THERMO FLUID SCIENCE

 SHE Level 2 SCQF Credit Points 20.00 ECTS Credit Points 10.00 Module Code M2H321917 Module Leader Marek Maletka School School of Computing, Engineering and Built Environment Subject Civil Engineering and Environmental Management Trimester B (January start)

Pre-Requisite Knowledge

Programme entry requirements for BEng Building Services Engineering

Summary of Content

The aim of this module is to provide students with a good understanding of thermodynamics and heat transfer and to give an introduction to fluid mechanics. The emphasis in this module is directed more towards the thermal science subjects. This will provide the prior knowledge necessary to tackle the subject areas of heating systems, refrigeration and energy efficiency in buildings which are taught later in the host programme. The fluid mechanics in this module is prior knowledge for the 'Applied Fluid Mechanics' module taught in year 2.

Syllabus

Thermodynamics: Definitions of properties, system, heat and work. First law applied to closed systems. Reversible work. Control volume. Steady flow energy equation. Pure substances. Saturation conditions. Dryness fraction. Use of tables and charts. Interpolation. Introduction to entropy. Simple refrigeration and Rankine cycles. Specific heat. Ideal and perfect gases. Dalton's Law. Pyschrometry. The Second Law. Combustion: Fossil fuels- solid, liquid and gaseous. Calorific value. Combustion equations. Air-fuel ratio by volume and by mass. Stoichiometric ratio. Percentage excess air. Analysis of products of combustion. Fluid Mechanics: Basic concepts and properties of fluids. Fluid statics- pressure measurement. Fluid dynamics- laminar and turbulent flow, energy, continuity, energy losses, friction factors, loss factors and equivalent lengths for fittings in flow systems. Introduction to boundary layers. Introduction to dimensional analysis. Heat Transfer by Conduction: Steady state conduction. Fourier's Law. Thermal conductivity. Conduction through plain and composite walls, cylinders and spheres. . Heat transfer coefficient and overall heat transfer coefficient. Thermal resistance Heat Transfer by Convection: Introduction to forced and free convection. Convection heat transfer coefficient. Dimensionless groups of Nusselt, Prandtl, Reynold's and Grasshof Numbers. Various forms of the fundamental correlations in a variety of applications of both free and forced convection Heat Transfer by Radiation: Thermal spectrum and variation of radiant intensity with wavelength and temperature. Concept of blackbody and grey bodies. Stefan-Boltzmann and Kirchoff's Laws. Radiation shape factors for various configurations. Radiant heat exchange between blackbodies and within enclosures.

Learning Outcomes

The Engineering Benchmarks A1,A2,B1,B2,B3,B5,B7 and C1 as specified in the BEng Building Services Engineering Programme Specification Document apply to this module.On successful completion of this module the student should be able to:-- Calculate performance parameters for simple refrigeration and power cycles using thermodynamic tables and charts (B1,B5,C1)- Calculate work and heat terms and property changes for simple processes involving perfect gases (A1,A2,B1,B5,C1)- Use a psychrometric chart to obtain values of humidity and dew point and be able to verify results by using tables and by calculation (A1,A2)- Calculate air/fuel ratios and the proportions of products of combustion, by mass and by volume, for the combustion of the common fossil fuels (A1,A2)- Derive dimensionless groups for fluid flow and apply these with energy considerations to the analysis of pipe systems including fittings and turbomachinery (B1,B2,B3,B5,B7,C1)- Evaluate steady-state one-dimensional conductive heat transfer through a range of geometrical configurations (B1,B2,B5,C1)- Calculate the convective heat transfer coefficient and hence evalulate convective heat transfer from a variety of surfaces (B1,B2,B5,C1)- Calculate the thermal radiation energy exchange between various bodies and surfaces (B1,B2,B5,C1)

Teaching / Learning Strategy

All lectures will be supported by a full set of notes with a large number of worked examples and self-test questions. Students only feel they understand material of this nature when they can solve typical problems in the subject area. Appreciation of this will form the basis for the strategy to teaching this module. Class work will be supported with experimental work in the laboratories. Learning and teaching strategies will be developed and implemented, appropriate to students' needs, to enable all students to participate fully in the programme.

Indicative Reading

B Massey, Mechanics of Fluids, Stanley Thornes, 7th Edition, 1998, ISBN 0 7487 4043 0 (Also Solutions Manual.) J Robertson, C Crowe, Engineering Fluid Mechanics, Wiley, 6th Edition, 1996, ISBN 0 4711 4735 4 Y Cengel, M Boles, Thermodynamics, an Engineering Approach, McGraw Hill, 3rd Edition, 1997, ISBN 0 0711 5247 4 (Also Solutions Manual.) T Easop, A McConkey, Thermodynamics for Engineering Technologists, Longman, 1993, ISBN 0 5820 9193 4 J Douglas, J Gasiorek, J Swaffield, Fluid Mechanics, Longman, 3rd Edition, 1995, ISBN 0 5820 3408 5 Look D. C., Sauer H. J., Engineering Thermodynamics - S I Edition, Van Nostrand Reinhold (International), 1988 Horsley M., Engineering Thermodynamics, Chapman & Hall, 1993 Haberman W. L., John J. E. A., Engineering Thermodynamics with Heat Transfer, Second Edition, Allyn and Bacon, 1989 Schmidt F. W., Henderson R. E., Wogemuth C. H., Introduction to Thermal Sciences, Wiley, 1993 Janna W. S., Engineering Heat Transfer - S I Edition, Van Nostrand Reinhold (International), 1988 CIBSE Guides A, B and C

Transferrable Skills

The Engineering Benchmarks D1,D2,D5,D6 and D8 for transferable skills as specified in the BEng Building Services Engineering Programme Specification Document apply to this module. This module has a high technical content. The students will develop their techniques of problem solving and will be encouraged to identify similarities in methods and approach which will facilitate the solving of technical problems in general. (D1,D2,D5,D8)

Module Structure

Activity Total Hours
Lectures (PT) 36.00
Independent Learning (PT) 128.00
Tutorials (PT) 6.00
Assessment (PT) 18.00
Seminars (PT) 6.00
Practicals (PT) 6.00

Assessment Methods

Component Duration Weighting Threshold Description
Coursework 1 n/a 20.00 35% Take-home exercise
Exam (Exams Office) 2.00 60.00 35% Exams office exam
Coursework 2 n/a 20.00 35% Lab Report