Pune, Maharashtra, India
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Extended surface or Fins are used to increase the heat transfer rate from surface to fluid wherever it is not possible to increase the value of the surface heat transfer coefficient. The design of fins therefore requires knowledge of temperature distribution in fin. The main object of this setup is to study the temperature distribution in a simple Pin-Fin. The apparatus consists of a fin of circular cross section fitted across a duct. Duct is connected to suction side of a blower and air flows past to fin perpendicular to its axis. One end of fin is heated by band heater. Thermocouples are placed along the length of fin to measure temperature distribution along the length. Air flow through blower is measured by an orifice meter. Heat input to fin can be measured by Digital voltmeter and ammeter is and controlled by dimmer stat. Students can conduct experiment in natural or forced convection by varying heat input, air flow rate and fin material. Specifications: Fins -12 mm.dia., one each made of Brass, Aluminum and M.S. Duct - 125 X 100 mm cross section. Blower of suitable capacity. Orifice meter with manometer. Thermocouples - 6 No.s Band Heater Instrumentation & Controls : Digital Voltmeter - 0 - 199.9 Volts. Digital Ammeter - 0 - 1.999 Amp. Multy channel Digital Temperature Indicator. Heater Control. Service Required : 230 V.A.C. stabilized supply with earthing. Floor space - 1.5 m X 1.5m at working height.
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