Heat conduct in Metals
WL 420
Function
The upper region of metallic samples is heated by an electrical heater and the lower section is cooled by a Peltier element. This results in a heat flux from the hot side to the cold.
A certain temperature difference is required to maintain the heat flux, depending on the thermal conductivity and length of the sample. The temperature difference is measured and is an indicator for the thermal conductivity. The various metallic materials make it possible to determine different thermal conductivities. Materials consisting of several layers can also be investigated. To do this, two different samples are arranged in series.
Accurate measurement
thermal disturbance variables are minimised
Quick experiments
the required temperature difference is quickly reached thanks to active cooling
no cooling water is required
Specifications
investigation of the thermal conductivity of different metals
continuously adjustable heater
Peltier element as cooler
11 samples made of 5 metals, different lengths
display of temperatures and power consumption in the software
due to integrated microprocessor-based instrumentation no additional devices with error-prone wiring are required
functions of the GUNT software: system operation, data acquisition, educational software
network capability: LAN/WLAN connection of any number of external workstations with GUNT software for observation and evaluation of the experiments
E-Learning: multi-media didactic materials accessible online
Learning objectives/ experiments
time dependency until the steady state is reached
calculate the thermal conductivity λ of different metals
calculate the thermal resistance of the sample
heat transfer with different samples connected in series
effect of sample length on heat transfer
GUNT-E-Learning
multi-media online course, which enables learning independent of time and place
access via Internet browser
educational software including different learning modules
course in the fundamentals
detailed thematic courses
check through targeted review of the learning objectives
authoring system with editor that enables you to integrate your own, local content into the educational software
Features
effect of different metals on heat conduction
network capability: network access to ongoing experiments by any number of external workstations
GUNT software: operation and control of the experimental unit, data acquisition and educational software
E-Learning: multi-media didactic materials accessible online
Technical data
Peltier element
cooling capacity 56,6W
Heater
heating power 30W
temperature limitation: 150°C
Samples Ø 20mm
Length between measuring points
5x 20mm (copper, steel, stainless steel, brass, aluminium)
5x 40mm (copper, steel, stainless steel, brass, aluminium)
1x 40mm with turned groove (aluminium)
Measuring ranges
temperature: 5x -25…325°C
heating power: 0…50W
230V, 50Hz, 1 phase
230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase
UL/CSA optional
Dimensions and weight
LxWxH: 670x350x480mm
Weight: approx. 18kg
Required for operation
PC with Windows