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 - E-Learning: multi-media didactic materials accessible online Learning objectives/experiments - free and forced convection - calculation of convective heat transfer at different geometries -- flat plate -- cylinder -- tube bundle - experimental determination of the Nusselt number - calculation of typical characteristic variables of heat transfer -- Nusselt number -- Reynolds number - investigation of the relationship between flow formation and heat transfer during experiments - description of transient heating process - E-Learning -- multi-media online course, which enables learning independent of time and place -- access via Internet browser -- educational software including different learning modules -- course in the fundamentals -- detailed thematic courses -- check through targeted review of the learning objectives -- authoring system with editor that enables you to integrate your own, local content into the educational software Specification [1] investigate heat transfer in the air duct by forced convection [2] study of free convection [3] air duct with axial fan [4] 4 heating elements with different geometries [5] continuously adjustable heating and fan power [6] display of temperatures, heating power and air velocity in the software [7] due to integrated microprocessor-based instrumentation no additional devices with error-prone wiring are required [8] functions of the software: system operation, data acquisition, educational software [9] network capability: LAN/WLAN connection of any number of external workstations with software for observation and evaluation of the experiments [10] E-Learning: online multi-media didactic materials [11] 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 - 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 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 670x350x880mm; Weight: approx. 25kg
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