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Products | Fluid Mechanics and Hydrology | Fundamentals of Aerodynamics and Airflow | HM 230

HM 230

Compressible Flow Unit

Technical Description

The HM 230 unit is a table model with a powerful radial fan and various flow models. Turbulences are minimized as the model is on the intake side of the fan. The manufacture of the flow models in Plexiglass enables the internal arrangement to be clearly seen. Precise and convenient measurements are ensured by means of electronic sensors. The connections from the measuring point to the sensor are made using hoses. The measured values are indicated on digital displays. The fan speed can be adjusted in steps. The educational model is particularly suitable for use in laboratory experiments in higher education.

Learning Objectives / Experiments

· Volume and mass flow determination by means of aperture and nozzle
· Recording of the compressor characteristic curve at varying mass flows and speeds
· Pressure losses in pipes and bends
· Flow in convergent/divergent nozzles
· Supersonic flow in a Laval nozzle
· Determination of the speed of sound

Features

Compact table unit for the investigation of air flows
Enables experiments to be performed up to supersonic flow
Fan with speeds over 40000 rpm
Flow model made of transparent material

Alternative products

HM 172 -- Supersonic Wind Tunnel
HM 220 -- Airflow Study Unit
HM 225 -- Airflow Bench
HM 240 -- Principles of Airflow

Specification

[1] Table unit for differential pressure measurements on flow models
[2] l x w x h 1750x600x365mm, weight 65kg
[3] Radial fan 1.6kW, adjustable speed
[4] Transparent flow model, with pressure measurement connections
[5] 3x model "pipe sections”, measured length 1000mm, diameter 16, 24, 34mm
[6] 1x "90° bend” model
[7] 1x "regulator flap” model
[8] 1x "aperture” model with various inserts, diameter 12, 19, 25, 32mm
[9] models: 1x "nozzle with discontinuous expansion” 1x "nozzle with continuous expansion”

Technical Data

Radial fan, adjustable speed
Speed range: 8000 – 45000rpm
Max. intake volumetric flow rate: 206m3/h
Max. delivery pressure: 271mbar
Max. power consumption: 1.6kW

Measuring ranges
Speed measurement: 0. .99999rpm
Air speed: 0...65m/s
Pressure measurement: 0-25/200/1000mbar

Dimensions and Weight

l x w x h : 1750 x 600 x 365 mm
Weight : approx. 65 kg

Connections

230V, ~50Hz

Scope of Delivery

1 table unit, complete with models, 1 instruction manual

Order Details

070.23000 HM 230 Compressible Flow Unit