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Teaching suggested applications*

-          Identification of the components of a heat pump installation water / water reversible

-          Visualization of the implementation of the system

-          Visualization of the processing of the refrigerant through glass grilles (evaporation and condensation)

-          Switching on, use and settings

-          Measurement of various operating parameters (power consumption, temperature of refrigerant and of the water, pressures)

-          Energy efficiency analysis of the system and trace on the refrigerating cycle on enthalpy diagram

-          Study of a reversible system

Description

The CRI 100 bench allows the study of a reversible refrigerating cycle.

The bench is made of standard elements of a refrigeration circuit. The compressor will first elevate the pressure and the gas temperature (R134a). The water condenser will then transform this high pressure gas in the high pressure liquid. Students visualize the transformation because the refrigerant condenses between the glass shell and the cooling coil.

The high-pressure liquid will then be stored in a bottle and then be sent towards the expansion valves. This will change the state of the fluid; it will go from a high pressure liquid to a low pressure liquid. This low pressure liquid is now in the evaporator and will draw its energy to the water coil (and thus cool it). Students visualize the transformation because the refrigerant evaporates between the glass shell and the cooling coil.

At the outlet of the evaporator, the fluid is in the form low pressure steam, it goes through a suction line accumulator and be compressed again by the compressor.

The robust design of this equipment makes it perfectly suited for use in schools.

Its anodized aluminum structure on feet gives it great robustness as well as great flexibility of integration into your premises. The manufacturing of this equipment meets the European machine directive

This unit is set up on a frame made of aluminum profile with 4 wheels. It includes an electrical cabinet with main switch and differential circuit breaker.

1. Piston hermetic compressor 408W for a range 7.2°C / 55°C

2. Low pressure manometer R134a with dual scale temperature / pressure

3. HP and LP safety pressure switch

4. High pressure manometer R134a with dual scale temperature / pressure

5. Safety valve set to 16 bars

6. Exchangers (X2):

     - Resistant glass shell (pressure and temperature)

     - Copper coil

     -Volume of the exchanger: 1.19L

     -Circulation of fluid between the grille and the coil

     -Rear lighting by neon (improves the visualization)

• Electrical supply : 230 Vac – 50 Hz – 10 A
• Electrical network : 1 live(s) + Neutral + Earth.
• Water supply : filling (70L)