The system uses a manual automotive gear. The input shaft is driven a motor dynamometer via a belt and pulleys. Speed is controlled by an inverter. The output shaft is attached to an eddy current absorber dynamometer. The Automotive Gear Study Unit is for studying the acceleration of an automotive gear system as well as gear system efficiency under different gear ratios and speeds. The system requires outside water supply for water brake absorber cooling. The unit is on steel frame with adjustable footings. The gear output shaft is extended for a study of inertia of a mass and equivalent enertia of the gear system.
Experiments:
Equivalent inertia of the gear.
Effect of speed and load on efficiency.
Input power, output power and efficiency.
Unit mounted on an anodized aluminum frame with painted steel panel.
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The equipment consists of a pivoted arm carrying a weight at its end and kept in equilibrium by a spring balance at right angles to the arm by holding the free end of the spring balance on the angular position of the arm is indicated by an angular scale the arm pivot.
Work Done By A Variable Force (Tangential Effort) : This apparatus is for demonstration of work done by a force as area under the graph of force and the distance it moves.
Features:
Reinforces concepts of work and energy
Direct reading of tangential effort
Low cost, effective teaching
Self-contained
Bench mounted.
The unit is assembled with a trolley mounted frame and does not require any maintenance. The group is supplied with manuals which describe all parts of the unit, the installation and utilisation procedures, as well as many exercises with the relative results. It is available an automatic data acquisition and analysis system for Personal Computer, which allows to take the measurements automatically, to plot the curves on screen or print them out, to store the experimental data on disk or print them. The Centrifugal Fan Study Unit allows the study of typical parameters of an industrial centrifugal fan. Measurements can be performed varying the working conditions and compared with data resulting from the theory.
The Centrifugal Fan Study Unit is available in two versions:
Centrifugal fan study unit - Computerized version
Centrifugal fan study unit - Standard version
Experiments
Investigations into the resistance of materials to crack propagation.
Introduction to the principles of common impact testing methods, such as Izod and Charpy tests.
Computer interface unit and software are included. The Two Hinged Parabolic Arch Computer Interface set has the same accessories as except Horizontal Force Support is replaced by Horizontal Force Load Cell.
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Gearbox Apparatus can be slid across each other by the use of a lever with ball knob and the whole gearbox can be rotated using the rotating handle attached on the side of the input pulley. The gears are industry standard gears finished in high quality and mesh together in different ratios within the frame. A study wall mounted frame houses all the gears, shafts, bearings and levers contained within this apparatus. All gears run on shafts fitted into bearings and the changing mechanism ensures smooth transition. A 'H' style change with gear change lever and knob allows the use of the different gears within the system.
Protractors on the input and output shaft pulleys are fitted. A set of masses and hangers is supplied to allow the shafts to be driven. The input and output pulleys allow loads to be applied for lifting and lowering. This unit is hand operated. A set of clear, transparent guards are fitted so that safety is maintained and clear visibility is ensured.
Experimental Capabilities:
Measure of the angular displacement at the input and output of the gear box and comparison with the calculated values
Enables velocity and torque ratios to be determined.
Calculation of the efficiency for different ratios according to the torque at entry
The Heat Pump in Air Conditioning Training Bench has been designed and manufactured to incorporate all current safety standards.
A Heat Pump in Air Conditioning Training Bench for studying the theoretical and practical aspects of the use of heat pumps in air conditioning systems.
The refrigerant used complies with anti-pollution legislation.
Experiments:
Analysing system behaviour and reactions with the variation of condenser and evaporator air flow
Plotting the cycle in a refrigerant pressure-enthalpy diagram
Studying the operation of a heat pump
Studying the operation of a cycle reversing valve.
The apparatus is supported on a PVC base into which a vertical water supply pipe is fitted. Surrounding the supply pipe is a transparent plastic shield fitted with a top PVC flanged cover assembly. Impact of Jets apparatus enables experiments to be carried out on the reaction of a jet of water on vanes of various forms. In operation, water from the Hydraulics Bench is fed into the unit and a vertical jet is produced through the supply pipe and its interchangeable nozzle. The water from the jet is deflected by the reaction vane under test, and drains away through the large aperture in the base of the chamber. The reaction vane is held within the transparent shield approximately 20 mm above the vertical water supply pipe nozzle by a rod which passes through the top cover and supports a flat tray, onto which masses may be placed. Three different types of reaction vane are supplied with the apparatus and the types are flat, hemispherical cup and 45° cone form. The force produced by the jet impinging on the target is transmitted by the rod, to the flat tray where weights are placed in order to balance this transmitted force. Two interchangeable nozzles for the supply pipe are supplied, one of 8 mm and one of 5 mm diameter. Each vane can be secured to the pivot arm by a set screw and when not in use is stored on pegs on the unit base plate.
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Power supply unit for variable three phase voltage suitable for supplying AC machines.
Multifunctional digital instrument that supplies voltage, current and power
Ac output: 3 x 0 ... 380 V, 8 A
Start and stop push-buttons
Motor protection circuit breaker: 6.3 to 10 A
16 A, 30 mA differential magneto-thermal main switch
Key operated emergency push-button
Modbus interface connectors.
Supply voltage: three-phase from mains.
The output voltage is set by a rotary knob with 0-100% scale.
The measurements, which can be performed varying the operation conditions, can be easily compared with data resulting from the theory. The educational Mini-Pelton action turbine allows to study the typical parameters of action turbines. The group is supplied with manuals which describe all parts of the Pelton Turbine Study Unit Bench Top Model unit, the installation and utilisation procedures, aswell as many exercises with the relative results. The plant is easy to control and needs a little periodic maintenance.
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Blow Down Wind Tunnels are a special type of Open Circuit wind tunnel. For Blow Down Wind Tunnels, however, air is blown down into the wind tunnel by a fan located upstream of the test section, as the name implies. Compared to standard Open Circuit wind tunnel configuration, blow-down style tunnels provide an extra degree of testing flexibility. For most Open Circuit tunnels, fan assemblies are located downstream of the test section and air is drawn through the wind tunnel with suction. Most commonly, these tunnels are used for tests requiring liquid or particulate injection. All blow-down style tunnels have custom test sections, and many are requested to include built-in test article mounting arrangements. Because all tunnels are made to fit the customers needs, there is no limitation to the options available.
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The Mini Pelton Turbine Test Set unit consists of a storage tank on a steel base, a pump, a turbine, a dynamometer, and measuring instruments. The adjustable nozzle direct a water jet to the runner buckets. Mini Pelton Turbine Test Set is a self contained bench top set for studying the Pelton turbine characteristics under various flow rates and heads.
Experiments:
Power output vs speed for various heads and flow rates.
Efficiency vs speed for a given head and flow rate.
Torque vs speed at various heads and flow rates.
Racing characteristics.
Experiments:
The flexible design of the equipment allows the user to develop many other analysis and control exercises to suit their needs. It is good for extended or advanced control experiments, and is ideal for student project work.
Design of state re-constructors to obtain estimates of ball velocity and position
Design of analogue phase-advance compensators
Measurement of system dynamics by transient and closed-loop methods
Essential Services.
Bench space needed: 1.5 m x 750 mm
Electrical supply: 90 VAC to 250 VAC, 0.4 A, 50/60 Hz, with earth.
The program consists of a trainer built with genuine equipment and educational materials to teach the fundamentals of Common Rail fuel injection and engine control. The electronics are faulted in order to create problems in the fuel system for student diagnosis and practice. Cummins Diesel Trainer is constructed from a Cummins type vehicle, using an electronically controlled Diesel fuel injection.
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Complete with connecting cables, experiment manual, interface to PC and software for data acquisition and display. Solar Wind Fuel Cells Energy Trainer has been designed for the study of renewable energies: solar energy, wind energy and hydrogen fuel cell systems.
Training Objectives:
Determining characteristic curve of solar panel
Hydrogen/oxygen or hydrogen/air operation
Assembling a fuel cell
Determining electrolyser efficiency
Learning about Faradays laws
Determining characteristic curves of fuel cell
Producing and storing hydrogen
Determining decomposition voltage of water
Building a model hydrogen car
Using methanol to generate electricity
Determining characteristic curve of electrolyser
Determining fuel cell efficiency
Voltage and current in a series connection of solar panels
Voltage and current in a parallel connection of solar panels
Determining characteristic curves of DMFC
Influence of the surface of a solar module on voltage and current intensity of a solar module.
The Turbofan Engine Cutaway Model is powered by an AC motor to turn freely to demonstrate the phased operation of compressor and turbine.
Engine Features:
Fan/Compressor Stages: 1/8
Length (Inches): 75.5
Core / Power Turbine Stages: 2/1
Max Diameter (Inches): 33
Bypass Ratio: 2.0
Dry Weight (Lbs.): 725 - 737.
Cutaway Features:
Motorized cutaway on engine stand with casters
Cutaway provides a clear view of the:
Compressor Section
Combustion section
Turbine section.
The can serve the purposes of training students on new generation of digital autopilots, as well as familiarizing the students with the essential features of EFIS. The Two-axis digital autopilot trainer is based on an EFI Swith autopilot interface, usually found in light aircraft.
The interface to the EFIS results in autopilot operation in the following modes:
Heading Mode
GPS Navigation Mode
VOR Navigation Mode
Ground Track Mode
GPS Steering Mode
Altitude Mode
Turn-Around Mode
Localizer Tracking Mode.
The EFIS Display has the following characteristics:
Display Type: LCD, TFT (Thin Film Transistor)
Resolution: 854 x 480 color pixels.
Back light: at least 800 nits
Size: 7.0 diagonal (178 mm).
Unsymmetrical Cantilever Apparatus Angular adjustment can be made easily and the angular position can be read off using the integral angular scale and pointer. The free end of the cantilever has point loads applied using the load hanger and calibrated weights. Unsymmetrical Cantilever Apparatus allows the vertical and horizontal deflections of the free end of a test specimen to be measured when loading occurs along a principle axis or at a known angle. Unsymmetrical Cantilever Apparatus holds the indicators relative to the rigid end of the cantilever to ensure accurate deflection measurement. A solid base holds a rigid vertical end support for the clamping of the test cantilevers. Test cantilevers and rectangular cross section are supplied. The free end movement is measured using deflection indicators. Shear centre work can also be undertaken.
Experimental Capabilities:
Vertical and horizontal deflection of unsymmetrical cantilevers
Shear centre location
Comparison between actual and theoretical results
Moment of area
Mohrs circle
Intended use:
Used in wide range of laboratory services from hospital laboratory to reference centre. Sticker for labelling biohazardous samples/waste materials.
