Quick Answer: Composite Walls Apparatus finds the thermal conductivity and resistance of a composite wall formed by M.S., Bakelite and brass/aluminum plates of 250 mm dia., placed in series on either side of a 250 mm mica heater. A dimmerstat, voltmeter, ammeter and multichannel digital temperature indicator are provided.
Last updated: October 2026
Key Features
M.S. plates, 25 mm thick, 250 mm dia. (2 nos.)
Bakelite plates, 10 mm thick, 250 mm dia. (2 nos.)
Brass/aluminum plates, 15 mm thick, 250 mm dia. (2 nos.)
Unit clamped in a frame and viewed through a Perspex sheet
Thermocouple tappings for temperatures at various points
Technical manual supplied
Technical Specifications
Specification
Value
Heater
Mica heater, 250 mm dia.
M.S. plates
25 mm thick, 250 mm dia., 2 nos.
Bakelite plates
10 mm thick, 250 mm dia., 2 nos.
Brass/aluminum plates
15 mm thick, 250 mm dia., 2 nos.
Dimmerstat
2 A capacity
Measurements
Voltmeter and ammeter for input power; multichannel digital temperature indicator
Supply
230 V A.C. stabilised, with earthing connection
About This Product
Heat from the central mica heater passes through the plates arranged in series on each side, and the thermocouple tappings give the temperatures at various points through the wall. From the measured input power and these temperatures, students work out the conductivity and resistance of the composite wall in a HEAT TRANSFER LAB conduction experiment.
Frequently Asked Questions
Q1. Which materials make up the composite wall? Pairs of M.S. plates (25 mm), Bakelite plates (10 mm) and brass/aluminum plates (15 mm), all 250 mm in diameter, arranged in series on either side of the heater.
Q2. What is measured on the composite walls apparatus? Input power with a voltmeter and ammeter, and temperatures at various points with a multichannel digital temperature indicator through the thermocouple tappings.
Our export customers include schools, colleges and dealers in Bulgaria, Cameroon and Georgia.
