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 Products:  Thermodynamics, Heating and Sanitary Systems » Fundamentals of Thermodynamics » Principles of Heat Transfer » WL 373
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WL 373: Heat Conduction in Gases and Liquids

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Heat Conduction in Gases and Liquids

Heat Conduction in Gases and Liquids

Product Details

Technical Description 
This benchtop unit enables experiments to be performed on steady-state thermal conduction in liquid and gaseous materials. It comprises a cylindrical heat exchanger with a heated inner cylinder made of aluminium and a water-cooled jacket. The medium for the experiment is fed through a gap. The gap between the two elements was selected so that the transfer of heat due to convection can be ignored. Due to the low temperatures and the polished surfaces, the radiation portion of the heat transfer is also negligible. Thermocouples measure the temperature difference.
A supply of cooling water is required.
Learning Objectives / Experiments 
- Steady-state heat conduction in gases and liquids
- Determination coefficients of thermal conductivity
  (e.g. water, oil, air, O2, CO2, steam)
* Simple experimental set-up to investigate the thermal
  conduction of liquids and gasses

[1] Experimental set-up to study the thermal conduction of gases and liquids
[2] Experiments in annular gap formed by 2 concentric cylinders
[3] Experimental media water, oil, air
[4] Radiation portion of heat transfer negligible due to low temperatures and polished surfaces
[5] Adjustable electric heater
[6] Manual valves for flow control (cooling water, medium to be investigated)
[7] Measurement and control unit with digital displays for temperature difference and heater power
[8] 230V, 50/60Hz, 1ph. or 120V, 50/60Hz, 1ph.

Technical Data
Heat exchanger:
- effective heat transfer area: 0.15m²
- mean effective diameter: 39.6mm
- gap width: 0.4mm
Heater, max. power consumption 160W, switch-off at 95°C
2x thermocouple type K
Measuring ranges:
- temperature: 0...100°C
- power: 0...600W

Dimensions and Weight
l x w x h : 250 x 400 x 150 mm (basic unit)
l x w x h : 350 x 130 x 250 mm (measuring unit)
Weight : approx. 15 kg

230V, 50/60Hz, 1ph. or 120V, 50/60Hz, 1ph.
Cooling water connection

Scope of Delivery
1 basic unit, 1 measuring amplifier, 1 instruction manual

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Grindelallee 188, 20144 Hamburg / Germany
Tel.: + 49 (0) 40 343453 |  Fax: +49 (0) 40 63657075
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