Free and forced convection
Calculation of convective heat transfer at different geometries: flat plate, cylinder, tube bundle
Features

• free 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

• 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 8.1, 10

Technical data
Air duct
• flow cross-section: 120x120mm
• height: approx. 0,6m
Heating elements, temperature limitation: 90°C 
• tube 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