This study will utilize these new software tools and compare the. The design of heat exchanger network systems hen s is carried out within a module of 18 h, comprising the mathematical basis of optimization 8 h and the design of heat exchanger network systems employing these optimization methods 8 h. Optimization of heat exchanger design parameters for. A methodology based on a command procedure has been developed to run the htri design program coupled to the annealing algorithm, iteratively. A common type of exchanger used worldwide is shellandtube heat exchanger sthe which has a limit to facilitate exchange of heat from two streams, one hot and one cold. He also presented pil consultant dr mary akpomiemies work on new developments in heat exchanger network retrofit. Heat sink design goals may vary, but in this report, optimization of the vertical heat sink is the main objective. Both horizontal and vertical heat exchangers can be modeled. Topology optimization is proving to be a valuable design tool for physical systems, especially for structural systems. Develop a software that is capable of tracking the fouling behavior of a specific heat exchanger network using process data. Process optimization by energy and resource analysis.
Optimization of heat exchanger design parameters for hydrocarbon refrigerant systems s. The optimization of a heat exchanger design can be viewed at three different levels. International journal of heat and mass transfer 2016, 95, 109115. The superstructure consists of two stages with eight possible exchangers. A user guide on process integration for the efficient use of energy, 2nd edition. Heat exchangers basics for efficient heat integration. The general heat exchanger design problem can be posed as a largescale discrete optimization problem, and sa was found to be well suited for this type of heat exchanger design problem. Optimal heat exchanger network synthesis using particle swarm. Multiobjective topology optimization of additively. Activated energy analysis quickly identifies changes to the heat exchanger network, such as exchanger additions or relocations to recover energy in the process. Calculate targets for energy and capital investment. For this purpose, einstein analyses process and utility streams as well as available waste heat, and identifies the potential for heat recovery by. This optimization procedure was applied to the optimal hen exchanger. Pinch analysis design of optimised heat exchanger network the heat recovery module helps in designing and optimising an appropriate heat exchanger network for heat recovery and process integration.
The idea behind this proposal is that to apply the combination of specific hen optimisation and reliability software packages has several advantages over the commonly used approach. The presentation opened by addressing the challenges in obtaining costeffective retrofit of heat exchanger networks hens. Reliability, availability and maintenance optimisation of. This work explores a twostep, complexity reducing methodology, to analyze heat integration opportunities of an existing olefins plant, identify and quantify reduction of energy consumption, and propose changes of the existing heat exchanger network to achieve these goals. There is a variety of features that need to be taken into. Optimization of heat exchanger networks journal article. Heat exchanger design is a heat transfer simulation software that enables the design and operational analysis of individual heat exchangers, as well as heat exchanger networks, pinch analysis, exchanger zone analysis, split flow, area payout, and cleaning cycle optimisations. This article introduces a new strategy for hen optimization using differential evolution algorithm. Most of papers published in this subject are based on pinch analysis and mathematical programming. Optimal design of network of heat exchangers in parallel with recirculation with two hot streams and one cold stream reference neculai andrei, nonlinear optimization applications using the gams technology,springer optimization and its applications, model heatex3 7. Network optimization tools to optimize networks solarwinds. Bandwidth analyzer pack bap is designed to help you better understand your network, plan for various contingencies, and track down problems when they do occur. Welcome to the online pinch analysis tool, an interactive webbased program that automates much of the process of performing a basic pinch analysis.
Design shell and tube heat exchangers with models and correlations based on more than 35 years of aspen htfs proprietary research, providing the user with assurance of reliable designs. Htri offers a wide range of software solutions for heat transfer equipment used by operating companies, engineering contractors, exchanger fabricators, and related industries. Presentation focuses on understanding key prinicples, processes and problem solving rather than. Aspentechs energy management software, aspen energy analyzer, provides an easy environment to perform optimal heat exchanger network design and retrofit. Also, the incorporation of software optimization with the process pinch methodology allows proii to optimize heat exchanger areas while maintaining stream target temperatures. Process optimization by energy and resource analysis uday v. Exchanger optimizer simplifies the complicated design process and could potentially save your company millions. Heat exchanger network synthesis by simulated annealing, a new multivariable optimization method based on the mathematical theory of markov chains, has recently been reported by dolan et al.
Heat exchanger software engineering software and tools. Heat exchanger network design, monitoring and optimization. Bandwidth analyzer pack analyzes hopbyhop performance onpremise, in hybrid networks, and in the cloud, and can help identify excessive bandwidth utilization or unexpected. Shenoy gulf professional publishing, 1995 science 642 pages. Xchanger suite is software for the rating, simulation, andor design of a wide variety of heat transfer equipment. The optimization result shows the design of heat exchanger by using coil wire insert technology provides the lowest cost compare to modern technologies of heat exchanger and conventional of heat. The results of this work show that computational efforts of the optimization increase as the size of the heat exchanger network is progressively augmented. This model designs a heat exchanger network which operates at minimal annual cost and satisfies heating and cooling require ments. Exchanger optimizer allows engineers to consider fabrication, installation, and operational costs in heat exchanger design decisions.
Heat exchanger network simulation, data reconciliation. Unlike other tools, ensures that the calculations are performed step by step to help in understanding the design calculations. Optimal heat exchanger network synthesis using particle. Mathematical optimization techniques are widely used in the solution of every kind of problems of chemical engineering biegler et al. For existing installations, iheat can analyze the network performance and find operational and retrofit modifications that maximize energy recovery and profitability. Abstract this article presents a generalized methodology of a heat exchanger network process optimization taking as an example a natural gas processing plant wdgc western desert gas complex of the egypt national natural gas company gasco with the use of process engineering specialized software from aspentech and gams technology companies. Application of the microsoft excel solver tool in the. It is also known as process integration, heat integration, energy integration or pinch technology. Presented here is a new heat exchanger network simulation algorithm which so lves rigorously heat exchanger network equations in three phases. Using this tool, it is possible to cut down on unnecessary energy use, for a less expensive and greener process design. They are taught during january and february, which is followed by a theoretical examination in march 2 h. The results indicate that the proposed multistage optimization algorithm of heat exchanger networks is better in all cases than those obtained using traditional optimization methods such as pinch analysis method and mathematical optimization method. Now, welltailored heatexchangernetwork software programs are available for optimizing a plants overall heattransfer operations. This can be combined with the entire activation workflow to maximize process parameter definition and optimization.
Heat exchanger design is a heattransfer simulation software that enables the design and operational analysis of individual heat exchangers, as well as heat exchanger networks, pinch analysis, exchanger zone analysis, split flow, area payout, and cleaning cycle optimisations. Optimization of heat exchanger network request pdf. Influence of possible disturbances and control is analyzed through dynamic simulation. While heat exchanger networks try to optimize the energy costs for heating and cooling utility, capital costs are often difficult to calculate and incorporate in the analysis. This can only be used if you have optimization toolbox installed. Then is a heat exchanger network synthesis program that was developed by professor f. Optimizing cleaning schedules of heat exchanger networks. Npm is built to automate capacity forecast planning with its ability to calculate exhaustion dates based on peak and average usage from userdefined thresholds. Yee, t f, and grossmann, i e, simultaneous optimization of models for heat integration ii. New developments in heat exchanger network retrofit. Bullard acrc tr233 september 2004 for additional information. Energy saver optimize heat exchangers chemical processing. Heat exchanger networks are designed to reach energy targets obtained by the problem table analysis with the help of the pinch design method.
Aspen shell and tube exchanger asset optimization software. The basic idea of heat exchanger network hen is using cold streams to cool hot streams and hot streams to heat cold streams. The key decision variables are the cleaning of a specific heat exchanger in a specific period. Smartpm performance monitoring, analysis, and prediction software for shellandtube heat exchanger networks supports a greater understanding of oil refinery operational performance. Heat exchanger network optimization is a subject of process design and the basis is done through steady state modeling and simulation. Hence, synthesis and optimization of hen is a main tool for improving heat recovery. However, before a systembased optimization can be carried out. It also shows the heat exchanger network design in a graphical form as the network grid diagram for visualization of the network configuration. Numerical 3d optimization of heat exchangers is a new and emerging field and the amoptimizationcoupled tools provided by ansys have only recently been introduced commercially.
Activated energy analysis asset optimization software. Heat exchanger networks hens are imperative for utility saving because they help recovering heat from hot streams to others leading to a reduction in utility requirement. Many studies and methodologies were proposed to make possible the energy recovery, minimizing the utilities consumption and the number of heat transfer equipment. Made by faculty at the university of colorado boulder department of chemical and. Through monitoring and reconciling plant data, smartpm provides accurate performance predictions through detailed heat exchanger modeling. Thus, the design of a heat exchanger is inevitably influenced by system requirements and should be based on system optimization rather than component optimization. Compare fabrication, installation, and operating costs of heat exchanger designs. The heuristics from pinch analysis and optimization from minlp and relaxation technique can. Heat exchanger software and engineering tools, shell and tube, condenser design, kettle reboiler, plate heat exchanger, double pipe heat exchanger. The heat exchanger network lsu minerals processing research.
Heat exchanger network synthesis provides engineers, designers, and industrial practitioners with a howto manual for understanding the methodology for conserving energy through process integration. From your stream data this tool can determine pinch temperature, generate composite curves, determine ideal minimum heating and cooling utility requirements, perform stream splitting, perform stream matching, and generate basic heat exchanger. The method is adapted to allow tradeoffs between energy, number of units, and capital. Heat exchanger network an overview sciencedirect topics. Heat exchanger network optimization using integrated specialized software from aspentech and gams technology. Aug 25, 2009 heat exchanger network hen synthesis has been a wellstudied subject over the past decades. Global optimization algorithm for heat exchanger networks. Aspen shell and tube exchanger designs using an automated optimization process, allowing for cost savings of up to 30% or more. Pinch analysis is a methodology for minimising energy consumption of chemical processes by calculating thermodynamically feasible energy targets or minimum energy consumption and achieving them by optimising heat recovery systems, energy supply methods and process operating conditions. The second program, called hint, is considerably more complex and thus more powerful, and can be used to. Up to eight design conditions can be investigated for fixed, utube, kettle and floating tubesheet style exchangers. Optimization of heat exchanger networks based on lagrange multiplier method with the entransy balance equation as constraint. However, its application in the field of heat transfer is less evident but is constantly progressing.
Heat exchanger fouling and cleaning vii, july 1 6, 2007, tomar, portugal fouling monitoring and cleaning optimisation in a heat exchanger network of a crude distillation unit andrea heins 1, ramon veiga 1, carlos ruiz 2, andres riera 2 1 argentinean technology center cta repsol ypf. Here, access is made available to 2 software tools for process integration that can be used to support the solution of many of the assignments in the course. Thermal design and optimization of heat exchangers. In this chapter, we would like to introduce topology optimization in the context of heat exchanger design to the general reader.
Reduction in energy consumption is an important task in process industry. Heat exchanger design with topology optimization intechopen. Apr 14, 2011 now, welltailored heat exchanger network software programs are available for optimizing a plants overall heat transfer operations. In a hen s problem there are hot streams that need to be cooled and cold streams that need to be heated. Using mer targets and pinch point determined in prior screencast, setup a heat exchanger network with utilities. Heat exchanger network hen synthesis has been a wellstudied subject over the past decades. A new approach was presented, which considers the limitations. Engineers can use this software to quickly obtain relative cost estimates, compare multiple configurations, and select the most costeffective configuration for the entire equipment life cycle. I believe this package will be a excellent modeling for heat exchanger if the following issues are solved, such as gui cannot be displayed normally and work properly in winxp. It integrates the networks of heat exchangers, boilers, condensers and furnaces for best energy utilization.
Shell and tube heat exchanger design software for thermal. Heat exchanger network optimization using differential. Asme uhx and tema heat exchanger software codeware. The mixed integer nonlinear programming minlp optimization model intakes the results of the fouling analysis and generates optimal cleaning decisions for each heat exchanger in the network, for a predefined time horizon. Once the heat exchanger network is complete, the status bar on the grid diagram tab will appear green. Exchanger optimizer design software for shellandtube and aircooled heat exchangers. Heat exchanger network optimization using integrated. Sep 26, 2012 using mer targets and pinch point determined in prior screencast, setup a heat exchanger network with utilities. Heat transfer from the heat sink consists of radiation and convection from both the intrafin passages and the unshielded surfaces of two outer fins. Users can leverage the network optimization software in npm to dig deeper into specific nodes for current and projected capacity based on historical utilization data. Use iheat to simulate your heat exchanger network and minimize operating costs. If you need asme uhx and tema mechanical design calculations, drawings and reports then the compress heat exchanger option is for you. For smaller plants, simple spreadsheetbased software programs can handle pinch analysis.
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