Module Code - Title:
ME4516
-
THERMODYNAMICS 2
Year Last Offered:
2025/6
Hours Per Week:
Grading Type:
N
Prerequisite Modules:
ME4523
Rationale and Purpose of the Module:
To provide an understanding of the mode of operation for actual heat pump and refrigeration systems and to analyse their performance characteristics.
To provide an understanding of the mode of operation of Rankine, superheat, reheat and regenerative steam power cycles and to analyse their performance characteristics.
To analyse the power output characteristics of pure impulse turbines and impulse-reaction axial flow turbines. To relate the performance and characteristics of the latter to steam enthalpy change in multi-stage operation.
To analyse the power input requirements, volumetric efficiency and heat loss characteristics for single stage and multi-stage compressors.
To provide an understanding of the mode of operation for actual 2-stroke and 4-stroke spark ignition and compression ignition engines and to analyse their performance characteristics with reference to mean effective pressure, indicated power, brake power, specific fuel consumption, volumetric efficiency, thermal
Syllabus:
Refrigeration & Heat Pump Cycles, Vapour Power Cycles, Internal Combustion engines, Compressors, Seat Turbines.
Learning Outcomes:
Cognitive (Knowledge, Understanding, Application, Analysis, Evaluation, Synthesis)
- Using appropriate refrigerant charts and tables of properties, analyse refrigeration and heat pump cycles to estimate refrigeration effect, compressor work, heat rejected and coefficient of performance for a range of systems including 2-stage industrial refrigeration systems.
- Using both tables of thermodynamic properties the entropy-enthalpy chart for steam analyse the efficiencies of Rankine, superheat, reheat and regenerative cycles, and specify salient state points and performance parameters.
- Recognise the mode of operation of real reciprocating Internal Combustion engines as opposed to Otto, diesel and dual air standard cycles, and determine performance characteristics for reciprocating internal combustion engines.
- Given preferred delivery conditions specify power requirements and cylinder dimensions and efficiencies for single- and multi- stage reciprocating compressors; and derive intermediate pressures and energy balance for multi-stage compressors.
- Describe the fundamental basis for mechanical power generation in impulse and impulse-reaction turbines, and given input and output velocity and geometric criteria generate velocity triangles and use these and the entropy-enthalpy chart for steam to determine power output, efficiencies and reheat factor for multi-stage impulse-reaction turbines.
Affective (Attitudes and Values)
Improve understanding of thermodynamics as it applies to practical engineering, especially in the power industry.
Psychomotor (Physical Skills)
N/A
How the Module will be Taught and what will be the Learning Experiences of the Students:
The module is taught predominantly with lectures, backed up with Active learning tutorials, where students work through sample problems to develop their Knowledge of thermodynamic applications.
To promote earlier engagement with content, to develop this Knowledge, in-class assessments may be used.
The aim of the Active learning tutorials is to stimulate the student to be Proactive, and work through the sample problems. The laboratory experiment is undertaken in small groups (6-8) to enable them to develop their skills.
As Energy use is a very important topic, heavily impacting on climate change, they are encouraged to be aware of the importance of developing more efficient thermodynamics systems, as their Responsibility as Professional engineers to society and the environment. Typically, a class field trip to Moneypoint coal fired power station may be taken, to emphasise the importance of cycle efficiency and the scale of the systems.
The written lab report develops their technical writing (Articulate graduate attribute).
Research Findings Incorporated in to the Syllabus (If Relevant):
Prime Texts:
Rogers, G.F.C. and Mayhew, Y.R. (1995)
Thermodynamic and Transport Properties of Fluids 5th Ed.
, Blackwell Publishing. ISBN 978-06311-9703-4, Shelved at 536.7/ROG
Cengel, Y., and Boles, M., (2018)
Thermodynamics: An Engineering Approach
, McGrawHill, 9ed. ISBN 978-05820-9193-1, Shelved at 621.4021/EAS
Cengel, Y., and Boles, M., (2011)
Thermodynamics: An Engineering Approach
, McGrawHill, 7ed. ISBN 9783529325; Shelved at 621.4021 CEN
Eastop, T. D. and McConkey, A. (1993)
Applied Thermodynamics
, Longman Scientific and Technical
Other Relevant Texts:
Rogers, G.F.C. and Mayhew, Y.R (1996)
Engineering Thermodynamics: Work and Heat Transfer 4th Edition
, Pearson Education
Programme(s) in which this Module is Offered:
BEMEENUFA - MECHANICAL ENGINEERING
Semester(s) Module is Offered:
Spring
Module Leader:
abir.sakly@ul.ie