Features:
High and low-side A/C pressure gauges.
A/C compressor has manual starter with internal thermal protection.
High pressure (300psi) safety switch shuts off compressor.
Clear sight glasses at the orifice tube, condenser (3) and evaporator (3). Sight glasses located at the inlet, mid-way and outlet of both evaporator and condenser to show refrigerant change of state
Orifice tube system.
Stainless steel condensate drip pan with drain
Hermetically sealed piston type compressor with oil reservoir.
Cycling switch bypass toggle switch.
Adjustable 3-speed evaporator (1) and condenser (2) fans.
Power ON indicator light.
Removable magnetic component name labels and refrigerant flow direction arrows.
Operation and Student assignment manual included.
The trainer uses the TXV (Thermal Expansion Valve) design of refrigerant flow control. The trainer uses common automotive components and can be used in both classroom and shop environments. The Air Conditioning System Trainer Thermal Expansion Valve is a complete A/C system with unique features designed to enhance the instruction of air conditioning physics. The trainer utilizes a hermetically sealed and internally protected compressor. Operates on 120V 15A 60Hz circuit.
Features:
Digital thermometers (4) at inlet and outlet of evaporator and condenser.
Two rows of LEDs that help in viewing refrigerant flow in condenser and evaporator which allow for clearer viewing of refrigerant flow.
OEM R134a service ports.
High and Low side A/C pressure gauges.
Adjustable temperature control switch for evaporator temperature levels.
Stainless steel condensate drip pan with drain.
Removable magnetic component name labels and refrigerant flow direction arrows.
Internally protected hermetically sealed A/C compressor.
A/C compressor has manual starter with internal thermal protection.
Cycling switch bypass toggle switch.
Operation and Student assignment manual included.
Chamber with wet (latent) and dry (sensitive) heat source as cooling load
Motorised flaps for recirculating and outer air operation
Air duct with fan, air cooler, humidifier, flaps, air heater and sensors
Process schematic with signal lamps
Air conditioning system ready for different automation solutions: 4 data cable connections to integrate the accessories
Model of an air conditioning system with outer air and recirculating operation
Air duct with transparent front
Model of an air conditioning system with outer air and recirculating operation
Motorised flaps for recirculating and outer air operation
Process schematic with signal lamps
Air conditioning system ready for different automation solutions: 4 data cable connections to integrate the accessories
Air duct with fan, air cooler, humidifier, flaps, air heater and sensors
Chamber with wet (latent) and dry (sensitive) heat source as cooling load
Air duct with transparent front
Digital displays for air temperature, air humidity, air velocity, temperature of the cold water, power
Air conditioning system with chamber for conditioning and air technology investigations
Industrial components: fans, air-cooled water chiller, air cooler, air heater, steam humidifier
Chamber suitable for test persons to be inside
Plc air conditioning controller, manual and automatic operation.
The Air Conditioning trainer offers an enhanced training resource, hands-on training with real components, greater understanding for the student with out the constraints of the modern motor vehicle.
Self contained fully operational Air Conditioning Trainer.
Complete with compressor, condenser, receiver dryer, expansion valve and evaporator.
Supplied with sight glasses to observe the state of charge of the refrigerant in the high andlow pressure sides.
High and low pressure service ports, easily accessed for recovery and re-charging of there frigerant.
Fully portable unit easily transported for off-site training, complete with stand.
Component used represent a modern A/C circuit, environmentally friendly, using R134a refrigerant.
The air is next passed through a filter of the type used in commercial systems and then cooled by the evaporation of refrigerant in a built-in condensing refrigeration unit. A variable delivery fan supplies metered air to a pre-treatment plenum chamber where it can be heated and humidified to a variable and measured extent. Any moisture condensed from the air at this stage is collected in a measuring cylinder. The refrigerant compressor is a single cylinder unit driven by an AC motor. The air then passes through a reheating chamber with a measurable heat input facility before discharge to atmosphere. The design of the unit is such as to ensure that all readings provided by the instrument relate to a proper homogeneous air flow.
Special Features:
The refrigerator condenser is adequate for use under tropical conditions, i.e. with cooling water up to 32ºC (90ºF).
Temperature readings from a total of 16 remote reading thermocouple instruments are provided by the Cussons multi-point, multi-range, thermometer. Safety in use Interlocked controls make it impossible to generate steam from the humidifier or to run either the air flow preheater or the air reheater without first turning on the air flow blower. However, water in the steam generator can be heated to 90ºC before starting the blower, in order to save class time. The level of water in the steam generator is shown by a sight glass.
The temperature reading point operative at any one time is shown by an indicator light on the mimic diagram.
Electrical Faulting either locally via Keypad or remotely via Network
Selectable Interior Temperature Settings
Compact Variable Compressor
Thermostatic Expansion Valve
Automatic/Manual Dual Zone Climate Control
Powder-Coated Frame
Courseware Included
Includes Refrigerant Liquid Line control valve for Pressure Faulting
Tip Jacks for DVOM measurements
220V 5HP Motor.
The heat exchanger system is a fully functional Air Cycle Machine (ACM) , driven by simulated turbine-engine bleed air, representing atypical system in a modern turbine engine powered aircraft.
System Components:
The trainer includes the following components:
Primary and Secondary Heat Exchangers
Water Seperator
Air cycle machine (ACM)
Temperature sensor
Temperature control valves
Over Temp Sensor
ACM bypass valve
Cabin ventilation blower
Lag chamber
Simulated bleed air source
Digital display of the temperatures of the cabin chamber,bleed air, and ambient air controller.
Dimensions:
72 L x 35 D x 72 H Inches.
The Air Distribution Study Unit consists of a centrifugal fan, driven by a variable speed a.c. with inverter electric motor that can be easily regulated. A kit of ducts, bends and elbows of commercial size is supplied with the unit to simulate an air duct and to study its headlosses. Air Distribution Study Unit has been designed to perform a complete set of experiments concerning air distribution inconditioning plants. A kit of instruments (Pitot tube, Venturimeter, anemometer, differential manometer) is supplied along with the unit in order tomeasure the most important quantities.
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Air ducts from galvanised folded spiral-seam pipe with pipe bends, joints and components
Pressure measuring connections with variable locations
Experimental setup for training in ventilation engineering
Inclined tube manometer and digital manometer for 2 different measuring ranges
Measuring of the air velocity by anemometer
Radial fan, on mobile frame, to connect air ducts
6 assembly stands to attach the air ducts
Switch cabinet with display of power consumption.
The Air Flow Bench consists of a welded steel frame, Air Flow Bench - General assembly with accessories mounted on castors, and provides two work surfaces for experiments and integral storage space. The ductwork supplied with the Air Flow Bench is manufactured in aluminium sections assembled by deep spigoted sockets, sealed by O rings and clamped by quickrelease over-centre toggle latches. The duct work includes flow straighteners and an adjustable discharge valve. A tangential fan (i.e. fitted with a narrow chord centrifugal impellor), directly driven from a single phase induction motor, provides the necessary air flow for experiments. The fan is capable of providing a flow of 500 litres/second at a static pressure rise of 800 Pascals. The instrumentation supplied with the Air Flow Bench comprises a digital manometer, barometer, conical inlet flow measuring device, and pitot static tube for traversing the duct. An electrical enclosure is mounted on the upper work surface and contains the fan contactor, fan start and stop pushbuttons, and provides electrical power for optional additional equipment. An optional data logging system with various modules is available to provide 0-10V dc analogue outputs of all measurements for interfacing to a computer system.
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Experiments from the field of steady incompressible flow
Radial fan infinitely variable via frequency converter
Pitot tube in the free jet, 3-dimensional adjustable
Different measuring objects: orifice plate, nozzle, iris diaphragm, pipe fittings
16 tube manometers for displaying the pressures
Horizontal measuring section
Pitot tube within the pipe section, vertically adjustable at 3 positions.
Many parts have been chromium-plated and galvanized for a longer life. Air Flow Sensor Cutaway is carefully sectioned for training purposes, professionally painted with different colours to better differentiate the various parts and cross-sections.
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The printed circuit board with its hybrid circuit can be seen at the back on thecut-away housing. Inside thecut-away plastic housing, the platinum heating filament, the precision resistor and the temperature compensation resistor can be seen in the inner tube.
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Boundary layer growth is determined by the measurement of the velocity profile at four stations along the pipe using a traversing Pitot tube.
A bend or mitred cascade elbow may be fitted mid way along the smooth wall pipe for comparison of pressure losses.
Air enters the smooth walled pipe through one of the two flow measurement nozzles provided. Pressure tappings along the length of the pipe permit the pressure gradient to be determined.
The equipment includes a long smooth walled pipe joined to the suction side of an electrically operated centrifugal fan. The fan discharge pipe terminates in a flow control damper for closed conduit work or a plate containing a small aperture for jet dispersion measurements.
A conventional flow measuring orifice plate is supplied for installing in the pipe upstream of the fan for additional demonstrations of pressure loss and recovery.
The equipment is mounted on a floor standing steel frame with an adjacent support for the extended suction pipe. Pressure measurements are made on a multi-tube inclinable manometer mounted on the support frame.
Air jet studies are carried out on the discharge side of the fan. A Pitot tube is traversed vertically and horizontally at different distances from the discharge orifice to investigate the dispersion properties.
Boundary layer growth is determined by the measurement of the velocity profile at four stations along the pipe using a traversing Pitot tube.
A bend or mitred cascade elbow may be fitted mid way along the smooth wall pipe for comparison of pressure losses.
Air enters the smooth walled pipe through one of the two flow measurement nozzles provided. Pressure tappings along the length of the pipe permit the pressure gradient to be determined.
The equipment includes a long smooth walled pipe joined to the suction side of an electrically operated centrifugal fan. The fan discharge pipe terminates in a flow control damper for closed conduit work or a plate containing a small aperture for jet dispersion measurements.
A conventional flow measuring orifice plate is supplied for installing in the pipe upstream of the fan for additional demonstrations of pressure loss and recovery.
The equipment is mounted on a floor standing steel frame with an adjacent support for the extended suction pipe. Pressure measurements are made on a multi-tube inclinable manometer mounted on the support frame.
Air jet studies are carried out on the discharge side of the fan. A Pitot tube is traversed vertically and horizontally at different distances from the discharge orifice to investigate the dispersion properties.
The demonstrator can do work according to the principle of compressed air into the cylindrical base of a frame, sitting round a balloon, a shape, size: 210mm*210mm*260mm, the diameter of the cylinder 150mm.
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The trainer enables the measurement of air humidity with four different instruments which can be directly compared to each other: two different hygrometers, a capacitive hygrometer and a psychrometer. There are different measuring methods to determine humidity. Psychrometers operate based on the principle of evaporation cooling and compare the ambient temperature with the wet bulb temperature to determine the humidity. The measurement of the air humidity plays an important role in many branches of industry, e.g. during drying or in the air conditioning of buildings and vehicles. Hygrometers utilise the property of specific fibres, e.g. hair, to expand with increasing air humidity. The core element of the trainer is a climatic chamber with transparent door. In the capacitive sensor the dielectricity constant of a layer and with it its capacity changes due to the water molecules absorbed. This chamber can be humidified and dehumidified and contains the four instruments.
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This demonstration unit is part of an equipment series that facilitated investigations on pneumatically driven turbines. The flow rate in the system is measured with a variable-area flowmeter. For the operation of the unit, a mains connection and a compressed air supply are required. Inlet and outlet pressure at the turbine are indicated on easy to read dial instruments. For exact measurements the table unit is equipped with electronic sensors for recording temperature, speed and torque, the values recorded are indicated on digital displays.
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