Heat Transfer by Convection & Radiation Model TH 104

* Heat transport between heating element and vessel wall by convection and radiation

* software for data acquisition

Item Description

Under real conditions, the heat transport between two objects is normally substance-bound, i.e. convection and/or heat conduction, and not substance-bound, i.e. radiation, at the same time. Determining the individual heat quantities of one type of transfer is difficult. Sci-tech Heat Transfer by Convection & Radiation Model TH 104 trainer enables users to match the individual heat quantities to the corresponding type of transfer. The core element is a metal cylinder in a pressure vessel. A temperature-controlled heating element is located at the centre of the cylinder. Sensors capture the wall temperature of the cylinder, the heating temperature and the heating power. This metal cylinder is used to examine the heat transfer between the heating element and the vessel wall.

Technical Specifications

[1] heat transfer between heating element and vessel wall by convection and radiation

[2] operation with various gases possible

[3] experiments in vacuum or at a slight positive gauge pressure

[4] electrically heated metal cylinder in the pressure vessel as experimental vessel

[5] temperature-controlled heating element

[6] vacuum generation with rotary vane pump

[7] instrumentation: 1 temperature sensor at the heater, 1 temperature sensor at the vessel wall, 1 power sensor at the heating element, 1 Pirani pressure sensor, 1 piezo-resistive pressure sensor

[8] digital displays for temperature, pressure and heating power

[9] software for data acquisition via USB under Windows Vista or Windows 7

Technical Specifications

Heating element – output: 20W

– radiation surface area: approx. 61cm²

Pump for vacuum generation

– power consumption: 370W

– nominal suction capacity: 5m³/h

– final pressure with gas ballast: 20*10-3mbar

– final pressure without gas ballast: 5*10


Measuring ranges

– negative pressure: 0,5*10-3…1000mbar

– pressure: -1…1,5bar rel.

– temperature: 2x 0…200°C – output: 0…20W