Air Flow Experiments Apparatus, Air Flow Experiments Apparatus Equipments, Air Flow Experiments Apparatus Tools, Air Flow Experiments Apparatus Tool Kits, Air Flow Experiments Apparatus Manufacturers, Air Flow Experiments Apparatus Suppliers from India, China, Kenya
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Multi Tube Manometer allows up to 16 pressures to be monitored simultaneously either relative to atmospheric pressure or another pressure, via the common reservoir. In order to increase the device sensitivity the device may be inclined at a known angle.
Multi Tube Manometers are highly useful for capturing pressure distributions from multiple pressure ports on bodies subjected to air flow past them. The adjustable inclination of Multi Tube Manometer helps in enhancing the contrast in the distribution.
A Multi Tube Manometer with a common reservoir, that may be used to give a graphic display of pressure distribution on multi-point pressure tapings.
Mercury is used only for high speed flows like that in Supersonic wind tunnels. The inclination also increases the reading value thus increasing the accuracy of the measurement. Water or Methyl Alcohol and Mercury can be used as the fluid in these kinds of manometers.
The unit consists of a small multi stage air compressor with a motor on a steel base, inlet and outlet ducts, sensors and software. Speed control is by a variac. Multi Stage Centrifugal Demonstration Unit is a bench top unit for studying the multi stage centrifugal air compressor characteristics with data analysis by computer.
Experiments:
Effect of speed on compressor performance.
Flow rate vs pressure.
Compressor input, output, and overall efficiency.
The unit consists of an industrial type centrifugal blower with a motor and an inverter, inlet and outlet ducts with flow straighteners, a damper, and measuring instruments. Centrifugal Blower Test Set a bench top unit for studying the centrifugal blower characteristics. Extra blades are provided for comparison study.
Experiments:
Blower input, output and efficiency.
Comparison of backward, radial, and forward blade impellers.
Inlet and discharge pressures vs blower speed.
Flow rate vs speed.
The Two Stage Air Compressor Test Set Air Cooled is for studying the two stage reciprocating air compressor characteristics. Air cooling between the two stages is by finned tubes. The air receiver has a safety valve, a drain valve and a discharge valve. The unit is equipped with necessary measuring instruments and is on wheels. An industrial type compressor is driven via a vee-belt by a motor with an advanced inverter.
Experiments:
Effect of compressor speed.
Effect of inter cooling (optional).
Compressor characteristics eg. volumetric efficiency, isothermal efficiency, pressure ratio, temperature ratio.
Air water heat exchanger demonstration (optional).
Compact Centrifugal Fan Test Set is a bench top unit for studying the small centrifugal fan characteristics. An interchangeable forward blade impeller is provided for comparison of operating characteristics. The unit consists of a small industrial centrifugal fan with a backward blade impeller and a motor on a steel base, an advanced inverter, inlet and outlet ducts, and measuring instruments.
Experiments:
Comparison of backward and forward blade impellers.
Fan input, output and overall efficiency.
Flow rate vs pressure.
Effect of speed on fan performance.
The Two Stage Air Compressor Test Set Air Water Cooled is for studying the two stage reciprocating air compressor characteristics. The air receiver has a drain valve, a safety valve and a discharge valve. The piping system is arranged such that intercooler or second stage compressor can be by passed. An intercooler is provided between first and second stage. The unit is equipped with necessary measuring instruments and is on wheels. For educational purpose, the two stages are separated and can be operated at different speeds. Both stages are connected by vee-belts to the same motor with an advanced inverter. The second stage compressor has three alternative pulleys to vary the pressure ratio between the two stages.
Experiments:
Compressor characteristics eg. volumetric efficiency, isothermal efficiency, pressure ratio, temperature ratio.
Effect of second stage drive ratio.
Effect of compressor speed.
Effect of intercooler.
The Single Stage Air Compressor Test Set Air Cooled is for studying the single stage reciprocating air compressor characteristics. The air receiver has a safety valve, a drain valve and a discharge valve. The unit is equipped with necessary measuring instruments and is on wheels. An industrial type compressor is driven via a vee-belt by a motor with an advanced inverter.
Experiments:
Effect of compressor speed.
Compressor characteristics eg. volumetric efficiency, isothermal efficiency, pressure ratio, temperature ratio.
The apparatus is designed to be used on the working surface of the basic Air Flow Bench and connected by convoluted hose to the 70 mm dia. blown experiment duct on the fan outlet. However, it may be used as a standalone unit by connecting it to any suitable fan with an air supply of approximately 500 litre/sec. at 600 Pascals and by utilising appropriate manometers. A pitot static tube is fitted at the outlet end of the venturi duct and this can be traversed longitudinally along the centre line to enable its measuring tip to be positioned at various points. The apparatus comprises an acrylic duct with the upper and lower surfaces in opaque material and the sides clear. The whole unit forms a 60 x 50 mm rectangular cross section converging to a 20 x 50 mm throat area then diverging back to 60 x 50 mm section at the exit plane. Measured positions are obtained against two scales positioned on opposite sides of the duct to avoid parallax errors. A plot of typical results which can be obtained is shown in the graph. The scales are marked in millimetres but are reversible to show imperial measurements.
Introduction:
In carrying out the experiment the student is able to verify Bernoullis Theorem which, in its wider form, states that: At any point in a tube through which a fluid is flowing, the sum of pressure energy, potential energy and kinetic energy is constant.
Bernoullis Apparatus is designed to demonstrate visually the interchange between static and dynamic pressure as air flows through a duct of variable cross sectional area.
The Centrifugal Fan Demonstration Unit has been developed for the study of the characteristics of a centrifugal fan. The unit is equipped with 2 different types of impellers; (forward and backward blades), which can be easily interchanged. The direction of the rotation can be changed using the 3-position command control. Vertical and inclined gauges allow a correct reading of the pressure. The inverter allows the speed to be varied, while observing the electrical power through the power meter. A Pitot tube allows the measurement of the air velocity at any point of the tube, and the measurements can be obtained from the digital display which is provided.
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The fan inlet and outlet ports are designed to accommodate standard duct sections of 146 mm Of aluminum diameter and comprising sleeves Sealed by O-rings and tightened by Snap closures with quick disassembly. All these sections conform to the Standards.
65 mm nozzle at the inlet of the 146 mm duct diameter
65 mm diaphragm at the inlet of the 146 mm diameter
95 mm diaphragm at the inlet of the 146 mm diameter
Venturi nozzle of 95 mm-146 mm diameter Pitot tube and through mechanism
To install additional measuring devices, two Sections and a supporting device are included :
Section 1000 mm long and 146 mm in diameter, Comprises a honeycomb flow rectifier and three fasteners For the Pitot tube.
146 mm diameter input adapter, Includes measuring points for diaphragm or Venturi trunk.
The module consists of two parts, a straight section Followed by a regular 90° elbow. The lower and lower are made of black acrylic plastic while the Sides are transparent. Multitube of The velocity of the air is measured by a Pitot tube, supplied With the bench, connected to the double pipe manometer inclined. Curves representing typical results Can be obtained are presented in the graph cidessus. The conduit measures 60 mm Height for 50 mm depth. Several measuring points are located both in the parts. The top and bottom of the elbow joint to Connection with multi-tube manometer, device Necessary for the use of this module. However, it can be used separately in Connecting to a suitable fan an air flow of about 500 liter / sec for 600 Pa and using the manometer. The appliance is designed for use on the basic air flow bench and connected by pipes Twisted to the experimental duct 'blown' at the exit of the fan.
Experimental Ability:
Study of the flow around the elbow fitting.
Comparison with theory and actual readings of Pressure coefficients as well as the pressure loss at Through the elbow.
Theoretical test on the effects of the boundary layer,Turbulence and on a single whirlwind.
Definition of the dimensionless pressure coefficient.
Calculation of the volumetric flow around the elbow ratio.
Calculation of the Bernoulli equation between the upstream sector Duct and any point in the reportelbow.
Two duct support stands are provided (only one is shown in the picture) and the experiments require the use of a necessary accessory, the Multitube Manometer. The equipment comprises additional sets of ductwork manufactured in aluminium containing both pressure tappings and pitot static tube points together with a set of inlet adaptors which can be connected to the intake of the fan by means of deep spigoted sockets with O ring seals and over-centre toggle latches.
Items of ductwork comprise:
The graph shows typical results which can be obtained when measuring duct entry pressure.
65 mm dia. inlet duct with sudden transition to 95 mm dia. incorporating six static pressure tappings.
65 mm dia. bellmouth intake adaptor.
95 mm dia. by 1400 mm long section with six static pressure tappings, together with a pitot static mounting pad.
65 mm dia. bluff intake adaptor.
95 mm dia. by 1400 mm long section with a static pressure tapping and a pitot static mounting pad.
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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