Geneq > Teaching Equipment > Thermodynamics

Demonstration of Boiling
Model PBE 010


  • Hot water is pumped through the external tube of a glass concentric-heat exchanger. This heat is exchanged with the refrigerant found in the internal tube, causing it to boil. The tube containing the refrigerant is partially evacuated and the heat absorbed creates natural convection currents in the liquid. The translucent exchanger enables the observer to see the change in phase from liquid to vapour during the heating process.
  • The unit PBE 010 is delivered complete with instrumentation along with a technical manual and instructions.
UTILITIES
 230 V single-phase - 50 Hz – 0.5 kW
Water : 0.15 m3/h (refrigeration) 0.5 m3/h (vacuum pump) 2 bars

DIMENSIONS
Length : 450 mm Width : 630 mm Height : 620 mm Weight : 40 kg

Application
  • Observation of the change in phase from liquid to vapour while heating the refrigerant.
  • This unit permits observation of
    • convection currents
    • heat transfer
    • various states of the refrigerant from supercooled liquid to overheated vapour
  • Observation of the disruptive effect of air in a condenser

Specifications
  1. Glass concentric tube exchanger
  2. Pump and thermoregulator 500 W
  3. Refrigerating fluid tank with water condenser
  4. Air ejector with fountain (vacuum pump) 5. Control valve for the condenser water flow rate
  5. Emptying and vacuum valve
  6. Safety valve
  7. Manometer
  8. Flow rate valve of the refrigerant