Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"heat exchanger networks"”.
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Automated retrofit of heat exchanger networks
… plant, a significant amount of process heat is generated using fossil fuels, contributing to New Zealand’s overall greenhouse gas emissions. While New Zealand’s renewable energy sources present potential alternatives to fossil fuels, reducing the process heat demand of industrial …
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On the operability of heat exchanger networks
… report presents a study of the operability of heat exchanger networks (HENs).The integration of heat exchange systems such as HENs typically results in significant steady-state cost savings which is the motivation for their implementation. However, such integration may lead to problems in the …
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Operability studies in heat exchanger networks : analysis, control and synthesis
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1988.
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A recursive design method for heat exchanger networks / by Yikai Ren.
A novel and reliable method for heat exchanger network synthesis is proposed.The prime objective has been the elimination or reduction of drawbacks inherent in both evolutionary methods and mathematical programming methods while retaining the adevantages of both methods.
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Design of consistently near-optimal heat exchanger networks by a two-stage optimisation approach
Research in the field of Heat Exchanger Network Synthesis has been active as far back as 1965. Although the problem statement has remained essentially unchanged since then, numerous techniques have been developed to solve the heat exchange problem. Despite significant progress achieved over the …
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A spreadsheet-based tool for synthesis of heat and mass exchange networks
… for applying Pinch Technology approach to both Heat Exchanger Networks Synthesis (HENS) and Mass Exchanger Networks Synthesis (MENS) for use by ordinary engineers. Pinch Technology is a structure independent approach.
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Application of mixed-integer programming in chemical engineering
… the problem of scheduling cleaning actions for heat exchanger networks subject to fouling. The Travelling Salesman Problem finds a plethora of applications in many scientific disciplines, Chemical Engineering included. None of the mathematical programming formulations proposed for solving the …
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Supply and target-based superstructure synthesis of heat and mass exchange networks
… new methods for superstructure synthesis of heat exchanger networks (HENs) and mass exchanger networks (MENs) that involve the use of key parameters in HEN and MEN to define superstructure intervals. The key parameters are the stream supply and target temperatures/compositions. The …
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ΟΛΟΚΛΗΡΩΜΕΝΟΣ ΣΧΕΔΙΑΣΜΟΣ ΔΙΚΤΥΩΝ ΕΝΑΛΛΑΓΗΣ ΘΕΡΜΟΤΗΤΑΣ
THE OPTIMUM HEAT EXCHANGERS NETWORKING IS THE MAIN WAY TO INTEGRATE INDUSTRIAL HEAT LOADS. THE "PINCH POINT METHOD" (B. LINNHOFF 1978-1982) APPROACHES THE PROBLEM USING THERMODYNAMICS AND THEN IT USES THE EXPERIENCE OF THE DESIGN ENGINEER TO CHOOSE AND CALIBRATE THE FINAL NETWORK. THE NEW ALGORITHM …
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Studies in process integration of energy and environmental systems
… to synthesize energy-optimum and minimum-cost, heat-exchanger networks (HENs), and shows how to implement them using three software tools. Chapters 3 and 4 demonstrate how to optimize the energy recovery in petroleum refinery distillation systems via process integration. Chapter 3 presents an …
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Studies on process synthesis and process integration
… methods and (2) process integration through heat-exchanger networks and energy-saving power and refrigeration systems. The shortcut methods for conceptual process synthesis presented in Chapter 2, utilize Residue Curve Maps in ternary diagrams and are illustrated with examples of processes …
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Open-Source tools for practical heat integration and utility system evaluation
… of the most effective strategies for reducing heat demand is optimising the design of heat exchanger networks (HENs). While automated synthesis methods like mathematical programming have long promised optimal designs, their industrial adoption remains limited. Key barriers include expensive …
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Optimisation of heat exchanger network maintenance scheduling problems
… the challenges that arise from the scheduling of heat exchanger network maintenance problems which undergo fouling and run continuously over time. The original contributions of the current research consist of the development of novel optimisation methodologies for the scheduling of cleaning …
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ΑΝΑΠΤΥΞΗ ΚΡΙΤΗΡΙΩΝ ΚΑΙ ΤΕΧΝΙΚΩΝ ΓΙΑ ΤΗΝ ΕΝΕΡΓΕΙΑΚΗ ΑΝΑΔΙΑΡΘΡΩΣΗ ΧΗΜΙΚΩΝ ΒΙΟΜΗΧΑΝΙΩΝ
THE OPTIMAL SYNTHESIS OF HEAT EXCHANGES NETWORKS IS THE MOST EFFICIENT METHODOLOGY FOR ENERGY CONSERVATION AND RECONSTRUCTION FOR ENERGY SAVING, IN GENERAL, IN THE CHEMICAL INDUSTRY. THE SUBJECT IS MAINLY TACKLED BY MEANS OF THE DEVELOPMENT OF CERTAIN CRITERIA AND HEURISTICS BASED ON …