B500 Ventilation Trainer

B500 Ventilation Trainer

For studying the parameters influencing air flow in ducts and the methods of designing and commissioning such systems. The unit enables students to undertake the balancing of a realistic air distribution system and to investigate:

  1. Typical fabrication and construction methods used in air distribution ducting.
  2. Pressure losses and loss coefficients in different ducts and components including velocity effects.
  3. Fan pressure and volume flow characteristics.
  4. Standard types of panel and bag filters including pressure drop against velocity.
  5. Methods of measuring airflow rates in ducts and from outlet diffusers.

The flexible design means that the unit can be configured to fit almost any laboratory and the experimental capabilities can be further enhanced by additional ducting kits and ductwork leakage testers available as optional items

B500 Ventilation Trainer

A realistically scaled ventilation training unit capable of enabling students to study both basic airflow and fluid mechanics as well as the more complex process of commissioning and balancing a multi-ducted air distribution system.

 The unit consists of a forward curved variable speed centrifugal fan and integral control console together with a rectangular air intake and filter holder.

 The fan has a supply pressure of up to 350Nm-2 and a flow rate of approximately 1400m3h-1 depending upon the blockage factor.

 The fan discharges directly into a 200mm dia. galvanised steel duct and this connects directly to the distribution ductwork.

 Sufficient components are supplied with the unit to enable parallel branch and line balancing experiments to be undertaken.  A minimum of 6 air supply points are provided that may be balanced on the assembled unit to supply a range of airflows.

 A portable manometer, pitot static tube and hand held anemometer allow a large range of experiments to be undertaken.

 B500B (Optional Extra)

The optional extra duct configuration B500B allows the addition of a third parallel branch and two air supply units.

 B500C (Optional Extra)

The optional extra duct configuration B500C allows the addition of a 6m branch and two air supply units.

 B500D (Optional Extra)

Optional Extra B500D Ductwork leakage tester allows investigation of the structural integrity of the ductwork

The standard package B500 enables the following training exercises to be undertaken:

  • Examination of typical components, fabrication, installation and assembly techniques used in air handling systems.
  •  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.
  •  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.
  •  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.
  •  Addition of the B500B (see diagram) allows an additional parallel branch and two diffusers to be investigated.
  •  Addition of the B500C (see diagram) allows an additional tee branch and two diffusers to be investigated.
  •  Addition of the B500D Ductwork Leakage Test Set allows students to carry out commissioning leak testing on all of the above components


A: 1.5kW Single Phase, 220-240 Volts, 50Hz (With earth/ground)


 B: 1.5kW Single Phase, 110-120 Volts, 60Hz (With earth/ground).