With very low noise level for small capacity.
Air intake: 50 litres/min.
Max. working pressure: 8 bar or 116 PSI
Tank capacity: 24 litres
Noise level: 40 dB
Motor power: 0.34 kW or 0.45 HP
Dimensions: 40 x 40 x 60 (h) cm.
Weight: 25 kg.
A bench mounted, belt driven, single stage reciprocating air compressor with a motor dynamometer allowing measurement of the motor shaft power.
Intake and discharge air pressures are measured together with the air flow rate, motor drive speed and torque.
An intake vessel reduces intake air pulsations and a high pressure air receiver is connected to the compressor discharge.
The unit is supplied with a detailed experimental operating and maintenance manual giving example experimental results and sample calculations.
An optional computerized data acquisition upgrade is available that allows all relevant system parameters to be automatically recorded on a PC.
Integral duplex thermocouples record all relevant system temperatures and are connected to a multi-way selector switch and digital temperature indicator.
Electronic drive units independently control both motors. Meters show motor electrical power consumption of each motor. A close-coupled load cell on each motor measures torque. Sensor on each motor measures speed, shown by a digital indicator. This test set has two independently-controlled, motor driven compressors, inter cooler and air receiver. It works as a single-stage, two-stage or two-stage compressor with inter cooler. The product of the torque and speed gives true shaft power. To allow students to study different types of air compressor systems, diverter valves allow air to move in different directions. All controls and instrumentation are on an easy-to-operate mimic panel. Electric motors and low-maintenance toothed belts drive two twin-cylinder, air-cooled reciprocating compressors. These include:
From the first stage to the receiver
To the second stage, by means of the integral water cooled inter cooler
Directly to the second stage
Compressors:
Twin cylinders
Maximum delivery pressure 10.3 bar
Speed range 200-1000 rev.min1
The demonstrates the types of systems that are used in a lot of small applications in dangerous environments where systems using electrical power cannot be used or where there is no electrical power supply.
A Compressed Air Refrigeration Training Bench for studying refrigeration using compressed air. Using the whirling motion of a specially designed and shaped vortex distributor, the compressed air expands and is divided into a cold stream and a hot stream. This is an unusual method of producing cold air by the expansion of compressed air. The cold stream is utilised and the hot stream is exhausted into the environment.
The designed and manufactured to incorporate all current safety standards.
Experiments:
Thermodynamics of compressed air
Plotting the air transformation due to air expansion on a temperature-entropy diagram
Coefficient of performance (C.O.P) determination
Demonstration of producing hot and cold air through a system that has no moving parts
Determining the outlet temperature in relation to the feed pressure
Determining the useful refrigeration power
Detecting the operating curve of a vortex tube by varying the inlet pressure and the weight ratio between hot and cold air.
Multimedia learning software as an accessory to assembly projects
Simple operation with user interfaces similar to MS Windows
Editable drawings and parts lists
Access to parts lists and drawings.
Password-protected configuration files.
The gas compression apparatus consists of two commercial compressor receiver units each with added temperature indicators, flow indicator, power meter and pressure indicating controller. The compressors are of similar power demand but different design. Pressure, temperature and flow data obtained can be used to calculate compression efficiency. Control valves are provided to provide control of the downstream pressure.
Function of Compressor Trainer Single and Duplex Compressor
The gas compressors use air as the working fluid to demonstrate reciprocal compressor operation. Trainees select compressor type and flow rate then read and record the flows and temperatures for further analysis. The discharge pressure is automatically controlled to a selected process pressure set point.
The use of contrasting colors according to a pre-established code simplifies the informative process as well as the learning one. The set includes some of the most important components used in pneumatic plants for gas compression (compressors and valves of different type). Special explanatory technical plates show each sectioned component explaining its operation with notes, drawings and technical data. In sectionizing each component the best care has been taken to evidence all the interesting constructive detailed features.
....
The Trainer On Industrial Refrigerators With One Evaporator And A Semi-Hermetic Compressor With Fault Simulation allows to study the circuit layout adopted in the normal industrial refrigerators, fitted with positive temperature evaporator and semi-hermetic compressor. A wheeled frame carries a horizontal working panel, fitted with a 80 mm vice, and a vertical frame, where the main components of the unit and a silk-screen printed synoptic panel are mounted at sight. The refrigerant is Freon R134a (HFC), CFC free, and the unit includes the measuring instruments that are necessary to survey operating parameters and to test the refrigerator circuit. The student can rise his knowledge about the main components of a refrigerator plant, experiment the problems due to the filling and the emptying of the circuit and, at last, simulate some simple faults. The refrigerator circuit is made of copper pipes. The set of equipment and the vacuum and recharge station allow a fast assembly and disassembly of the refrigerator circuit.
....
The Compressors Test Bench is extremely versatile: in fact, it has been designed to allow to choose and mount compressors of different size and type, coupled to different electric motors, selected by the user. The Compressors Test Bench allows to experimentally characterize a wide range of air compressors, in a work field from 0 to 500 Nm3/h as regards the flow rate and from 0 to 10 bar as regards the pressure. The frame of Compressors Test Bench is very strong and has to be fixed to the floor; the bench is completely made of corrosion-proof materials. The high precision of the sensors installed in the Test Bench allows to perform accurate and trustable research experiments within the whole work field. An user manual is supplied with the equipment. The electric control and command board allows to operate in manual mode, by personal computer or by external board.
....
The Trainer On Domestic Refrigerators With Two Evaporators And Hermetic Compressor allows to study the circuit layout adopted in the normal domestic refrigerators with freezing room, fitted with positive temperature evaporator, negative temperature evaporator and hermetic compressor. A wheeled frame carries a horizontal working panel, fitted with a 80 mm clamp, and a vertical frame, where the main components of the unit and a screen printed synoptic panel are mounted at sight. The refrigerant is (HFC), CFC free, and the unit includes the measuring instruments that are necessary to monitor operating parameters and to test the refrigerator circuit. The student can rise his knowledge about the main components of a refrigerator plant, experiment the problems due to the filling and the emptying of the circuit and, at last, simulate some simple faults. The refrigerator circuit is made of copper pipes. The set of equipment and the vacuum and recharge station allow a fast assembly and disassembly of the refrigerator circuit.
Experiments:
Filling of a refrigerator circuit and leak detection.
Study of the main components.
Fault simulation.
Assembly and disassembly of the circuit.
The bench is trolley-mounted and has a front panel on which the control devices and all the instruments needed for the tests are located. The system includes two water coolers to cool the air generated by the compressor, complete with thermo-resistances for measuring the temperature of the air and water at the input and output. The Variable Speed Two Stage Compressor Study Unit With Digital Torque Indicator makes it possible to study the major characteristics of a twin-cylinder air compressor with two-stage compression.
....
The demonstrates the importance of drying air before it is distributed to the users sites.
The has been designed and manufactured to incorporate all current safety standards.
The refrigerant used complies with anti-pollution legislation.
The Compressed Air Dehumidification Training Plant has been designed for the study of the dehumidification process for compressed air.
It also allows students to study the psychrometric properties of compressed air.
Experiment:
Studying the operation of an expansion valve
Plant start-up and system monitoring using the protection and safety devices incorporated into the pilot plant.
Investigating system behaviour and reactions with the variation of:
Plotting the refrigerant cycle on a refrigerant pressure-enthalpy diagram
Thermostat set point
Air flow at condenser.
The compressor is driven by a variable speed d.c. electric motor with a belt gearing-up system of O to 4000 RPM with a transmission ratio of 7.5/1.If is possible to read the pressure values, upstream and downstream of the compressor, by means of 2 U shaped differential manometers. The industrial type compressor used in this apparatus is a single stage machine having a 127 mm dia impeller and an aluminium scroll with fluid threads rectifier. Thermometers are inserted into the circuit in order to read the air temperature before and after the passage through the centrifugal compressor. At the maximum speed of over 29,000 RPM, if develops a downstream pressure of about 230 mmHg with a max air capacity of 1230 kg/h.
....
It is supplied complete and self-sufficient, needing only the connection to the electrical feeding to the water network. The Compressors Study Unit Reciprocating And Rotative allows the study of the working characteristics of reciprocating and rotative compressors.
....
The refrigerant is Freon R134a (HFC), CFC free, and the unit includes the measuring instruments that are necessary to monitor operating parameters and to test the refrigerator circuit. The Trainer On Industrial Refrigerators With Two Evaporators And Semi-Hermetic Compressor allows to study the circuit layout adopted in the industrial refrigerators with two evaporators and semi-hermetic compressor. The refrigerator circuit is made of copper pipes. A wheeled frame carries a horizontal working panel, fitted with a 80 mm clamp, and a vertical frame, where the main components of the unit and a screen printed synoptic panel are mounted at sight. The student can rise his knowledge about the main components of a refrigerator plant, experiment the problems due to the filling and the emptying of the circuit and, at last, simulate some simple faults. The Trainer On Industrial Refrigerators With Two Evaporators And Semi Hermetic Compressor set of equipment and the vacuum and recharge station allow a fast assembly and disassembly of the refrigerator circuit.
Experiments:
Filling of a refrigerator circuit and leak detection.
Fault simulation.
Study of the main components.
Assembly and disassembly of the circuit.
The system includes two water refrigerators to cool the air generated by the compressor, complete with thermo-resistances for measuring the temperature of the air and water at the input and output. The Double Stage Compressor Study Unit makes it possible to study the main characteristics of a twin-cylinder air compressor with two-stage compression. The bench is trolley-mounted and has a front panel on which the control devices and all the instruments needed for the tests are located.
....
The is designed to connect to the to expand the experimental capability.
The has been designed and manufactured to incorporate all current safety standards.
A Computer Controlled Thermodynamic Cycle of a Screw Compressor training plant for studying the energy transfer in a compressed air system.
It includes industrial sensors and transducers.
The is controlled by a PC and software.
Experiments:
Determining the polytropic index
Calculating the effective average pressure of the compressor
Analysing the pressure / volume diagram of the first and second stages of the compressor by experiment
Checking the operation of the safety devices:
For detailed study of the air characteristics it is necessary to connect the ACV85 to the ACV90 Compressed Air Dehumidification Training Plant
Using a T-s diagram for air to determine the characteristics of the thermal cycles by experiment.
The refrigerant is Freon R134a (HFC), CFC free, and the unit includes the measuring instrumentsthat are necessary to monitor operating parameters and to test the refrigerator circuit. A wheeled frame carries a horizontal working panel, fitted with a 80 mm clamp, and a vertical frame, where the maincomponents of the unit and a screen printed synoptic panel are mounted at sight. The refrigerator circuit is made of copper pipes. The Trainer on Domestic Refrigerators with Two Evaporators and Open Type Compressor with Fault Simulation allows to study the circuit layout adopted in the normal domestic refrigerators withfreezer compartment, fitted with two parallel evaporators, one with positive temperature, one with negative temperature andan open-type compressor.
....
Experiments
Determination of the specific speed of the fan Essential Base Unit
Performance of a centrifugal fan
Universal Dynamometer
Variation of fan performance with type of impeller
Variation of fan performance with speed
Non-dimensional performance curves.
Recommended Ancillaries:
Pipe Flow and Nozzle Kit
VDAS-F (frame mounted version of the Versatile Data Acquisition System).
The engine used here is an air-cooled single-cylinder four-stroke petrol engine with external carburation. A modified cylinder head permits experiments with various combustion chamber inserts. To adjust the mixture composition, the carburettor was modified. In conjunction with the test stand and the load unit, the engine is highly suitable for investigation of different compression ratios, ignition timing adjustment and an adjustable jet nozzle. The engine includes a sensor to measure the exhaust gas temperature. The sensor, ignition cut-off and fuel supply are connected to the test stand. It is fitted with a special device to adjust the ignition timing from advanced to retarded.
Learning Objectives/Experiments:
Influence of compression ratio, mixture composition, ignition timing on engine characteristics and exhaust gas temperature
In conjunction with test stand load unit, in addition to the standard basic experiments
