DESCRIPTION:
The setup is designed and fabricated to study lagging phenomenon in case of pipes. It consists of three concentric pipes of small thickness as compared to diameter and are arranged concentrically, and closed with the help of two discs. Two different insulating materials fill the annuli between the cylinders. Temperature Sensors are fitted to measure the temperature of pipe walls for radial outward heat flow measurement. Inside the inner pipe, a Nichrome wire heater is placed axially. Heat input to the heater is given through a variac and measured by Digital Voltmeter and Digital Ammeter.
EXPERIMENTATION:
To estimate the actual rate of heat transfer through the composite cylinders from the measured Interface temperature of the two insulating materials with known thermal conductivities.
To determine the effective thermal conductivity of the composite cylinder.
To compare the theoretical temperature profile within the composite cylinders, with that of observed profile.
UTILITIES REQUIRED
Electricity Supply: 1 Phase, 220 V AC, 2 Amp.
Table for set-up support.
TECHNICAL DETAILS
G.I. Pipe Inner 5 cm dia. Approx.
G.I. pipe middle10 cm dia. Approx.
G.I. Pipe outer 15 cm dia. Approx.
Length of Pipes 60 cm Approx.
Heater Nichrome Wire
Control panel comprising of
Digital Voltmeter0-300 Volt. (Nutronics Make)
Digital Ammeter0-2 Amp. (Nutronics Make)
Variac 0-230 V, 2 Amp.
Digital Temp. Indicator 0-2000C, with multi-channel switch. (Nutronics make)
Temperature Sensors RTD PT-100 type (6 Nos).
With standard make On/Off switch (L & T make), Mains Indicator etc.
Instruction Manual An ENGLISH instruction manual will be provided along with the Apparatus
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