Heat exchanger engineering design and simulation calculations
Thread Content
1. An introduction to the modifications and additions made to \"Heat Exchangers\" (GB/T151-2014) compared with GB151-1999. 2. The input and output of the basic parameters for the functions and modules of two common simulation software programs used for heat exchangers； How to use this series of software to simulate the physical properties of a new substance ； Viewing and adjusting the simulated final results, as well as outputting/exporting the results ； How to import physical properties generated by other software (such as ASPEN PLUS) into HTRI and EDR ； Calculation methods for material properties within the software. 3. Shell-and-tube structure, selection and matching of tube-side parameters, head selection (TEMA and GB151), shell selection (TEMA and GB151), heat exchange tube selection (reference standards, material selection, specifications and models), tube arrangement and stratification, baffle installation (baffle types, spacing, placement, and cuts), gap setting, nozzle definition, flow guiding structure setup (GB151 O-type shell), anti-scouring structure setup, and other settings. (II) 1. Examples and questions & answers regarding single-phase shell-and-tube heat exchangers 2. Design and optimization of heat exchangers without phase change: gas-water heat exchangers, gas-gas heat exchangers, oil-water heat exchangers, water-water heat exchangers 3. Design and optimization of condensers; common condenser structures ； Classification of condensation flow patterns ； Low-pressure waste steam condenser (1 case) ； Medium and high pressure process steam condenser (1 example) ； Top reflux condenser (1 case). 4. Design and optimization of reboilers: Conventional reboiler design (2 examples) ； Thermal siphon reboiler (1 example) ； Falling film reboiler (1 case). 5. Using engineering examples, explain how structural optimization can be employed to prevent vibration in heat exchanger tubes (III). 1. Introduction to the structures of air coolers, economizers, etc., as well as the settings for the air cooler’s structure, tube span, fans, tube bundles, heat exchange tubes and fins, and other structural components. 2. Present the output report using practical examples (summary table of results, overall output table, detailed analysis of the inner and outer sides of the pipes), along with optimization directions and classification of common issues. 3. Practical example and optimization Example 1: Conventional air cooler (design-check) ； Example 2: Economizer (verification) ； Example 3: Natural air cooling (simulation). Example 4: Air cooling in the refrigeration industry (design under verification mode). 4. Calculation of heat flow rate for heat exchangers ； Wall temperature calculation ； Flow resistance of the fluid in the heat exchanger ； Verification of the main structural dimensions of the heat exchanger. 5. Cost analysis of shell-and-tube heat exchangers 6. Software operation practice*, Q&A (IV) 1. Engineering design and simulation calculations for plate heat exchangers: Explanation of the most common types of plate heat exchangers currently in use, process setup (use of upper and lower plates), arrangement of corner holes, and parameter optimization. 2. Present the output report using examples (summary table of results, overall output table, detailed analysis of the cold and hot sides), along with optimization directions and classification of common issues. 3. Example explanations and optimization of plate heat exchangers – If you’re interested, please leave your contact information①③⑦①⑥⑤③⑨⑨②①
1. The main modifications and additions to \"Heat Exchangers\" (GB/T151-2014) compared to GB151-1999 include: the improvement and enhancement of the design and calculation methods for heat exchangers, updates to the regulations regarding material selection and strength calculations, the addition of requirements related to environmental protection and energy efficiency, as well as updates to the relevant inspection and testing standards. 2. Heat exchanger simulation software such as HTRI and EDR can be used for the design, evaluation, and optimization of heat exchangers. The input of basic parameters includes physical properties and process conditions, while the output results include thermodynamic properties, geometric dimensions, fluid distribution, etc. To simulate the physical properties of a new substance, the user needs to input its basic thermodynamic and transport properties. Results can be viewed and adjusted, and exported as reports or data files. Property data generated by other software can be imported in a specific format. The methods for calculating internal material properties in software are generally based on established thermodynamic models and relevant databases. 3. The design of shell-and-tube heat exchangers involves the selection and matching of tube-side parameters, end caps, shells, and heat exchange tubes, with reference to the TEMA and GB151 standards. The pipe layout, baffle placement, gaps, and nozzle definitions all need to be optimized based on the specific application. For example, the baffle type is selected based on flow and heat transfer requirements, while the spacing and placement affect heat exchange efficiency and pressure drop. (II) The given example problems and design optimizations include the design and optimization methods for single-phase shell-and-tube heat exchangers, phase-change-free heat exchangers, condensers, and reboilers. It also introduces strategies for avoiding vibration in heat exchanger tube bundles through structural optimization. (III) It introduces the structure and design key points of special heat exchange equipment such as air coolers and economizers, including tube span, fans, tube bundles, and fin arrangements. Examples are used to demonstrate the design verification, simulation, and optimization processes. (IV) The design and simulation of plate heat exchangers cover key parameters such as plate selection, flow configuration, and corner hole arrangement. Examples are provided to illustrate the content of the output reports, optimization directions, and solutions to common problems. The above content covers the basic theories of heat exchanger design and simulation, software applications, as well as optimization strategies for specific types of heat exchangers, providing valuable references for engineering design and practical applications. .
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