School of Mechanical Engineering – Derrick Campus, Samabula

Equipment Name Capability and Uses
Gay-Lussac’s Law Apparatus

•Demonstrates change of pressure of a fixed     volume of gas during heating
• Proving Ga-Lussac’s law by experiment
• The principle of a vapor pressure thermometer

 Thermal Conductivity Experiment  (guarded hot plate apparatus) Determination of emissivity
-Verification of the Stefan-Boltzmann constant.
 Linear Heat Conduction Experiment • Demonstration and calculations of linear heat
conduction
• Calculation of the thermal conductivity (k value)
• Demonstration of the effectiveness of thermal paste
• Demonstration and calculations of thermal resistances
(R value) in series
• Demonstration of ‘thermal lag’
 

Radial Heat Conduction Experiment

• Demonstration and calculations of radial heat
conduction
• Calculation of the thermal conductivity (k value)
 Surface Heat Transfer Experiment To demonstrate how heat transfers from the surface of a solid bar or rod
• To demonstrate the temperatures on, and heat flow through the solid bar to its surrounding
 Conductivity of Liquids & Gases Experiment • Calibration of the unit using air as the known medium
• Finding the thermal conductivity (k) of various liquids and gasses and comparing them to typical published values
 VDAS-Bench Mounted Version (Accessory) Lab Accessories
 Bench-top Heat Exchanger Service Module Provide connection and software to run experiment
 Concentric Tube Heat Exchanger • Demonstration of heat transfer from one fluid to another through a solid wall
• Energy balance and efficiency calculations
• Demonstration of parallel-flow and counter-flow operation of heat exchangers
• Measurement of the heat transfer coefficient, and the effect of fluid flow rates and the driving force (temperature differential) upon it
• Introduction to the logarithmic mean temperature difference in heat exchangers
• Comparison of different types of heat exchanger in terms of performance, size and relative cost (only if two or more optional heat exchangers have been bought)
 Plate Heat Exchanger • Demonstration of heat transfer from one fluid to another through a solid wall
• Energy balance and efficiency calculations
• Demonstration of parallel-flow and counter-flow operation of heat exchangers
• Measurement of the heat transfer coefficient, and the effect of fluid flow rates and the driving force
(temperature differential) upon it
• Introduction to the logarithmic mean temperature
difference in heat exchangers
• Comparison of different types of heat exchanger in
terms of performance, size and relative cost (only if two
or more optional heat exchangers have been bought)
 Shell & Tube Heat Exchanger • Demonstration of heat transfer from one fluid to another through a solid wall.
• Energy balance and efficiency calculations.
• Demonstration of parallel-flow and counter-flow operation of heat exchangers.
• Measurement of the heat transfer coefficient, and the effect of fluid flow rates and the driving force (temperature differential) upon it.
• Introduction to the logarithmic mean temperature difference in heat exchangers.
• Comparison of different types of heat exchanger in terms of performance, size and relative cost (only if two
 Jacketed Vessel and Coil & Stirrer • Demonstration of heat transfer from one fluid to another through a solid wall.
• Introduction to the logarithmic mean temperature difference in heat exchangers.
• Comparison of different types of heat exchanger in terms of performance, size and relative cost (only if two or more optional heat exchangers have been bought).
• Flow-through and batch heating, with or without
stirring, using a heating jacket or a coil.
 Cross Flow Heat Exchanger • Determining the pressure losses created by the heat exchange rods and creating a chart of pressure drop against upstream pressure
• Calculating the inlet velocity and the mean velocity through the rods
• Determining the rate at which the heated rod cools down, within a bank of rods and by itself
• Plotting ‘cooling curves’ and using them to find the coefficient of heat transfer (h) for the heated rod at various positions in the heat exchanger
• Determining the velocity distribution (profile)
downstream of the rods
• Converting results into dimensionless values (typically using Nusselt, Prandtl and Reynolds equations)
• Comparing results and producing heat transfer
coefficient curves
Recommended Ancillaries
 3D Printer 300mm x 300mm x 400mm (2 color) Print project Models and Assembly
 Power Mill Format drawing to CNC machine and 3D printing
 Solid works Engineering Analysis tools- Solid works helps you perform 2D and 3D modelling, and this CAD software is known for its ease-of-use and intuitiveness. SolidWorks software enables you to: design very precise 3D objects. develop products
 Solidcam Engineering Analysis tools – SolidCAM provides the revolutionary iMachining technology, saving 70% and more in CNC machining time and dramatically extending cutting tool life
 Analysis Software (Ansys) Engineering Analysis tools – student where able to learn the following (Workbench GUI, Design Modeler, Overview of FEA ‘Engineering Data ,Meshing, Parametric Modeling , Advanced Loads and Boundary Conditions , Assemblies ,Multiple Load Steps, Coordinate Systems Post processing ,Intro to Thermal Analysis , Modal Analysis)
 CNC Milling Machine & Accessories For cutting and milling models generated from Software
Photo-elastic Exp Apparatus with a Transmission Polariscope (FL200) Generation of planar stress states in various                                                                                                                                                                                                                                                         models under load bending, tensile load, compressive load.
Investigation of diffusion of stresses with plane or                                                                                                                                                                                                                                                          circular polarized light.
Interpretation of photo elastic fringe patterns                                                                                                                                                                                                                                                               stress concentrations, zero points, neutral fibers,
areas of constant stress, stress gradients
Determination of occurring stresses.
Stress and Strain Analysis on a Membrane (FL120) measurement of radial and hoop strain by strain
gauges
measurement of deflection by a dial gauge
calculation of the stresses and strains from the
measured strains: radial stress, hoop stress
determination of the direction of principal stress
application of Mohr’s Circle to determine the
principal stresses and strains
basic principle: measurement of strain using strain
gauges
 Unsymmetrical Bending (FL160) product moment of inertia (Iyz) and 2nd moment of
inertia (Iy, Iz)
Euler/Bernoulli equation
symmetrical bending on a beam (uniaxial), with L-profile, with U-profile
unsymmetrical bending (complex) on a beam with an L-profile
calculation of the neutral fibers
combined bending and torsion loading by way of
eccentric force application
determination of the shear center on a beam with a
U-profile
familiarization with shear flow (shear forces in a
cross-section)
comparison of calculated and measured values
 Investigation of Simple Stability Problems (SE110.19) determination of the buckling force for the case of
an:
elastic joint
elastic fixed end support
-investigation of the buckling behavior under the
influence of:
of additional shear forces
 Demonstration of Euler Buckling (WP121) demonstration of various buckling problems
Euler case 1 – fixed-free bar
Euler case 2 – pinned-pinned bar
Euler case 3 – fixed-pinned bar
Euler case 4 – fixed-fixed bar
familiarization with the correlation between
buckling length, buckling load and various methods
of support
 Universal Material Tester(WP300) amplification and display of signals from strain
gauge measuring points
processing of measured values on computer
evaluation of stress and strain analysis
Elastic Shafts (TM625) investigation of a Laval rotor
critical speed
self-alignment
natural modes on a shaft with continuous mass distribution with
different bearing clearances
different shaft diameters
different shaft lengths