Dr. Ahmed's Teaching

List of courses taught

  • Process Equipment Design (Unit Operations)
  • Process Dynamics and Control

  • Process Simulation
  • Safety and Risk Engineering
  • Advanced Reliabilty Modeling

Process Equipment Design (Unit Operations)

Process equipment design introduces the principles of unit operations, grouped into four sections: fluid mechanics, heat transfer, mass transfer and equilibrium stages, and operations involving particulate solids. Design and operation fundamentals of unit operations equipment: size reduction, filtration, evaporation, drying, crystallization, and humidification.

Course handouts and links to recorded leactures are listed below: 

Please find the course outline here.

Course contents (mindmap)

Lectures: Course administaration (13:45)

                  Introduction to the course (9:00)

Topic 1: Properties of solid particles

1.1 Particle size and shape: Handout Presentation 

Lectures: Size and shape of solid particles (16:36) 

                  The concept and definition of sphericity (6:26)

                  Sphericity of cubic particles (5:23)

                  Sphericity of cylindrical particles (4:43)

                  Surface area of bulk particles (8:02)

                  Mean diameter of bulk particles (18:40)

1.2 Size measurement: Handout Presentation

Lectures: Techniques for particle size measurement (4:10)

                  Screen analysis (sieving) (13:36)

1.3 Size reduction equipment: Handout Presentation

Lectures: Introduction to size reduction (4:59)

                 Mechanisms for size reduction (5:54)

                 Equipment for size reduction (7:26)

                 Ball mill: structure and operating principles (6:57)

                 Rittinger's law, Kick's law, Bond's law and Work Index (17:18)

Topic 2: Filtration: Handout  Presentation

Lectures:      Filtrations basics, plate and frame filter press, rotary vacuum filter (21:00)

                       Constant pressure filtration - Mathematical formulation (23:02)

Topic 3: Fluidization: Handout  Presentation

Lectures:     Fluidization - Basic concepts (22:36) 

                      Forces on a particle in fluid and terminal settling velocity (14:03)

                      Hydraulic radius and its expression for a fluidized bed (5:36)

                      Governing equations for fluidization (22:13)

                      Minimum fluidization velocity and range of operation of a fluidized bed (9:41)    

Topic 4: Heat Exchangers: Handout  Presentation LMTD Shell & Tube HX Design Workbook

Lectures: Heat exchangers: Basic concepts and types (15:43)

                  Shell and tube heat exchanger: Structural details (15:12) 

                  Shell and tube heat exchanger: Design procedure (13:09)

                  Estimation of tube and shell side heat transfer coefficients (6:53)

                  Overall heat ransfer coefficients (11:30)                  

                  Log mean temperature difference (LMTD) (33:46)

                  Allocation of fluids for a shell and tube heat exchanger (4:28)

                 

Topic 5: Mixing and agitation: Handout  Presentation

Lectures: Basic concepts on mixing and agitation (12:29)

                  Flow number and power number (12:35)

                  Power consumption in mixing and agitation (9:07)

                  Example problem on power consumption (4:20)

                  Mixing time (1:56)

                  Example problem on mixing time (4:22)

                  Scale-up procedure for mixing equipment (7:53)

                  Example problem: Scale-up of mising equipment (5:46)

Topic 6: Drying: Handout  Presentation

Lectures: Fundamentals of dring (29:02)

                  Drying curve (5:32)

                  Drying time (6:20)

                  Drying problems (13:41)

                  

Topic 7: Evaporaors: Handout  Presentation

Lectures: Evaporator basics and design factors (9:42)

                  Types of evaporators (5:59)

                  Single and multiple effect evaporators (8:12)

                 Design calculations for evaporators

                 Workbooks

                 Single Effect Evaporator - Introduction (1:44)                

                Multiple Effect Evaporators - Introduction (3:18)

                Falling film evaporator - working principle (2:06)

                Forced Circulation Evaporator Working Principle (1:06) 

                

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