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 WL 373 Heat Conduction in Gases and Liquids
 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)
 Features
* Simple experimental set-up to investigate the thermal
conduction of liquids and gasses
 Specification [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: 0.4mmHeater, max. power consumption 160W, switch-off at 95°C2x thermocouple type KMeasuring 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 Connections 230V, 50/60Hz, 1ph. or 120V, 50/60Hz, 1ph.Cooling water connection Scope of Delivery 1 basic unit, 1 measuring amplifier, 1 instruction manual Order Details 060.37300  WL 373  Heat Conduction in Gases                      and Liquids