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Thermal and electrical conductivity of metals

Product No: P2350200

Principle

The thermal conductivity of copper and aluminium is determined in a constant temperature gradient from the calorimetrically measured heat flow. The electrical conductivity of copper and aluminium is determined, and the Wiedmann-Franz law is tested.

Tasks

Determine the heat capacity of the calorimeter in a mixture experiment as a preliminary test. Measure the calefaction of water at a temperature of 0°C in a calorimeter due to the action of the ambient temperature as a function of time.
To begin with, establish a constant temperature gradient in a metal rod with the use of two heat reservoirs (boiling water and ice water) After removing the pieces of ice, measure the calefaction of the cold water as a function of time and determine the thermal conductivity of the metal rod.
Determine the electrical conductivity of copper and aluminium by recording a current-voltage characteristic line.
Test of the Wiedmann-Franz law.

What you can learn about

Electrical conductivity
Wiedmann-Franz law
Lorenz number
Diffusion
Temperature gradient
Heat transport
Specific heat
Four-point measurement

Materiallist (Excerpt)	Product	Amount
Temperature meter digital, 4-2	13617-93	1
Universal measuring amplifier	13626-93	1
Multitap transformer, 14 VAC/ 12 VDC, 5 A	13533-93	1
Rheostat, 10 Ohm , 5.7A	06110-02	1
Heat conductivity rod, Cu	04518-11	1
Magnetic stirrer Mini / MST	47334-93	1
Temp. probe, immersion type, Pt100, stainless steel, -20...+300°C	11759-01	1
Heat conductivity rod, Al	04518-12	1
Calor.vessel w.heat conduct.conn.	04518-10	1
Tripod base PHYWE	02002-55	1
Digital multimeter 2010	07128-00	2
Calorimeter vessel, 500 ml	04401-10	1
Bench clamp PHYWE	02010-00	1
Support rod PHYWE, square, l = 1000 mm	02028-55	1
Stopwatch, digital, 1/100 s	03071-01	1
Support rod PHYWE,square, l 630mm	02027-55	1
Right angle clamp PHYWE	02040-55	6
Heat conductive paste,50 g	03747-00	1
Immers.heater,300W,220-250VDC/AC	05947-93	1
Universal clamp	37715-00	4
Gauze bag	04408-00	1
Supporting block 105x105x57 mm	02073-00	1
Connecting cord, 32 A, 1000 mm, red	07363-01	1
Glass beaker DURAN®, short, 400 ml	36014-00	1
Connecting cord, 32 A, 500 mm, red	07361-01	3
Connecting cord, 32 A, 500 mm, blue	07361-04	4
Laboratory Experiments Physics, Chemistry, Biology andApplied Sciences, CD-ROM, incl. operating manuals	16502-42	1