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Teaching suggested applications*

-          Identification of the components of a refrigerating system with two stage compressor

-          Commissioning and verification of operation

-          Study of the basic concept of a refrigeration installation R404A, with two stages.

-          Study of the thermodynamic cycle on enthalpic diagram.

-          Calculation of cooling power to the condenser and evaporators.

-          Overall efficiency of the unit.

-          Preventive and curative maintenance

-          Study of oil circuit

Description

The BIE100 bench allows the study of a low pressure refrigeration cycle with two-stage compressor.

The system allows viewing the two compression stages and validates the difference in performance compared to a conventional compressor. Students will start up the system and do temperature readings with different operating modes.

They will analyze the data and understand what is the influence of the different components on the system.

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

Its anodized aluminum structure on wheels makes it extremely robust as well as great flexibility of integration into your premises. The manufacturing of this equipment meets the European machine directive.

1. Semi-hermetic compressor accessible two-stage

     Industrial type

     Refrigerant: R404A

     Condensing temperature + 35°C

     Evaporating temperature -35°C

     Cooling capacity: 6210 W

1. Oil Separator
2. Air condenser
3. Liquid receiver with service valve
4. Brazed plate exchanger
5. Drier filter
6. Sight glass
7. An electromagnetic valve
8. Refrigerant flowmeter 40-400kg/h  with bypass valve

10. Thermostatic expansion valve with external equalizer

11. Evaporator with forced ventilation of ceiling type.                The evaporator is installed in a cold chamber of interior dimensions of 1230x1030x2030mm. The chamber is equipped with standard components (anti panic bar, valve ...). The load is simulated by electrical heater of 2000W with ON/OFF thermostat

12. Suction line accumulator. 

13. Safety valve

14. High pressure, medium pressure and low pressure gauge with dual scale pressure temperature

15. Low pressure switch (control pump down)

16. Combined pressure switch HLP (safety)

17. High pressure switch (control of the condenser fan)

18. Oil differential pressure switch

Structure:

all the components are assembled on a screwed anodized aluminium profile structure equipped with directional wheels with brake

Electric box:

The electrical enclosure is made according to the European standards. It includes safety elements such as GFCI, main switch, emergency stop button, earthing, start buttoning ...

It is equipped with a touch screen 7 "which displays the temperatures, the electric power consumed, the pressures and the fluidic diagram of the machine

A refrigeration temperature controller manages the operation of the unit, the regulation of the temperature of the cold room and the defrosting phases

• Power supply: 400Vac – 50 Hz – 25 A
• Power supply type: 3 phase(s) + Neutral + Earth.