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Teaching suggested applications*

-          Identification of the components of a refrigeration system with two cold chambers

-          Commissioning and verification of operation

-          Study of the basic concept of a refrigeration system with R448A inside and with double evaporation.

-          Study of the thermodynamic cycle on enthalpy diagram.

-          Calculation of refrigerating capacities to the condensers and evaporators.

-          Overall performance of the unit.

Description

Multiple evaporation cooling unit comes complete with technical manual and practical work. It is suitable for different levels and fields of studies. Design, manufacturing and industrial equipments. Using R449A refrigerant meets the new standards of refrigerants.

The robust design of this device makes it suitable for use in schools.
The equipment is set up on an anodized aluminium frame on casters wheels. This gives it great strength and a flexibility of integration into your premises.The manufacturing of this equipment meets European machine directive

1. Hermetic compressor

Refrigerant R448A

Cooling capacity: 1419 W

Evaporation temperature -20°C

Ambient temperature +32°C

1. Air condenser

Fan flow rate: 900 m³/h

Electric power: 30 W

1. Receiver

Capacity : 2.35 dm³

service valve

1. Dehydrator filter
2. Sight glass
3. Bottle exchanger between the high-pressure liquid and low-pressure steam with injection
4. solenoid valve (x2)
5. Thermostatic expansion valve with internal equalization (x2)
6. Air evaporator with forced convection (x2)

Copper tube - aluminum fins

Cooling capacity : 665 W for dt 8°C

10. Constant pressure valve at the outlet of each evaporator (2)

11. Check valves at the outlet of each evaporator

12. Manual valve bypass of each constant pressure valve

13. Low pressure manometers (1 for each evaporator and at the compressor suction)

14. Low pressure switch

15. Low pressure and high pressure switch

16. High pressure switch

17. High pressure manometer at the compressor outlet

1. 18.  Cold room divided into two sections with a door for each section. Each section is 0.46m³. The walls of the cold rooms are made of 60mm thick insulation material.

The bench is provided with a portable thermometer equipped with two wired thermocouple probes and contact probe

• Electrical supply : 230 Vac – 50 Hz – 20 A
• Electrical network : 1 phase(s) + Neutral + Earth.