Introduction-Thermodynamics-Handout, Exercises of Thermodynamics

Download Introduction-Thermodynamics-Handout and more Exercises Thermodynamics in PDF only on Docsity! Chapter 1: Introduction Unit aim This section outlines briefly the information relating to thermodynamics given on the ThermoFluids 209 web site, which can be found at http://www.mech.uwa.edu.au/courses/TF209/ . In the Thermodynamics part of this unit you will be introduced to thermodynamics, its basic concepts, and its application. It contains theoretical, practical, and empirical material. Some may be familiar from other sources (e.g. physics), but the approach may be different. You will relearn some old concepts, learn new concepts, encounter new terminology, and develop problem solving skills which will help you in all engineering. Do not assume you understand even fairly basic concepts. Be prepared to re-examine your understanding of them. Experience has shown that unrecognised misunderstandings can cause you immense frustration! Learning Outcomes This unit introduces you to the basics of fluid mechanics, and exposes you to a range of technological issues associated with thermodynamic devices and systems, and some of the wider issues associated with the development of such devices and the general use of energy. Generic Attributes: The unit is designed to form and reinforce the following generic attributes: An ability to apply knowledge of basic science and engineering fundamentals; An ability to communicate effectively, not only with engineers but also with the community at large; An ability to undertake problem identification, formulation and solution; An understanding of the social, cultural, global and environmental responsibilities of the professional engineer, and the need for sustainable development; An expectation of the need to undertake lifelong learning, and capacity to do so; An ability to adapt acquired knowledge to new situations; An ability to think and reason logically and creatively; An ability to utilise and synthesize knowledge from different disciplines. Knowledge: The specific knowledge outcomes of the unit are related to the following topics: Compressors, reciprocating and rotary: basic principles, analysis of performance; Spark Ignition and Compression Ignition engines: basic principles, analysis of performance, enhancement methods such as supercharging, and practical constraints on performance; Liquid-vapour systems: basic principles and methods of analysis; Refrigeration systems: basic principles, analysis of performance and features of practical systems; Turbines: basic principles, common arrangements and analysis of performance; Steam power systems: basic principles, analysis of performance and enhancement methods; Thermodynamic laws and their corollaries; Properties and their relationships; Analysis of open and closed thermodynamic systems; Reversible and irreversible thermodynamic cycles; Fundamentals of heat transfer by conduction; Engineering techniques and problem solving approaches for thermodynamic systems; Introduction to social and environmental issues affecting energy conversion devices. Unit content and resources The thermodynamics component of this unit comprises 2 lectures and 1 tutorial class per week. It also has four laboratory experiments, a number of computer-based assignments, and some other assignment activities, including a site visit. A significant challenge to students of thermodynamics worldwide is the very large number of concepts to be grasped before they can gain a proper perspective on thermodynamic devices and processes. Innovative computer-based material to assist students to overcome this challenge is being developed in-house, to which you will be given access as it becomes available - on the understanding that the software is not mature, and is likely to contain flaws. Your patience and constructive suggestions will be greatly appreciated! docsity.com This workbook covers the thermodynamics component of the unit, and is essential for this unit. Further notes may be handed out at lectures if required. Handouts from lectures will generally be made available for viewing, and in "pdf" format for downloading, at the unit's web site. The recommended course text book is "Fundamentals of Thermal-Fluid Sciences" by Y.A.Çengel and R.H.Turner, 2nd Ed., published by McGraw Hill. The text with steam tables, "Thermodynamic Tables in SI Units", by R.W. Haywood, published by Cambridge University Press, is essential and you will need it to take into the final examination. Lectures Thermodynamics lectures cover theoretical thermodynamic concepts and their corresponding practical applications, and some of the engineering challenges which arise. All material is examinable, including any site visit. You will need to take additional notes in lectures to supplement or complete the workbook and other handouts. Thermodynamics course material will generally be handled under the heading of various types of devices (eg. engines, compressors, turbines) and the necessary theory (eg. Thermodynamic Laws and their corollaries) will be introduced as needed. The main topics for the unit are given below (see "Main Topic Headings"). Computer Based Learning (CBL) Structured tutorial work with assessed assignments, and some optional instructional material will be accessible on the web. Some of the assignments will be required very early in the semester as they are designed to prepare your way of thinking, and help ensure you have a good grasp of the fundamental concepts. Tutorial tasks on the web, including assessed assignments, will be set (see "Assignments" below). The availability of these and other web material for the course will be announced in lectures. Laboratories For Thermodynamics, you will get four opportunities to experience hands-on laboratory work: 1. Dismantling, re-assembling and running a small 4-stroke petrol engine (approx 3 hours); 2. Test on a single-stage air compressor (approx 2 hours); 3. Performance comparison between a modern (Ford) engine and an older (Holden) engine (approx 2 hours); 4. Energy balance on steam power system (approx 2 hours). All Thermodynamics laboratory classes will be held in the Thermodynamics Laboratory, Room G50K (a section of room G50 near, but not quite at, the Fairway end). You must comply with laboratory safety requirements (eg. enclosed shoes) at all times during all laboratory classes. Assignments Assignments will be issued from time to time in one of two formats: i. compulsory computer-based assignments will be set (with firm deadlines stated), and ii. at some lectures, assignment sheets will be issued (you must bring completed assignment work to the following week's lecture for possible collection and assessment). It is your responsibility to ensure you are aware of all assignments and deadlines. Tutorials and Site Visit You have one Tutorial per week, though you may attend more if you wish. Last year’s exam questions may be explained during some sessions, and where possible time is available to work on assignments and obtain help as needed. A Site Visit will be arranged (unless external conditions prevent it), and attendance will be a required part of the unit. Generally, visits to a particular site will be scheduled over several days to maintain reasonable group sizes. While timetable clashes are avoided if possible, students will be expected to ensure they attend one of the visits. A brief report will be required and will be assessed as an assignment. Email communication Good communication can minimise frustration and make life easier all round. Please ensure your email address is functioning properly for this unit, and check your email regularly. If you are unable to receive email messages for any reason, please inform the lecturer so other arrangements can be made. docsity.com