Home           Products           Company           Contact us     
> Fundamentals of Thermodynamics
> Applied Thermodynamics
> Renewable Energies
> Power Engines and Machines
> Internal Combustion Engines
> Refrigeration and Air Conditioning Technology
> Heating and Ventilation in Buildings
> Sanitary Systems
Products  |  Thermal Engineering and HVAC  |  Fundamentals of Thermodynamics  |  WL 375
WL 375 Advanced Conduction Unit Show data sheet (pdf file) Print page
Technical Description

In this experimental unit, a metal test bar is clamped between a heater and a Peltier element as the cooler. The complete arrangement is under an evacuated bell jar. In this way errors due to convection can be ignored and all the heat must flow through the test bar.

  The thermal conductivity can be calculated from the temperature difference between the hot and cold end and the heating capacity.

  The housing contains the vacuum pump and the digital displays. The measured values can be read on digital displays. At the same time, the measured values can also be transmitted directly to a PC via USB. The data acquisition software is included.

Learning Objectives / Experiments

- Determination of thermal conductivity for various

- Thermal energy balance of heat source and heat


* Linear heat conduction in metal test bars1
* Simple and clear layout of the system1
* Experiments are visible under a bell jar
Alternative products
WL 372 -- Heat Conduction Unit 
WL 374 -- Heat Conduction in Solids
WL 376 -- Thermal Conductivity of Building Materials
WL 900 -- Heat Conduction Trainer

[1] Study of linear thermal conduction in metal test bars under vacuum
[2] Bell jar, diaphragm pump and manometer to generate a vacuum
[3] Test bar clamped between a heater and a Peltier element as the cooler
[4] Test bars made of stainless steel, brass, aluminium, copper
[5] 2 thermocouples to measure the temperature at both ends of the test bar

[6] Measurement of current and voltage of the heater

[7] Measurement of current and voltage of the peltier element

[8] Digital displays for temperatures, current, voltage
[9] LabVIEW software for data acquisition via USB under Windows XP or Windows Vista


Technical Data

Diaphragm pump

- power consumption: 90W

- vacuum: max. 10mbar abs.

- suction capacity: 6L/min

- power: 1.5W
Peltier element

- power: 8.5W

- temperature difference: 70K
Test bars

- diameter: 5mm

- length: 128mm

- measured length: 80mm 

- material: stainless steel, brass, aluminium, copper

Measuring ranges

- temperature: 2x 0...200C

- voltage: 2x 0...10VDC

- current: 1x 0...1A, 1x 0...5A

- manometer: -1...0bar

Dimensions and Weight
l x w x h: 600 x 490 x 580 mm
Weight: approx. 27 kg
Required for Operation
230V, 50/60Hz, 1 phase or 120V, 60Hz, 1 phase
Scope of Delivery

1 experimental unit

4 test bars

1 tube with heat-conductive paste

1 LabVIEW software CD + USB cable

1 manual

Order Details
060.37500  WL 375  Advanced Conduction Unit
© 2005 G.U.N.T. Gerätebau GmbH