Undergraduate Course: Plant Engineering 2 (CHEE08006)
|School||School of Engineering
||College||College of Science and Engineering
|Credit level (Normal year taken)||SCQF Level 8 (Year 2 Undergraduate)
||Availability||Available to all students
|Summary||This course builds on SCEE08003 Fluid Mechanics 2. It is designed to provide a practical insight into the design of pipework systems, reinforcing theoretical study of fluid mechanics and including the effect of pumps and control valves. It introduces the concept of simple control loops, laying the foundations for future study of control and providing a foundation for compressible flow pressure drop calculations. Compressible flow in nozzles is treated, including choked flow and normal shocks. A laboratory programme supplements the lecture course.
This course comprises 20 lectures and 10 tutorials assessed by written examination and two 3 hour laboratory sessions assessed by written reports.
Lect 1: Objectives and definitions of control loops: controlled, disturbance and manipulated variables, setpoint,
Lect 2: regulator and servo responses. Feedback and feedforward control.
Lect 3: Sensors and final control elements. Examples of simple control loops.
Lect 4: Control actions: on-off, proportional, PI and PID control.
Lect 5: Cascade control loops.
Lect 6: Revision of the steady flow energy equation. Evaluation of the friction factor.
Lect 7: Types of pipe flow calculations. Frictional losses in pipes and fittings. Example calculations.
Lect 8: The operation of positive displacement pumps. The operation of centrifugal pumps, including the conditions at suction and delivery. NPSH, pump characteristics. Power requirements.
Lect 9: Pump selection. The operating point. Example calculations.
Lect 10: A description of the most common valve types including applications in which they may be appropriately used. Control valves. Design specifications. Valve characteristics.
Lect 11: Matching valves to systems.
Lect 12: Example of valve choice
Lect 13: Revision of compression of gases. Comparison of compressors and liquid pumps.
Lect 14: Multistage compression. Efficiencies. Examples.
Lect 15: Steady flow energy equation for flow of compressible fluids in uniform pipes.
Lect 16: Concept of choked flow.
Lect 17,18: Speed of sound. Description and calculation of flow rate and pressure drop correlations for compressible fluids in nozzles.
Lect 19,20: Normal shocks. Examples of compressible flow in nozzles.
1. Simple Control Loops
2. Simple Processes with control
3. Pipework systems without pumps
4. Pipework systems with pumps
5. Pipework systems with pump and control valve
7. Compressible flow
Students complete 2 of the following:
1. Characteristics of a Diaphragm Compressor/Vacuum Pump
2. Process Control: Regulating the Level in a Process Vessel
3. Characteristics of a Centrifugal Blower
4. Pressure Relief Devices
5. Air Operated Fluid Control Valve: Principles of Construction and Operating Characteristics
6. Design of an Orifice Flowmeter
7. Pump Characteristics
Entry Requirements (not applicable to Visiting Students)
||Co-requisites|| Students MUST also take:
Fluid Mechanics 2 (SCEE08003)
||Other requirements|| None
Information for Visiting Students
|High Demand Course?
Course Delivery Information
|Academic year 2019/20, Available to all students (SV1)
|Learning and Teaching activities (Further Info)
Lecture Hours 20,
Seminar/Tutorial Hours 9,
Supervised Practical/Workshop/Studio Hours 6,
Formative Assessment Hours 1,
Summative Assessment Hours 3.5,
Programme Level Learning and Teaching Hours 2,
Directed Learning and Independent Learning Hours
|Assessment (Further Info)
|Additional Information (Assessment)
||Two hour degree exam (80%) and two equally weighted laboratory reports (20%).
The written paper, of 2 hours duration, comprises 3 compulsory questions. Whilst the questions will usually cover control, pipework systems and compressible flow in equal measure, it should be noted that all aspects of the course are examinable, that questions integrating different aspects of the course can be set and that not all areas of the course need necessarily be examined in any one diet of exams.
||Feedback will be provided on both of the laboratory reports on a pro-forma feedback sheet and orally within the tutorials on completed attempts at the questions set. Class-wide feedback will also be provided on the final examination.
||Hours & Minutes
|Main Exam Diet S2 (April/May)||2:00|
|Resit Exam Diet (August)||2:00|
On completion of this course, the student will be able to:
- K&U: Describe the physical principles involved in the operation of pumps and control valves; Use the correct terminology in description of control loops and suggest practical control loops for simple processes; Describe the different types of control action and their response to a system disturbance; Describe the range of flow regimes possible for flows of compressible fluids through nozzles.
- CS: Describe and contrast the behaviour of pump types commonly found in industrial use; Discuss the changes that occur in a normal shock
- Practice: Select an appropriate centrifugal pump for Newtonian fluid flow in a given pipe-work system on the basis of a pump characteristic; Select an appropriate control valve for a given duty; Design a multi-stage compressor, taking into account the compressor efficiency; Calculate pressure drops and maximum flow rates for compressible fluids in uniform pipes; Calculate flow rates of compressible fluids through nozzles for a given pressure drop, whether the flow is choked or not.
- Practice (lab): Become familiar with construction and installation of commonly-used items of plant hardware; Gain 'hands-on' experience of assembly/dismantling procedures required in plant maintenance, and simple test procedures; Develop observational skills, especially with regard to wear, corrosion or other damage to plant.
|1. Fox, McDonald, Pritchard, An Introduction to Fluid Mechanics, Wiley, 6th edition, 2004. (Background reading)|
2. Holland F.A. and Bragg R., Fluid Flow for Chemical Engineers, Edward Arnold 2nd ed. 1995. (Background reading)
3. Chemical Engineering (Volume 1), J M Coulson and J F Richardson, Pergamon Press. (Recommended reading)
4. For the section on control the following material will be useful:
|Graduate Attributes and Skills
||Numeracy, observational, analytical, teamwork and written communication skills in addition to practical chemical engineering skills
|Additional Class Delivery Information
||2 three-hour laboratory sessions at times to be arranged and weekly one hour tutorial sessions
|Keywords||Process Engineering,Applications,Control,Pipework Systems,Compressible Flow,Equipment design
|Course organiser||Dr Michael Chen
|Course secretary||Mr Mark Owenson
Tel: (0131 6)50 5533