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Emissive Power of Hot Bodies Training System
(HT - 009)

1 Radiation cube 2 Heater 3 Thermocouple 4 Slider 5 Heater Power 6 Control panel 7 Thermopile

  • Determination of the thermoelectric voltage at a constant temperature.
  • Determination of the temperature dependence of the thermoelectric voltage.
  • Measurement of the room temperature before starting the experiment.
  • Determination and comparison of the emittance for all four sides of the Leslie cube at a constant high temperature.
  • The thermal radiation of a cube filled with boiling water is measured with a Moll-type thermopile.
  • Determination and comparison of the emittance for all four sides of the Leslie cube depending on the temperature.
  • Plotting the thermoelectric voltage Vin as a function of the absolute temperature for each side of the cube and validation of Kirchhoff’s law of thermal radiation for the used Leslie cube with the collected data.
  • Digital multimeter
  • Stirrer for Leslie cube
  • Immersion heater: 1 KW, 220 V, single phase Universal measuring amplifier for amplification of AC and DC voltages
  • Thermopile with shielding tube:
    • Sensitivity: approx. 0.14µV/µW
    • Internal resistance: approx. 1 Ω
    • Setting duration: 40 s for 95 % of the measured value
    • Rod: approx. 156 mm x 10 mm dia.
    • Dimensions: approx. 94 mm x 40 mm dia.
    • Weight: approx. 200 g
  • Thermocouple:
    • Type-K
    • Range: -50 to +350 °C
  • Emissive Power of Hot Bodies Training System unit (HT - 009)
  • Hard copy user manual
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Emissive power of hot bodies training system (HT – 009) is designed to help trainees to measure the thermal radiation emitted from a hot body and observe the influence of the color and surface texture of the body on the radiation quantity.

  • The trainer unit has a compact bench top design to be suitable for different spaces and to enable ease of use.
  • The trainer is equipped with an immersion heater.
  • The immersion heater is used to heat the Leslie cube to create temperature difference between the body and the surroundings in order to create thermal radiative power.
  • The surroundings temperature and the Leslie cube surface temperature is measured using temperature sensor.
  • the Leslie cube has a stirrer to ensure uniform heat distribution on the surface for accurate reading and measurement to perform the experiment in perfect way.
  • The thermopile is used to measure the thermal radiative energy due to the temperature difference.

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