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 network"”.
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Analytical Investigations in Heat Exchanger Network Synthesis
Although exact algorithms have been successful in tackling HENS problems of small size, heuristics are required for large-scale problems, and nothing is known about the quality of the solutions provided by heuristics. Analytical investigations are suggested to characterize the behavior of both …
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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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Simultaneous optimization of a chemical process, its heat exchanger network, and the utility system using a process simulator
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1994.
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Integrated design of chemical plants with energy conservation (the design of an energy efficient styrene plant)
… train. The second part considered the heat exchanger network associated with the distillation train and this has been taken in the context of overall process integration. "Pinch technology" was used as an aid for targeting the minimum hot and cold utilities required, designing the heat …
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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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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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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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Integrated renewable energy polygeneration networks: a multi-objective optimisation and game theoretic approach
… dissertation presents an integrated resource network model that includes a bioenergy supply chain and a polygeneration hub. The objective is to optimally allocate renewable fuel, and a fossil fuel backup, to the polygeneration hub while optimally distributing the utilities produced to supply …
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A physics-informed neural network modelling methodology to analyse integrated thermofluid systems
Physics-informed neural networks (PINNs) were developed to overcome the limitations of acquiring large training datasets that are commonly encountered when using purely data-driven machine learning methods. This study explores a PINN modelling methodology to analyse steady-state integrated …
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Capital cost targets for the optimum synthesis of mass exchange networks
Pinch Technology is very well developed for heat exchanger network synthesis (HENS). It is possible to predict, on thermodynamic grounds, the minimum energy, capital and total costs for a network. These targets are set before any design and can also be optimised at this stage. Special design …
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Online boiler convective heat exchanger monitoring: a comparison of soft sensing and data-driven approaches
… monitoring of a boiler’s convective pass heat exchanger network by respectively using a soft sensor and a data-driven method. The soft sensor approach is based on a one-dimensional thermofluid process model which takes measurements as inputs and calculates unmeasured variables as outputs. …
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Design and analysis of a natural draft direct dry cooling system for a supercritical carbon dioxide power cycle for CSP application
… work, such an NDDDCS with vertically arranged heat exchangers around the tower circumference is designed and evaluated for a supercritical carbon dioxide (sCO2) power cycle for a concentrated solar power application. The system is configured to house both the precooler (PC) and intercooler (IC) …
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A systematic heat recovery approach for designing integrated heating, cooling, and ventilation systems for greenhouses
La récupération de chaleur joue un rôle crucial dans l'amélioration de l'efficacité énergétique et la réduction des coûts opérationnels dans le secteur de l'énergie. Dans le contexte de la gestion de l'énergie des serres, les mesures de récupération de chaleur offrent un potentiel significatif pour …
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Unified Total Site Heat Integration: Targeting, Optimisation and Network Design
… in New Zealand use 214.3 PJ of process heat, of which approximately 65 % is fossil fuels. Despite increasing energy demands, depleting fossil fuel resources, and pressure to reduce Greenhouse Gas emissions, low grade heat in large-scale processing sites is still not fully utilised. This …