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Heat engines. Steam engines --- Transport engineering --- Railway traffic --- stoomlocomotieven --- Netherlands
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Heat engines. Steam engines --- Music --- orgels --- piano's --- harmoniums
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This book offers a practical introduction to helium refrigeration engineering, taking a logical and structured approach to the design, building, commissioning, operation and maintenance of refrigeration systems. It begins with a short refresher of cryogenic principles, and a review of the theory of heat exchangers, allowing the reader to understand the importance of the heat exchanger role in the various thermodynamic cycle structures. The cycles are considered from the simplest (Joule Thomson) to the most complicated ones for the very large refrigeration plants and, finally, those operating at temperatures lower than 4.5 K. The focus then turns to the operation, ability and limitations of the main components, including room temperature cycle screw compressors, heat exchangers, cryogenic expansion turbines, cryogenic centrifugal compressors and circulators. The book also describes the basic principles of process control and studies the operating situations of helium plants, with emphasis on high level efficiency. A major issue is helium purity, and the book explains why helium is polluted, how to purify it and then how to check its purity, to ensure that all components are filled with pure helium prior to starting. Although the intention of the book is not to design thermodynamic cycles, it is of interest to a designer or operator of a cryogenic system to perform some simplified calculations to get an idea of how components or systems are behaving. Throughout the book, such calculations are generally performed using Microsoft® Excel and the Gaspak® or Hepak® software. .
Thermodynamics --- Physics --- Materials sciences --- Heat engines. Steam engines --- Fuels --- thermodynamica --- koude --- ingenieurswetenschappen --- fysica --- warmteoverdracht
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This Brief concerns heat transfer and pressure drop in heat transfer enhancement for boiling and condensation. The authors divide their topic into six areas: abrasive treatment and coatings, combined structured and porous surfaces, basic principles of boiling mechanism, vapor space condensation, convective vaporization, and forced condensation inside tubes. Within this framework, the book examines range of specific phenomena including abrasive treatment, open grooves, 3D cavities, etched surfaces, electroplating, pierced 3D cover sheets, attached wire and screen promoters, non-wetting coatings, oxide and ceramic coatings, porous surfaces, structured surfaces (integral roughness), combined structured and porous surfaces, composite surfaces, single-tube pool boiling tests, theoretical fundamentals like liquid superheat, effect of cavity shape and contact angle on superheat, entrapment of vapor in cavities, nucleation at a surface cavity, effect of dissolved gases, bubble departure diameter, bubble dynamics, boiling hysteresis and orientation effects, basic principles of boiling mechanism, visualization and mechanism of boiling in subsurface tunnels, and Chien and Webb parametric boiling studies. .
Fluid mechanics --- Thermodynamics --- Materials sciences --- Heat engines. Steam engines --- Fuels --- thermodynamica --- materiaalkennis --- ingenieurswetenschappen --- fysica --- vloeistoffen --- warmteoverdracht
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This Brief describes heat transfer and pressure drop in heat transfer enhancement by insert devices and integral roughness. The authors deal with twisted-tape insert laminar and turbulent flow in tubes and annuli in smooth tubes and rough tubes, segmented twisted-tape inserts, displaced enhancement devices, wire coil inserts, extended surface inserts and tangential injection devices. The articles also address transverse and helical integral rib roughness, corrugated tube roughness, 3D and 2D roughness, rod bundles, outside roughness for cross flow, non-circular channels, Reynolds analogy and similarity law, numerical simulation and predictive models. The book is ideal for professionals and researchers working with thermal management in devices. .
Fluid mechanics --- Thermodynamics --- Materials sciences --- Heat engines. Steam engines --- Fuels --- thermodynamica --- materiaalkennis --- ingenieurswetenschappen --- fysica --- vloeistoffen --- warmteoverdracht
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Thermodynamics --- Internal combustion engines --- Transport engineering --- thermodynamica --- transport --- ingenieurswetenschappen --- verbrandingsmotoren
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Heat engines. Steam engines --- Machinery --- Rotary combustion engines --- Turbines --- Hydraulic machinery --- Machines --- Moteurs rotatifs --- Machines hydrauliques --- Periodicals. --- Périodiques --- Engineering --- Physics --- Electrical Engineering --- Mechanical Engineering --- Production Technology --- Mechanics --- Hydraulic machinery. --- Machinery. --- Rotary combustion engines. --- Turbines. --- rotating machinery --- rotor --- Engines --- Hydraulic motors --- Turbomachines --- Rotary engines (Internal combustion engines) --- Internal combustion engines --- Hydraulic equipment --- Fluid power technology --- Manufactures --- Power (Mechanics) --- Technology --- Mechanical engineering --- Motors --- Power transmission --- Curious devices --- rotors --- Civil engineering. Building industry
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This monograph addresses the foundations of mechanothermodynamics and analyzes two of its key principles—damage of everything that exists has no conceivable limits, and effective energy (entropy) flows caused by loads of a different nature do not have a cumulative property; they interact dialectically. The authors examine a generalized model of energy and entropy states of a mechanothermodynamical medium, which generally is a continuum (liquid, gaseous) containing distributed solid deformable, and, therefore, damageable bodies, as a problem of information states of movable and damageable systems and express a solution in the first approximation. The book goes on to analyze some directions of further research in its conclusion. It is ideal for scientists, engineers, post graduate and master students of mechanics, mathematics and physics.
Thermodynamics --- Mechanical properties of solids --- Materials sciences --- Heat engines. Steam engines --- Applied physical engineering --- Fuels --- thermodynamica --- materiaalkennis --- ingenieurswetenschappen --- fysica --- warmteoverdracht
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