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Thermal design and optimization

03QGYND

A.A. 2019/20

Course Language

Inglese

Course degree

Master of science-level of the Bologna process in Energy And Nuclear Engineering - Torino

Borrow

01QGYND 04QGYND

Course structure
Teaching Hours
Lezioni 56
Esercitazioni in aula 38
Esercitazioni in laboratorio 26
Teachers
Teacher Status SSD h.Les h.Ex h.Lab h.Tut Years teaching
Leone Pierluigi   Professore Ordinario ING-IND/10 26 9 12 0 7
Teaching assistant
Espandi

Context
SSD CFU Activities Area context
ING-IND/10 12 B - Caratterizzanti Ingegneria energetica e nucleare
2019/20
This course focuses in the thermal design and optimization of energy systems and components with the twofold objective to improve efficiency and reduce the investment and operating costs. The course is oriented towards applications and it is based on lectures, practical exercises developed in class and practices developed at the computer. In lessons the techniques for modeling energy components and plants are discussed, together with advanced methods for their analysis, such as pinch analysis, exergy analysis and thermoeconomic analysis. At the end of the course, the student will be able to analyse thermal systems and components as well as to identify the opportunities for improving energy and economic performances acting on the variables referred to geometry, design and configuration, and optimize components and systems. During practices in class, some applications will be developed in order to allow the student to become familiar with the various techniques. A relevant part of the course is devoted to project team working using commercial software for the analysis of thermal systems and components.
This course focuses in the thermal design and optimization of energy systems and components with the twofold objective to improve efficiency and reduce cost of products. At the end of the course, the student will be able to analyse thermal systems and components by using advanced engineering thermodynamic methods and tools. He will be able to assess the energy performance of systems as well as to perform simple economic analysis and investment evaluation. Students will be able to identify the process of cost formation of products in a thermal system as well as to locate the source and nature of losses throughout a generic conversion process. Finally, dealing with thermal design of components, students will be able to optimize shapes and geometry by applying advanced thermodynamic methods. The course is composed by lessons, where the theoretical aspects are analysed and various applications to relevant systems are presented as well. A relevant part of the course is devoted to project team working using commercial software for the analysis of thermal systems and components.
At the end of this course, students are expected to know the techniques for design, analysis and optimization of thermal systems and their components from the energy and economic point of view: exergy and thermoeconomic analysis, estimation of cost of components and plants, fundamental of financial mathematics and discounted cash flow analysis, process integration and pinch analysis, single and multi-objective optimization, design improvement, entropy generation minimization. Acquire the ability to correctly apply these methodologies to thermal systems and their components.
At the end of this course, students are expected to know the techniques for design, analysis and optimization of thermal systems and their components from the energy and economic point of view: thermoeconomic analysis, estimation of cost of components and plants, fundamental of financial mathematics and discounted cash flow analysis, single and multi-objective optimization, design improvement, thermal diagnosis, entropy generation minimization.
Engineering thermodynamics and heat transfer.
Engineering thermodynamics and heat transfer.
Introduction to the course. Brief analysis of the energy scenarios and the role of research in energy systems, with particular emphasis on the application to industrial plants. Role of the process integration, optimization and design improvement of energy conversion systems. Characteristics of an optimization problem. Optimization techniques: direct and indirect optimization, heuristic optimization (9 h lesson). Simulation of energy components: continuum mechanics; overview of continuity, momentum and energy equations; meaning of the terms in the equations; boundary and initial conditions. Optimal design of components. Entropy generation minimization. Application to an energy conversion component (12 h lesson + 9 h lab). Exergy analysis. Development of the exergy balance equation. The reference environment. Calculation of physical and chemical exergy. Uses of exergy analysis for the design improvement of energy plants. Applications of the exergy analysis. Exergy cost. Exergo-economic cost balance. Evaluation of the total investment cost of a thermal plant. Cost functions of components. Fundamentals of financial mathematics. Discounted cash flow analysis. Current and constant currency assumptions. Investment assessment of energy systems: applications to renewable power plants. Process of cost formation of products in a thermal plant. Design improvement methodology. Possible interventions for increasing the rational utilization of the resources. Detection of the main components to be optimized in design and/or operation. (30 h lesson + 12 h practice + 12 h lab). Pinch analysis method. Analysis of productive processes and determination of productive constraints. Definition of the main streams and graphical construction of the composite curves. Definition of the minimum temperature difference; thermodynamic and economic implications. Graphical calculation of the pinch point. Analytical calculation of the pinch point. Representation of a heat exchanger network. Rules for the design of the heat exchanger network corresponding to the minimum energy needs. Application of the pinch analysis to production plants and energy conversion systems (10 h lesson + 5 h practice).
Energy and exergy analysis of thermal systems. Exergy cost. Exrgo-economic cost balance. External assessment. Evaluation of the total investment cost of a thermal plant. Cost functions of components. Total cost of a systems. Fundamentals of financial mathematics. Discounted cash flow analysis. Current and constant currency assumptions. Investment assessment of energy systems: applications to renewable power plants. Process of cost formation of products in a thermal plant. Design improvement methodology. Possible interventions for increasing the rational utilization of the resources. Detection of the main components to be optimized in design and/or operation. Optimization techniques: direct and indirect methods. Genetic algorithms. Multi-objective optimization. The Pareto front. Techniques for the system synthesis: optimization of the system configuration. Synthesis and optimization of a district heating system. Process integration in the industry. Minimum consumption of energy and water. Optimal design of components. Entropy generation minimization (EGM). Applications to the optimal geometry of devices.
The course in organized with theoretical lessons, practices in class and practices in lab. During lessons the techniques for modeling energy components and plants are discussed, together with advanced methods for their analysis, such as pinch analysis, exergy analysis and thermoeconomic analysis. During practices in class, some applications will be developed in order to allow the student to become familiar with the various techniques. A relevant part of the course is devoted to project team working using commercial software for the analysis of thermal systems and components. Specific modeling tools for the solution of applications will be introduced during lab activities scheduled in the framework of the course.
The theoretical topics discussed during the lectures will be deepen by developing selected applications of thermal systems (e.g. energy storage, water dissalation, fuel synthesis). Fossil-based advanced power systems will be investigated as well as renewable systems including solar and biomass energy utilization. Specific modeling tools for the solution of applications will be introduced during lab activities scheduled in the framework of the course.
Teaching material provided by the teacher. Textbook: Verda, Guelpa. Metodi termodinamici per l’uso efficiente delle risorse energetiche. Esculapio.
The students will be provided with material including topics discussed during the lectures and practices.
Modalità di esame: Prova scritta (in aula); Progetto di gruppo;
Exam: written test; group project; The final mark is composed by the written test for 24/30 and for 6/30 by the group project. The written test is composed by two parts: - two exercizes, one on exergy and thermoeconomic analysis and one on pinch analysis. This part aims at evaluating the ability of the student to apply the analysis techniques presented during lessons and practices in class. – some questions focused on the theoretical aspects and the analysis techniques presented during the course. This part aims at evaluating specific knowledge acquired during the course and not evaluable through numerical exercizes. The two exercizes have a value of about 9/24 each, while the questions overall contribute for 6/24 to the final mark. The written exam lasts 3 hours.
Exam: Written test; Group project;
The exam will be held in written form and it will deal with the topics discussed during the lectures and practices. It consists of about 8 open questions, which are conceived in order to verify: 1) the specific knowledge of the student on the topics discussed during lessons and practices 2) the ability of the student to apply the main methodologies (economic analysis, thermoeconomic analysis, optimization, design improvement) to components or plants 3) the active participation of the student to the projects. The written test lasts 2 hours. The maximum mark is 24/30. Students cannot use didactical material during the test. Moreover, the students are asked to prepare and discuss 2 reports dealing with the thermal design and optimization of selected energy systems and components. These reports have the goal to allow the students to develop deeper knowledge of the applicative aspects of the various methodologies. The evaluation of these reports aims at verifying that the student has acquired the ability to discuss from a technical viewpoint the energy, economic and thermoeconomic analysis of systems, as well as the optimization and design improvement at a component level. The maximum mark for the reports is 8/30.


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