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.
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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.
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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.
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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).
A Double-Compressor Air Conditioning Cycle Training Bench for studying the theoretical and practical aspects of the air conditioning cycle and the control of two compressors operating at different powers.
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Compressed air is often used instead of electrical energy, particularly in workplaces where there is a risk of explosion of combustible gases. The heat generated by compression is dissipated by cooling fins. Compressors are at the core of compressed air generator plants. These plants are used where compressed air is used as a source of energy. The compressor is driven by a V-belt. This enables references to be made between individual components and the Large-format drawings suitable for workshop practice can be attached to the display board at the rear of the trolley. A second fully functional compressor, permanently mounted to the workbench, can be used for demonstration purposes. A disassembled piston compressor is contained in the drawers of the trolley cabinet which also holds the tools and assembly aids, small parts and gaskets required for assembly.
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An electrically-powered device designed to deliver high-flow (exceeding peak inspiratory flow) heated and humidified ambient air or air/oxygen to a neonatal patient as part of noninvasive ventilation (NIV); it may additionally be used with a water tank to produce bubble continuous positive airway pressure (bubble CPAP).
Continuous Positive Airway Pressure (Bubble CPAP) system for the non-invasive respiratory support of normal, premature or low-birth weight neonate with spontaneous breathing. The unit has an integrated pulseoximeter to measure the level of arterial oxygen saturation in blood.
It consists of a gas flow generator that entrains room air, an oxygen input, a heating element, and humidification chamber; it does not include CPAP controlling pressure sensors (i.e., not a full CPAP unit). It is intended for use by a healthcare provider on a spontaneously breathing patient in hospital settings.
Hermetic refrigerant compressors have welded sheet steel housing. The drive motor and refrigerant compressor are fitted in this capsule. The motor compressor is suspended by springs in the capsular housing which minimises the transmission of vibration to the capsule body, thereby reducing noise emission. Unlike open compressors, the refrigerant compressor is directly connected to the drive motor and therefore does not require any floating seal.
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These differ in their characteristics decisively from flow equipment which include the turbo compressors that are common in very large systems. In Piston Compressors the flow rate is mainly dependent on the displaced volume and speed. Smaller refrigeration systems usually have a Piston Compressor. Because the flow rate is a measure for the refrigeration capacity of the refrigeration system, the properties of the compressor are important for the capacity of the whole system. Piston compressors are positive displacement machines. Due to the unavoidable dead space the flow rate drops with increasing pressure ratio.
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The electrical components for the start and operation of a refrigerant compressor are clearly visibly arranged in a transparent showcase and already wired. The capacitor and start-up relay required for the motor are examined. Identifying electrical faults in refrigeration systems requires comprehensive knowledge this knowledge includes the design and operation of the individual electrical components as well as the reading of circuit diagrams. It helps to acquire this knowledge. The simulation of 15 different faults, e.g. coil fracture in the motor, short circuit in the operating capacitor or welded contacts in the start-up relay, is possible. Typical protection devices, such as circuit breaker and automatic fuse, are also arranged clearly visible.
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Single-stage compressor, air-cooled, with fan flywheel, intake filter and pipe unions
Assembly exercise for engineering training
Compressor consisting of piston and cylinder, housing, driving gear, cylinder cover with valves
Complete, disassembled piston compressor with small parts set and 6 assembly jigs in a storage case.
An electrically powered device designed to deliver high-flow (exceeding peak inspiratory flow) heated and humidified ambient air or air/oxygen to a neonatal patient as part of non-invasive ventilation (NIV); it may additionally be used with a water tank to produce bubble continuous positive airway pressure (bubble CPAP). It is intended for use by a healthcare provider on a spontaneously breathing patient in hospital settings. It consists of a gas flow generator that entrains room air, an oxygen concentrator, a heating provision, and humidification chamber; it does not include CPAP controlling pressure sensors.
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Pressure vessel with adjustable pressure switch and manometer
Switch box with controls and ammeter to indicate current consumption
Unit for functionality testing of the piston compressor from assembly exercises
Safety devices: pressure switch, safety valve, protective screen for belt drive, emergency-off switch
Driven by electric motor and belt drive
Single-phase electric motor on adjustable carriage.
MG Screw compressor with charge-air cooling
Easily visible:
Two screw spindles, driven via a magnetic clutch and gear wheels.
At the bottom of the charger, is the cutaway charge-aircooler with water channels.
The charger runs at 12,000 RPM.
Pressure vessel after the second stage with safety valve, blow-off valve and silencer as well as an Additional manometer and a pressure switch
Intake vessel with nozzle to measure the intake volumetric flow rate, pressure sensor and additional manometer
Recording the characteristic of a two-stage compressor
Digital displays for temperatures, pressures, differential pressures and electric power output
Piston compressor with 2 cylinders in V-arrangement
Pressure vessel after the first stage as intercooler
Sensors for pressures, temperatures and electric power output.
The unit itself includes the electric drive motor with speed control, 2 pressure vessels for the compressor experiments, a measuring tank and a supply tank for the pump experiments and a protection cover. The intake and delivery pressure, temperature, motor speed and power are measured and displayed digitally. The modular system allows the investigation of different machines (reciprocating machines and turbo machines). The corresponding flow is measured indirectly and transferred to the PC data acquisition software. Each machine is mounted on a base plate, which can easily be fitted into the unit. It is powered by a belt drive. Hoses with quick-action couplings provide the supply lines.
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Radial compressors are used to compress gases. The experimental unit provides the basic experiments to get to know the operating behaviour and the important characteristic variables of radial compressors. A protective plate placed in front of the inlet of the intake pipe prevents larger objects from being sucked in or the clogging of the intake opening. The medium is sucked in axially to the drive shaft by the rotation of the impeller and flows through the impeller rotating at high speed. By means of centrifugal force, the medium is accelerated towards the outer edge and is compressed in this manner. The air flow is adjusted by a throttle valve at the end of the delivery pipe. The microprocessor-based measuring technique is well protected in the housing. The experimental unit is fitted with sensors for pressure, temperature and speed. The flow rate is determinated via differential pressure measurement on the intake nozzle.
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