HEAT TRANSFER BY NATURAL AND FORCED CONVECTION 
Features

• ree and forced convection using the example of various heating elements

• network capability: network access to ongoing experiments by any number of external workstations

• software: operation and control of the experimental unit, data acquisition and educational software

Specification

• part of the Fundamentals of heat transfer

• investigate heat transfer in the air duct by forced convection

• study of free convection

• air duct with axial fan

• 4 heating elements with different geometries

• continuously adjustable heating and fan power

• display of temperatures, heating power and air velocity in the software

• due to integrated microprocessor-based instrumentation no additional devices with error-prone wiring are required

• functions of the software: system operation, data acquisition, educational software

• network capability: LAN/WLAN connection of any number of external workstations with software for observation and evaluation of the experiments 

• E-Learning: online multi-media didactic materials 

• software for data acquisition via USB under Windows 10

Technical data
Air duct

• flow cross-section: 120x120mm

• height: approx. 0,6m

• Heating elements, temperature limitation: 90°C 

• ube bundle

• number of tubes: 23

• one tube in variable position is heated

• heating power: 20W

• heat transfer area: 31,41cm2

• cylinder with an even temperature at the surface

• heating power: 20W

• heat transfer area: 111cm2

• plate

• heating power: 40W

• heat transfer area: 2x 100cm2

• cylinder with heating foil to investigate the local heat transfer

• heating power: 40W

• heat transfer area: 111cm2

Axial fan

• max. flow rate: 500m3/h

• max. pressure difference: approx. 950Pa

• power consumption: 90W

Measuring ranges

• air velocity: 0...10m/s

• temperature: 4x 0...325°C

• heating power: 0...50W

• 230V, 50Hz, 1 phase