HL 710 Air duct systems
Ventilation systems are used in many areas. They are used to ventilate offices, sports halls, production halls, conference halls etc. These systems consist of an air duct system and often other facilities for the conditioning of room air. There may also be elements for air purification or sound insulation, e.g. filters.
The trainer HL 710 examines how the air can be distributed in a building. The air duct system is supplied via a speed-controlled fan. The trainee constructs variable air duct systems from commercial components, such as pipes, pipe bends, branches, filters and disk valves. Connections for pressure measurements can be installed at any position.
The effects of the individual components on the pressure loss and thus on the velocity and flow rate of the air are examined. For this purpose there are two manometers with different measuring ranges and a manual device for measuring the air velocity. The fan characteristic is also determined and the power consumption of the fan is measured.
- planning and setup of simple and complex air duct systems
- measurement of the dynamic and static pressures in air duct systems
- measurement of the air velocity and volumetric flow rate under different conditions
Fan
- power consumption: 900W
- max. volumetric flow rate: 1680m3/h
- max. pressure difference: 1000Pa
- speed: 0…2840min-1
Pipes
- length: 1600mm
- diameter: 8x DN200, 8x DN100
Pipe bends and connections, each DN100 and DN200
- 90° pipe bend, 45° pipe bend
- 45° branch
- T piece, T piece with reducer
- reducer, plug-in connection, pipe coupling
Flow restriction elements, each DN100 and DN200
- throttle valve
- iris diaphragm
Filters, each DN100 and DN200
- pocket filter
- filter cartridge
Measuring ranges
- pressure: 0…200Pa / 0…2000Pa
- velocity: 0,25…30m/s
- power: 0…5,75kW
230V, 50Hz, 1 phase
230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase
- experimental setup for training in ventilation engineering
- radial fan, on mobile frame, to connect air ducts
- air ducts from galvanised folded spiral-seam pipe with pipe bends, joints and components
- pressure measuring connections with variable locations
- 6 assembly stands to attach the air ducts
- inclined tube manometer and digital manometer for 2 different measuring ranges
- measuring of the air velocity by anemometer
- switch cabinet with display of power consumption
- plan, setup and test air duct systems
- typical components of ventilation technology
- measure the flow rate and velocity of the air
- measure dynamic and static pressures
- determination of the pressure loss via different components: pipe bends, angles, distributors etc.
- recording of system characteristics
- recording of the fan characteristic
- determination of the operating point
- calculate the electric capacity of the fan motor with regard to current and voltage
- calculate the fan efficiency