The Experts below are selected from a list of 3933 Experts worldwide ranked by ideXlab platform
Nolwenn Le Pierres - One of the best experts on this subject based on the ideXlab platform.
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review of small capacity single stage continuous absorption systems operating on binary working fluids for cooling Compact Exchanger technologies
International Journal of Refrigeration-revue Internationale Du Froid, 2020Co-Authors: Amin Altamirano, Benoit Stutz, Nolwenn Le PierresAbstract:Abstract Absorption systems have considerable potential to fight global warming and help transition to renewable energies. These machines use multifunctional Exchangers (heat and mass transfer), which have been pointed out as the “bottleneck” in the performance of such systems, especially the absorber. The present review offers an up-to-date overview of the different Exchanger technologies that have been studied and tested for small-capacity single-stage continuous absorption chillers operating on binary working fluids. The review focuses more particularly on the experimental studies of innovative Exchanger technologies with conventional or special geometries, with or without mechanical treatments, tested on the three most experimented working pairs (NH3–H2O, H2O–LiBr, and NH3–LiNO3). The use of chemical treatments is not covered. The main objective is to provide information to improve our understanding of how the Exchanger technologies used in the mentioned systems have evolved over the past 40 years as well as the advantages and disadvantages for their different uses.
Amin Altamirano - One of the best experts on this subject based on the ideXlab platform.
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review of small capacity single stage continuous absorption systems operating on binary working fluids for cooling Compact Exchanger technologies
International Journal of Refrigeration-revue Internationale Du Froid, 2020Co-Authors: Amin Altamirano, Benoit Stutz, Nolwenn Le PierresAbstract:Abstract Absorption systems have considerable potential to fight global warming and help transition to renewable energies. These machines use multifunctional Exchangers (heat and mass transfer), which have been pointed out as the “bottleneck” in the performance of such systems, especially the absorber. The present review offers an up-to-date overview of the different Exchanger technologies that have been studied and tested for small-capacity single-stage continuous absorption chillers operating on binary working fluids. The review focuses more particularly on the experimental studies of innovative Exchanger technologies with conventional or special geometries, with or without mechanical treatments, tested on the three most experimented working pairs (NH3–H2O, H2O–LiBr, and NH3–LiNO3). The use of chemical treatments is not covered. The main objective is to provide information to improve our understanding of how the Exchanger technologies used in the mentioned systems have evolved over the past 40 years as well as the advantages and disadvantages for their different uses.
Benoit Stutz - One of the best experts on this subject based on the ideXlab platform.
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review of small capacity single stage continuous absorption systems operating on binary working fluids for cooling Compact Exchanger technologies
International Journal of Refrigeration-revue Internationale Du Froid, 2020Co-Authors: Amin Altamirano, Benoit Stutz, Nolwenn Le PierresAbstract:Abstract Absorption systems have considerable potential to fight global warming and help transition to renewable energies. These machines use multifunctional Exchangers (heat and mass transfer), which have been pointed out as the “bottleneck” in the performance of such systems, especially the absorber. The present review offers an up-to-date overview of the different Exchanger technologies that have been studied and tested for small-capacity single-stage continuous absorption chillers operating on binary working fluids. The review focuses more particularly on the experimental studies of innovative Exchanger technologies with conventional or special geometries, with or without mechanical treatments, tested on the three most experimented working pairs (NH3–H2O, H2O–LiBr, and NH3–LiNO3). The use of chemical treatments is not covered. The main objective is to provide information to improve our understanding of how the Exchanger technologies used in the mentioned systems have evolved over the past 40 years as well as the advantages and disadvantages for their different uses.
Sidramappa Alur - One of the best experts on this subject based on the ideXlab platform.
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Experimental studies on plate finheat Exchangers
2012Co-Authors: Sidramappa AlurAbstract:Heat Exchangers used in cryogenic applications need to have very high effectiveness to preserve the refrigerating effect produced. Normally the heat Exchangers used in cryogenic refrigerators and liquefiers have effectiveness of the order of 0.95 or higher. If the effectiveness of the heat Exchangers falls below the design value, there may not be any liquid yield. Plate fin heat Exchangers, because of their Compactness, low weight and high effectiveness, are widely used in aerospace and cryogenic applications. Such heat Exchangers have closely spaced fins and offer narrow and intricate passages for the fluid flow which often leads to significant pressure drop. The stringent requirement of high effectiveness in cryogenic refrigerators and liquefiers and high pressure drop occurring in plate fin heat Exchangers make it necessary to test the heat Exchanger before putting into operation in a liquefier.Plate fin heat Exchanger (PFHE) is a type of Compact Exchanger that consists of a stack of alternate flat plates called parting sheets and corrugated fins, both being brazed together as a block. Streams exchange heat by flowing along the passages made by the fins between the parting sheets. Separating plates act as the primary heat transfer surfaces and the appendages known as fins act as the secondary heat transfer surfaces intimately bonded to the primary surface. Aluminum is the most commonly used material and stainless steel is employed in high pressure and high temperature applications.
Kuppan Thulukkanam - One of the best experts on this subject based on the ideXlab platform.
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heat Exchanger design handbook
2013Co-Authors: Kuppan ThulukkanamAbstract:Heat Exchangers: Introduction, Classification, and Selection Introduction Construction of Heat Exchangers Classification of Heat Exchangers Selection of Heat Exchangers Requirements of Heat Exchangers Heat Exchanger Thermohydraulic Fundamentals Heat Exchanger Thermal Circuit and Overall Conductance Equation Heat Exchanger Heat Transfer Analysis Methods Thermal Effectiveness Charts Symmetry Property and Flow Reversibility and Relation between the Thermal Effectiveness of Overall Parallel and Counterflow Heat Exchanger Geometries Temperature Approach Meet, and Temperature Cross Thermal Relation Formulas for Various Flow Arrangements and Pass Arrangements Heat Exchanger Thermal Design Fundamentals of Heat Exchanger Design Methodology Design Procedure Heat Exchanger Design Problems Computer-Aided Thermal Design Pressure-Drop Analysis, Temperature-Dependent Fluid Properties, Performance Failures, Flow Maldistribution, Fouling, and Corrosion Cooperative Research Programs on Heat Exchanger Design Uncertainties in Thermal Design of Heat Exchangers Compact Heat Exchangers Classification and Construction Details of Tube-Fin Compact Heat Exchangers Plate-Fin Heat Exchangers Surface Geometrical Relations Factors Influencing Tube-Fin Heat Exchanger Performance Thermohydraulic Fundamentals of Finned Tube Heat Exchangers Correlations for j and f factors of Plate-Fin Heat Exchangers Fin Efficiency Rating of a Compact Exchanger Sizing of a Compact Heat Exchanger Effect of Longitudinal Heat Conduction on Thermal Effectiveness Air-Cooled Heat Exchanger Shell and Tube Heat Exchanger Design Construction Details for Shell and Tube Exchangers Tubes Tube Arrangement Baffles Tubesheet and Its Connection with Shell and Channel Tube Bundle Shells Pass Arrangement Fluid Properties and Allocation Classification of Shell and Tube Heat Exchangers TEMA System for Describing Heat Exchanger Types Differential Thermal Expansion TEMA Classification of Heat Exchangers Based on Service Condition Shell and Tube Heat Exchanger Selection Shellside Clearances Tube-to-Baffle-Hole Clearance Shell-to-Baffle Clearance Shell-to-Bundle Clearance Bypass Lanes Regenerators Introduction Heat Exchangers Used for Regeneration Rotary Regenerative Air Preheater Comparison of Recuperators and Regenerators Considerations in Establishing a Heat Recovery System Regenerator Construction Material Thermal Design: Hydraulic Fundamentals Thermal Design Theory Mechanical Design Industrial Regenerators and Heat Recovery Devices Rotary Heat Exchangers for Space Heating Plate Heat Exchangers and Spiral Plate Heat Exchangers Plate Heat Exchanger Construction: General Benefits Offered by Plate Heat Exchangers Comparison between a Plate Heat Exchanger and a Shell and Tube Heat Exchanger Plate Heat Exchanger: Detailed Construction Features Brazed Plate Heat Exchanger Other Forms of Plate Heat Exchangers Thermohydraulic Fundamentals of Plate Heat Exchangers PHE Thermal Design Methods Corrosion of Plate Heat Exchangers Fouling Limitations of Plate Heat Exchangers Spiral Plate Heat Exchangers PLATECOIL(R) Prime Surface Plate Heat Exchangers Heat Transfer Augmentation Introduction Application of Augmented Surfaces Principle of Single-Phase Heat Transfer Enhancement Approaches and Techniques for Heat Transfer Enhancement Heat Transfer Mode Passive Techniques Active Techniques Friction Factor Pertinent Problems Phase Change Major Areas of Applications Fouling Effect of Fouling on the Thermohydraulic Performance of Heat Exchangers Costs of Heat Exchanger Fouling Fouling Curves/Modes of Fouling Stages of Fouling Fouling Model Parameters That Influence Fouling Resistances Mechanisms of Fouling Fouling Data How Fouling Is Dealt while Designing Heat Exchangers TEMA Fouling Resistance Values Fouling Monitoring Expert System Fouling Prevention and Control Cleaning of Heat Exchangers Foulant Control by Chemical Additives Control of Fouling from Suspended Solids Cooling-Water Management for Reduced Fouling Flow-Induced Vibration of Shell and Tube Heat Exchangers Principles of Flow-Induced Vibration Discussion of Flow-Induced Vibration Mechanisms Turbulence-Induced Excitation Mechanism Fluid Elastic Instability Acoustic Resonance Vibration Evaluation Procedure Design Guidelines for Vibration Prevention Baffle Damage and Collision Damage Empirical Checks for Vibration Severity Impact and Fretting Wear Determination of Hydrodynamic Mass, Natural Frequency, and Damping Mechanical Design of Shell and Tube Heat Exchangers Standards and Codes Basics of Mechanical Design Stress Analysis, Classes, and Categories of Stress Tubesheet Design Cylindrical Shell, End Closures, and Formed Heads under Internal Pressure Bolted Flanged Joint Design Expansion Joints Opening and Nozzles Supports Corrosion Basics of Corrosion Forms of Corrosion Corrosion of Weldments Corrosion Prevention and Control Corrosion Monitoring Cooling-Water Corrosion Material Selection for Hydrogen Sulfide Environments Material Selection and Fabrication Material Selection Principles Equipment Design Features Raw Material Forms Used in the Construction of Heat Exchangers Materials for Heat Exchanger Construction Plate Steels Pipes and Tubes Weldability Problems Hot Cracking Laboratory Tests to Determining Susceptibility to Cracking Service-Oriented Cracking Welding-Related Failures Selection of Cast Iron and Carbon Steels Low-Alloy Steels Quenched and Tempered Steels Chromium-Molybdenum Steels Stainless Steels Ferritic Stainless Steels Duplex Stainless Steels Superaustenitic Stainless Steels with Mo + N Aluminum Alloys: Metallurgy Copper Nickel and Nickel-Base Alloys Metallurgy and Properties Titanium: Properties and Metallurgy Zirconium Tantalum Graphite, Glass, Teflon, and Ceramics Graphite Glass Teflon Ceramics Hexoloy(R) Silicon Carbide Heat Exchanger Tube Cladding Postweld Heat Treatment of Welded Joints in Steel Pressure Vessels and Heat Exchangers Quality Control and Quality Assurance, Inspection, and Nondestructive Testing Quality Control and Quality Assurance Inspection Welding Design Nondestructive Testing Methods Heat Exchanger Fabrication Introduction to Fabrication of the Shell and Tube Heat Exchanger Details of Manufacturing Drawing Stages of Heat Exchanger Fabrication Forming of Heads and Closures Brazing Elements of Brazing Fundamentals of Brazing Process Control Brazing of Aluminum Brazing of Heat-Resistant Alloys and Stainless Steel Quality Control, Inspection, and NDT of Brazed Heat Exchangers Soldering of Heat Exchangers Corrosion of Brazed and Soldered Joints Evaluation of Design and Materials of Automotive Radiators CuproBraze Heat Exchanger Heat Exchanger Installation, Operation, and Maintenance Storage Installation Operation Maintenance Periodical inspection of Unit Indications of Fouling Deterioration of Heat Exchanger Performance NDT Methods to Inspect and Assess the Condition of Heat Exchanger and Pressure Vessel Components Residual Life Assessment of Heat Exchangers by NDT Techniques Pressure Vessel Failure Professional Service Providers for Heat Exchangers References Index