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Teaching suggested applications*

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

-          Visualization of the implementation of the system

-          Visualization of the transformation of the refrigerant through glass shell (evaporation and condensation)

-          Power on, use and settings

-          Measurement of various operating parameters (electric consumption, temperature of  refrigerants and of water, pressures)

-          Energy efficiency analysis of the system and drawing of the thermodynamic cycle on the enthalpy diagram

Description

The CRD400 bench allows the study of refrigeration cycle.

The bench is made of standard elements of a refrigerating circuit. The compressor will first elevate the pressure and the gas temperature (R134a). The water condenser will then transform this high pressure gas into high pressure liquid. The 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 receiver and then be sent towards the expansion valve. This one will change the state of the fluid, it will change from a high pressure liquid to a low pressure mix (liquid+vapor). This low pressure mix is now in the evaporator and will draw its energy on the water coil (and thus cooling it). The 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 low pressure vapor, it goes through a suction line accumulator and will be compressed once again by the compressor.

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 a 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. Hermetic reciprocating compressor 408W - 7.2 °C / 55 °C

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

3. HP and LP safety pressure switch

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

5. Safety valve set to 16 bars

6. Exchangers (X2):

     - Resistant shell glass (pressure and temperature)

     - Copper coil

     - Volume of the exchanger: 1.19L

     - Fluid circulation between the shell and the coil

     - Rear lighting  by LED lamps (improves the visualization)

• Electrical supply: 230 Vac – 50 Hz – 10 A
• Electrical network: 1 live(s) + Neutral + Earth.
• Water tank volume: 70L
• Dimensions:  (LxWxH mm): 1000 x 800 x 1510
• weight (Kg): 110