechanics that use cooling or heating exchanges or solar collection systems.
