Stefan Boltzmans Apparatus
Product Code : EL-HTL-11089
The Stefan Boltzmann's Apparatus from Lab Exports lets students experimentally determine the Stefan-Boltzmann constant by measuring the rate of temperature rise of a blackened test disc as it receives radiant heat from a hot water-filled hemisphere.
Specifications
| Water Heating Tank | Fitted with electric immersion heater |
| Hemisphere | Copper sheet, 200 mm dia., surrounded by water jacket of 250 mm dia. |
| Test Disc | Copper, 20 mm dia., with thermocouple at centre |
| Temperature Indicator | Multichannel digital, 0-200°C, 0.1°C least count |
| Timer | Audible buzzer, rings every 5 seconds |
| Services Required | 230V, 15A AC supply with earthing; bench area 1m x 0.5m at working height |
Key Features
- Copper hemisphere surrounded by a hot water jacket provides a controlled radiant heat source
- Blackened copper test disc inserted at the centre of the hemisphere receives radiant heat
- Thermocouple at the disc centre tracks temperature rise as heat is absorbed by radiation
- Audible buzzer timer rings every 5 seconds for consistent interval readings
- High-resolution digital temperature indicator (0.1°C least count) for accurate readings
- Direct experimental determination of the Stefan-Boltzmann constant from measured data
Applications
The Stefan Boltzmann's Apparatus is used in heat transfer laboratories to experimentally verify the Stefan-Boltzmann law of radiation, helping students determine the Stefan-Boltzmann constant from the measured rate of temperature rise of a radiatively heated test disc.
Why Choose Lab Exports
Lab Exports is a trusted manufacturer and exporter of engineering lab equipment including a complete range of Heat Transfer Lab apparatus for engineering colleges and technical institutes. Every unit is built for classroom durability, measurement accuracy and long-term reliability, backed by responsive after-sales support.
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Frequently Asked Questions
Q1. What does the Stefan Boltzmann's Apparatus determine?
It determines the Stefan-Boltzmann constant by measuring the rate of temperature rise of a blackened test disc heated by radiation from a hot hemisphere.
Q2. How is the hemisphere heated?
The copper hemisphere is surrounded by a water jacket, heated by an electric immersion heater in the water heating tank.
Q3. How is the disc temperature measured?
A thermocouple at the centre of the copper test disc feeds a multichannel digital temperature indicator with 0.1°C resolution.
Q4. How are readings timed?
An audible buzzer timer rings every 5 seconds to prompt consistent interval temperature readings.
Q5. What utilities are required to operate the apparatus?
It requires a 230V, 15A AC supply with earthing connection and a bench area of approximately 1m x 0.5m.
Request a Quote
For pricing, specifications or export documentation on the Stefan Boltzmann's Apparatus, contact Lab Exports for a detailed quotation.