Principles of air flow Recording the fan characteristic Features - wide range of accessories for basic experiments with air flow - record a fan characteristic Learning objectives/experiments - recording a fan characteristic - in conjunction with the power meter HM 240.02 -- determining the fan efficiency - in conjunction with corresponding accessories -- velocity distribution in the pipe -- velocity distribution behind a cylinder subject to transverse incident flow -- pressure distribution around a cylinder subject to transverse incident flow -- friction losses in pipes, pipe bends and pipe angles -- recording the cooling curve of a copper cylinder subject to incident flow -- determining the heat transfer coefficients from the cooling curve Specification [1] investigation of the principles of air flow [2] transparent intake pipe with mounting options for additional accessories [3] inlet contour minimises turbulence on the intake side [4] throttle valve on the delivery pipe to adjust the air flow [5] electronic measurement of temperature and pressure [6] determine velocity by means of the dynamic pressure [7] determine flow rate via differential pressure [8] GUNT software for data acquisition via USB under Windows 10 Technical data Radial fan - max. power consumption: 90W - speed: 2800min-1- - max. flow rate: 460m3/h - max. differential pressure: 480Pa Delivery pipe - outer Ø: 110mm - inner Ø: 99,4mm Intake pipe - outer Ø: 140mm - inner Ø: 134,4mm Measuring ranges - pressure: 1x ±10mbar - pressure: 2x ±1mbar - temperature: 0...200°C 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 850x450x600mm Weight: approx. 23kg