Permeability is recognized as being the most important parameter in assessing concrete durability. The depth test is performed by drilling a hole 10 mm diameter x 40 mm deep, and plugged with a silicone rubber plug. The ingress of air and moisture into the concrete can cause corrosion of the steel reinforcement and lead to a deterioration in concrete strength. An hypodermic needle is passed into the stopper; the water permeability test is performed by measuring the time of absorption needed by the water introduced into the void by pressure. Therefore, a measure of the ease of movement of liquids and gases through the surface layer of the concrete is a better method of assessing the soundness and expected life of concrete than strength alone. Surface permeability tests can be carried out by clamping a stainless. For the air permeability test, a vacuum pressure is created in the void, and the time needed to rise this pressure is measured.
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With the Air Bag Trainer, the student can learn the operation, testing and troubleshooting of an actual operating deployable air bag.
Features:
Crash and safety sensors are directly available on the board, without the student getting involved with a live vehicle. The teachings of "Back-Up" power supply are shown on the board with relative ease, in case of battery destruction. Pneumatic operated deployable air bag has a flow rate valve that controls the speed of deployment into a safe range of operation. Components are displayed and accessible. The unit provides for an Air Bag indicator light that flashes trouble codes. Diagnostic Monitoring is performed with a microprocessor which checks the wiring and electrical components.
A self-contained product that shows how a self-acting gas lubricated journal bearing works. It also shows the onset of whirl. A hand operated load control and load cell allow the user to apply and measure the load on the bearing bush. The bush has pressure tappings equally spaced around its circumference.
The shaft has a high-quality surface finish and spins inside a vertically loaded bush. The main part has a variable speed motor that turns a belt drive. The belt drive turns a precision bearing shaft. The tappings connect to a multi channel digital pressure display unit.
Experiments:
Demonstrate how bearing speed and therefore compressibility number affects the pressure distribution in the bearing, and how this compares with theory.
Demonstrate how a vertical load affects the pressure distribution around an air-lubricated journal bearing.
Demonstrate the onset of whirl.
It consists of cylinder, base, end cap, piston and seal ring. The cylinder is made of organic glass, with length of cylinder 130mm, outer diameter φ25mm and inner diameter φ10mm. diameter of base is φ65mm, diameter of handle is φ40mm and diameter of piston is φ8mm. It is used to demonstrate experiment of “temperature increases with air is compressed”.
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Pressure vessel with valve for draining
Display at switch cabinet to indicate active power
Test unit for a small industrial compressor
1-cylinder compressor
Air Conditioner (1.5Hp Split Type, Cold & Hot Inverter/ R410a)
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Air Conditioner (2Hp Split Type, Inverter/ R410a)
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Air Conditioner (3Hp Floor Standing Type Non-Inverter/R410a)
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Air Conditioner Installation And Maintenance Training Device can be used to train students to master the theoretical knowledge and practice skills of design, installation, commissioning and maintenance of air conditioning system.
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Simplicity and clearness are the fundamental requirements that permit the teacher and students to operate without having todeal first with complicated utilization procedures. The Air Conditioning And Climatization Study Unit has been developed for insertion in the most advanced educationalsubjects. The flow is pre-heated, then moisturized by steam diffusers it is cooled through the evaporator and sent to the final chamber. The working principle of the apparatus is the following an air flow generated by a centrifugal fan enters a tunnel passingthrough a fluid thread rectifier. Before this last stage it may be re-heated andmoisturized by water diffusers, to experiment on heating environments and to have the opportunity to vary as manyparameters as possible for a complete study on air conditioning. As the air passes through the tunnel it undergoes a series of treatments, until it arrives in thelast chamber, which represents the environment to be conditioned.
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Air-conditioning and Heating system trainer is a fully operational model of a typical light aircraft air-conditioning and heatingsystem. The trainer also allows the students to troubleshoot various faults induced by the instructor. All components are actual aircraft parts, and it allows the instructor to fully demonstrate the operation of the various system components.
System Features:
Vapor Cycle Compressor
Fuel tank and associated plumping
Fuel pump and associated electrical components
Compressor Motor
Thermal Switch
Combustion chamber
Ignition system components
Control Valves
Air Blower and associated ducting
Panel mounted control panel
Receiver Dryer
Condenser
Regulating valve
Thermal control switches
Product Features:
Highlights
Fully labeled electrical wires
Durable powder coating finish
System operates on 110/220V AC and 24VDC
All components are mounted on steel frame with full swivelcasters and brakes
Dimensions: 80 L x 30 D x 80 H Inches.
The air conditioning and ventilation system includes a filter element, a fan with controlled speed, a direct evaporator as air cooler, an electric air heater and humidification by steam humidifier. The experimental setup represents a real air conditioning and ventilation system. The system capacity is sufficient to climatise a laboratory room. The air conditioning controller controls the temperature and air humidity independent of each other. The following functions are possible: heating / cooling and humdifiying / dehumidifying. For this purpose the active components can be run either manually individually or via a central PLC air conditioning controller in automatic operation. Pressure losses can be measured at each section of the duct. Via time programs, operation is possible dependent on the time of the day or the day of the week, as in reality.
Learning objectives/experiments:
Explanation of components: filter, air heater, air cooler, humidifier, condensing unit, air conditioning controller, flaps, outlets
Operation of safety devices
Investigation of the control behaviour of an automatic air conditioning controller, determination of limiting factors
Practice-oriented principles of air conditioning and ventilation technology
Design and servicing of an air conditioning and ventilation system
Principles of room air conditioning (h-x diagram)
Measurement of pressure curve and pressure losses
Effect of air cooler, air heater and humidifier on the state of the air at the outlet.
Main unit with air duct, fan, air conditioning system
Air conditioning system with direct evaporator as air cooler, electric air heater, humidification
Practice-oriented air conditioning and ventilation system with 3 independent system components: main unit, condensing unit, steam generator
Air duct from hot galvanised sheet with sight window and pressure measurement connections to record pressure curves
Manual or automatic operation via plc air conditioning controller
Hoses connect direct evaporator to condensing unit, humidification to steam humidifier
Standard connection piece to connect to external ventilation system
Air duct with filter, multi-leaf damper, ceiling vent, protective grating, ventilation grille, fire protection flap, inspection flap, sound insulation link, smoke detector.
The cooling is obtained by giving heat to the exterior in the zone around the compressor. The cooled fluid expands in the expansion valve and in the evaporator and is transformed in gas. The compressor activated by the engine compresses the refrigerant which consequently warms up; in the condenser the working fluid is cooled until it reaches the liquid phase. To cool the external air refrigerating compressor based systems are exclusively used. The heat necessary for such transformation is subtracted from the entering cool air.
The simulator analyzes all the phases of the refrigeration cycle. In particular:
Relations between temperature and pressure in the refrigerant
Pressure switches
Temperature regulation
Operation of the compressor
Operation of the condenser.
The Air Conditioning Heat Pump Learning System uses the principle of vapor compression and offers three different types of expansion methods, enabling students to explore a wide range of thermal application and system designs. The Air Conditioning Heat Pump Learning System is a working system with industrial components that can perform heat pump, air conditioning, and refrigeration systems operation. The Air Conditioning Heat Pump Learning System teaches three types of thermal systems: air conditioning, refrigeration, and heat pumps. These components are mounted on a mobile workstation and supported by instrumentation, microprocessor control, student learning materials for both theory and lab, and teachers guide. Students will learn industry-relevant skills including how to operate, install, analyze, and adjust these systems. Manual valves are provided throughout so students can create faults and change system performance. Extensive instrumentation is included. Components are arranged in a breadboard fashion on the workstation to make it easy for students to follow the system flow and understand its operation.
Features:
Heavy-duty components
Various instruments for monitoring system operation.
The Air Conditioning Heat Pump Troubleshooting Learning System utilizes, the industrys only electronic troubleshooting system, to provide a hands-on experience for identifying faults such as blockages, leakage, and refrigerant overcharging and undercharging. Air Conditioning Heat Pump Troubleshooting Learning System teaches valuable HVAC troubleshooting skills on a hands-on learning system that performs heat pump, air conditioning and refrigeration operation. The Air Conditioning Heat Pump Troubleshooting Learning System consists of a mobile workstation, compressor, pressure control system, refrigeration circuit, instrumentation set, temperature control system, blower control system, and much more! Thermal systems play a key role in industrial, commercial and residential applications to provide heating and cooling of spaces and processes. This system is ideal for training HVAC technicians and installers. Learners will gain this technical knowledge by studying major topic areas like compressors, condensers, metering devices, evaporators, temperature and pressure control devices, and reversing valves. These components will provide hands-on experience for operating, adjusting, and troubleshooting air conditioning / heat pump systems in real-world, on-the-job applications.
Features:
Variable Conditions
Modern Temperature Control
Computer-Based Fault Insertion
Instrumentation Features
Optional Online eBooks.
Compact laboratory designed for training of 14 years students and over. The Air Conditioning Mobile Lab is already equipped with all the necessary feed fittings according to the industrial standards. It is ideal for all teaching environments and its modular design guarantees both flexibility and adaptability for all the experiments. It is particularly suitable to introduce the main and practical air conditioning applications in both vocational and technical schools. The trolley is completely mobile and has 5 storage drawers, protecting the equipment in shock-free, molded sponge pods. It is possible to compose the circuit on the aluminum surface to place on the working top. Opportunity of fault insertion and detection. You can organize the equipment according to the subjects for quick and easy setup and control of the equipment itself.
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The working principle of the apparatus is the following: an air flow generated by a centrifugal fan enters a tunnel passing through a fluid thread rectifier. As the air passes through the tunnel it undergoes a series of treatments, until it arrives in the last chamber, which represents the environment to be conditioned. The Air Conditioning Study Unit With Climatic Chamber And Air Recycle Circuit has been developed for insertion in the most advanced educational subjects. Simplicity and clearness are the fundamental requirements that permit the teacher and students to operate without having to deal first with complicated utilization procedures. Before this last stage, it may be pre-heated and moisturized by water diffusers, to experiment on heating environments and to have the opportunity to vary as many parameters as possible for a complete study on air conditioning. The flow is pre-heated, then moisturized by steam diffusers it is cooled through the evaporator and sent to the final chamber.
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Many parts have been chromium-plated and galvanized for a longer life. Air Conditioning System Cutaway model is carefully sectioned for training purposes, professionally painted with different colours to better differentiate the various parts.
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