Computerized Stefan Boltzman Apparatus

Product Code LTEKCTLB-HET08-15006

Description & Specification

Computerized Stefan Boltzman Apparatus

The heat transfer trainer enables users to match the individual heat quantities to the corresponding type of transfer. The core element is a heated metal cylinder located at the center of the pressure vessel. The surface temperature of the heated metal cylinder is controlled. Temperature sensors measure the surface temperature of the metal cylinder and the wall temperature of the pressure vessel. In addition to the heating power of the metal cylinder, it is possible to study the heat transport from the metal cylinder to the wall of the pressure vessel.

The pressure vessel can be put under vacuum or positive gauge pressure. In the vacuum, heat is transported primarily by radiation. If the vessel is filled with gas and is under positive gauge pressure, heat is also transferred by convection. It is possible to compare the heat transfer in different gases. In addition to air, nitrogen, helium, carbon dioxide or other gases are also suitable.

A rotary vane pump generates negative pressures down to approx. 0,02mbar. Positive gauge pressures up to approx. 1bar can be realized with compressed air. Two pressure sensors with suitable measuring ranges are available for the pressure measurement: a Pirani sensor measures the negative pressure while a piezo-resistive sensor measures the positive pressure.

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, where they can be analyzed with the software.

FEATURES

Experiments in vacuum
- Heat transfer by radiation
- Determination of the radiation coefficient
Experiments at ambient pressure or positive gauge pressure
- Heat transfer by convection and radiation
- Determination of the heat quantity transferred by convection
- Determination of the heat transfer coefficient based on measured values
- Theoretical determination of the heat transfer coefficient based on the Nusselt number
- Comparison of the heat transfer in different gases
- Heat transport between heating element and vessel wall by convection and radiation
- Heating element

SPECIFICATION

Output: 20W

Radiation surface area: approx. 61cm²

Pressure vessel

Pressure: -1…1,5bar

Volume: 11L

Pump for vacuum generation
Power consumption: 250W
Nominal suction capacity: 5m³/h
Final pressure with gas ballast: 3*10^-3mbar
Final pressure without gas ballast: 3*10^-3mbar
Measuring ranges
negative pressure: 0,5*10^-3…1000mbar

Pressure: -1…1,5bar rel.

Temperature: 0…250°C

Power: 0…23W

Required for Operation

230V, 50Hz, 1 phase
230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase

DIMENSIONS AND WEIGHT

LxWxH (approx.): 1400x800x1500mm
Weight (approx.): 130kg

Trusted Computerized Stefan Boltzman Apparatus Manufacturer & Supplier

LTekOnline are the manufacturers of Computerized Stefan Boltzman Apparatus used to demonstrate engineering principles in Engineering Colleges, Engineering Schools, and Heat and Mass Transfer Lab Equipment for Engineering Teaching Lab in Universities. We supply Computerized Stefan Boltzman Apparatus to TVET institutes, vocational training centres, polytechnics and research labs across more than 90 countries, with quality testing technology, comprehensive operation manuals and full after-sales support.

Manufactured to international standards

Detailed operation & experiment manuals

Turnkey lab installation & training

Worldwide shipping & on-site support