Air Duct Apparatus | PolarX – 576
The Air Duct Apparatus PolarX – 576 is a realistically scaled ventilation training unit for studying fluid mechanics, airflow, and multi-duct system balancing. This Air Duct Apparatus features a forward-curving variable speed centrifugal fan (0.75kW, up to 890Pa and 0.8m³/s) discharging into 200mm dia. galvanized steel ductwork with at least 6 balanceable air supply locations. Measurement tools include a combined vertical/inclined manometer, pitot static tube, and digital anemometer (range 0~30m/s). Optional LABVIEW-based DAQ software supports automated data measurement.
The Air Duct Apparatus PolarX – 576 is a realistically scaled ventilation training unit that teaches fundamental fluid mechanics and airflow. This Air Duct Apparatus also covers the more complex process of commissioning and balancing a multi-ducted air distribution system.
Product Overview The unit includes a rectangular air inlet and filter holder, along with a forward-curving variable speed centrifugal fan and integral control console. Depending on the blockage factor, the fan’s feed pressure can reach 890Pa and its flow rate can reach 0.8m³/s. A 200mm dia. galvanized steel duct, into which the fan discharges, is directly connected to the distribution ductwork.
This Air Duct Apparatus comes with enough parts to allow users to conduct parallel branch and line balancing tests. At least 6 air supply locations can be balanced on the constructed unit to provide a variety of airflows. A variety of studies can be carried out using a portable manometer, pitot static tube, and hand-held anemometer.
Air Duct Apparatus PolarX – 576, Technical Specifications
| Component | Type / Detail |
|---|---|
| Fan Unit | Motor power 0.75kW (approx.) on load |
| Starting Load | Greater than running load |
| Fan Supply Pressure | Up to 890Pa, depending on blockage factor |
| Fan Flow Rate | Up to 0.8m³/s, depending on blockage factor |
| Fan Discharge | Directly into 200mm dia. galvanized steel duct |
| Ductwork Material | Galvanized steel |
| Manometer | Combined vertical (range 0~2000 Pa) and inclined (range 0~200 Pa) |
| Pitot Static Tube | Included |
| Anemometer | Battery powered rotating vane, digital readout, range approx. 0~30m/s |
| Safety | All rotating components covered when filter and holder are in position |
Technical Data
Main Components
| Component | Detail |
|---|---|
| T-Branch | Included |
| Straight Length | Included |
| Parallel Duct | Included |
| 45° Bend | Included |
| 90° Bend | Included |
| 180° Bend | Included |
| Down Bend | Included |
| Air Handling Unit | Included |
| Active Damper | Included |
| Pitot Tube | Included |
| Diffuser | Rectangular Diffuser, Round Diffuser, Flow & Cover Blade Adjustable Diffuser |
Material
| Parameter | Value |
|---|---|
| Construction | Galvanized Steel |
Anemometer
| Parameter | Value |
|---|---|
| Range | 0~30m/s |
Motor
| Parameter | Value |
|---|---|
| Type | Blower type |
| RPM | 1100-1400 |
| Phase | Single |
| Voltage | 220VAC |
| Current | 6 AMP |
| Frequency | 50 hz |
Digital Multifunctional Power Meter
| Parameter | Value |
|---|---|
| Range of AC Volt | 0~500 volts |
| Range of AC Ampere | 0~40 Ampere |
Stand
| Parameter | Value |
|---|---|
| Gauge of Iron Used | 24 gauge |
Key Features
- Application: Air Duct Apparatus for ventilation training, fluid mechanics, and airflow study
- Fan Unit: Forward-curving variable speed centrifugal fan, 0.75kW motor power (approx.)
- Fan Performance: Up to 890Pa supply pressure, up to 0.8m³/s flow rate
- Ductwork: 200mm dia. galvanized steel, direct fan discharge connection
- Balancing Capability: At least 6 air supply locations for airflow balancing
- Measurement Tools: Portable manometer, pitot static tube, hand-held anemometer
- Manometer: Combined vertical (0~2000 Pa) and inclined (0~200 Pa) ranges
- Anemometer: Battery powered, digital readout, range 0~30m/s
- Motor: Blower type, 1100-1400 RPM, single phase, 220VAC, 6 AMP, 50 hz
- Safety: All rotating components covered when filter and holder are in position
- Stand Construction: 24 gauge iron
Experiments
- Investigation of pressure losses in bends, branches, changes of section and over straight lengths of duct, together with the variation in pressure drop with velocity
- Determination of the ‘K’ factor for the pressure loss of the above components in each particular configuration
- Examination of typical components, fabrication, installation and assembly techniques used in air handling systems
- Investigation of the fan pressure and volume flow characteristics at various supply voltages
- Examination of standard types of panel and bag filters and their pressure drop against face velocity
- Carrying out commissioning leak testing on all components in an installed system
- Adding tee branch and two diffusers in a system and investigating their effect
- Measurement of air flow rate using pitot-static traverse, orifice pressure differential and anemometer methods
- Balancing of air flow distribution in a series or two branch parallel distribution system using either main damper or fan speed flow control
Construction and Design
The Air Duct Apparatus PolarX – 576 features a rectangular air inlet and filter holder, together with a forward-curving variable speed centrifugal fan and integral control console. The fan discharges directly into a 200mm dia. galvanized steel duct connected to the distribution ductwork. Main components include T-branch, straight length, parallel duct, 45°, 90°, and 180° bends, down bend, air handling unit, active damper, pitot tube, and multiple diffuser types. All ductwork and components are constructed from galvanized steel. All rotating components are covered when the filter and holder are in position. The stand uses 24 gauge iron.
Software
PolarX – 576 (optional). A DAQ software package, specially designed in National Instruments LABVIEW environment, measures and calculates the results of the apparatus. The software is optional. When the software is used, a set of electronic sensors is included. The software can be run on any Windows environment.
Scope of Delivery
- 1 experimental module
- 1 instruction manual
Q: What is the maximum fan pressure and flow rate of the Air Duct Apparatus PolarX – 576?
A: Fan supply pressure reaches up to 890Pa and flow rate reaches up to 0.8m³/s, depending on the blockage factor.
Q: How many air supply locations can be balanced on this unit?
A: At least 6 air supply locations can be balanced to provide a variety of airflows.
Q: What measurement tools are included?
A: A portable manometer (combined vertical and inclined), a pitot static tube, and a battery powered rotating vane anemometer with digital readout (range 0~30m/s).
Q: What ductwork components are included?
A: T-branch, straight length, parallel duct, 45°, 90°, and 180° bends, down bend, air handling unit, active damper, pitot tube, and rectangular, round, and adjustable diffusers.
Q: Is the DAQ software required to operate the unit?
A: No. The PolarX – 576 software is optional, and a set of electronic sensors is included when the software is used.
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