Trainer For The Study Of A Commercial Multiple Evaporator Refrigerator Refrigeration Trainer Didactic Equipment

DEV-M Trainer For The Study Of A Commercial  Multiple Evaporator Refrigerator Refrigeration Trainer Didactic Equipment

The trainer, properly designed for educational aims, allows the student to study the operation of a commercial refrigerator with two evaporators, one hermetic compressor and one air condenser.
TRAINING PROGRAM
• Plant starting and verification of the safety devices intervention
• Study of the operation of a thermostatic expansion valve
• ON/OFF control
• Analysis of the system behaviour at variation of:
- Number of evaporators
- Condenser / evaporators air flow
- Thermostatic valves superheat
• Drawing the cycle in the pressure – enthalpy diagram of the refrigerant gas
• Data collection and calculation of:
- thermal balances at the evaporators, condenser, compressor
- refrigerant mass flow

- ideal and real EER
- compressor volumetric efficiency
- thermostatic valve superheat
TECHNICAL SPECIFICATIONS
• Steel structure on wheels, painted and treated in the oven
• Silk-screened coloured synoptic panel with LEDs
• Hermetic compressor
• Forced air condenser with variable air flow
• 2 forced air evaporators with variable air flow
• Liquid receiver, liquid separator
• Manual valves, sight glass, dehydrating filter, solenoid valves
• Thermostatic expansion valves
• Plant vacuum, gas charge and recovery valve
• Control thermostats
• Complete set of instruments for data acquisition including:
- Flowmeter

- High and low pressure gauges
- 4 digital thermometers with Pt100 probes to be inserted into different test point along the hydraulic circuit.
- digital multimeter
• Double pressostat
• Thermomagnetic - earth leakage control button
• Emergency button
Power supply: 230 Vca 50 Hz single-phase - 1500 VA (Other voltage and frequency on request)
Dimensions: 180 x 80 x 180 cm
Net weight: 182 kg
Supply with 
THEORETICAL – EXPERIMENTAL HANDBOOK