Product Description

The Stefan Boltzmann constant is an important constant in heat transfer. The ‘Swarg Systems & Instruments’ apparatus determines Stefan Boltzmann constant. The apparatus consists of a hemisphere surrounded by hot water. Hot water is obtained from a water-heating tank. When the blackened disc is inserted at the center of hemisphere, heat is transferred to the disc from hemisphere by radiation and its temperature begins to rise, and from temperature rise rate. (It is measured at the intervals of 5 sec.) Stefan Boltzmann constant is determined.

SPECIFICATIONS

1) Water heating tank provided with electric immersion heater.
2) Hemisphere made of copper sheet, 200mm. dia. surrounded by water jacket of 250mm. dia.
3) Test disc made of copper 20mm. dia. provided with thermocouple at the center.
4) Multi channel digital temperature indicator 0-200 0C with 0.1 0C least count to measure the temperature of hemisphere and disc.
5) Audible buzzer with timer to ring at every 5 seconds.
A technical accompanies the unit.
The unit provided with an attractive powder coating.

SERVICES REQUIRED
1) Bench area of about 1m. x 0.5m. at working height .
2) 230v, 15A, AC, electric supply with earthing connection.