Refrigerator Training System Didactic Equipment School Equipment Training Air Conditioner Trainer

1. Scope of Supply
Refrigerator TrainingSystem,including:
Training bench with fullrefrigerationcircuit
Integrated data acquisition system
Licenseddataacquisitionsofware
RFID power management system
Branded desktop computer
Offline UPS
Allinstruments,accessories,and documentation
The system complete,fullyoperational,and ready forinstructionaluse.
2. General Description
TheRefrigeratorTrainingSystemadesktop-typeeducationalunitdesignedforlaboratoystudy
of refrigeration thermodynamics and system performance analysis.
The system enable studentsto:
Observe and analyze refrigeration cyde stages
Plot and interpret pressure-enthalpy (P-h) diagrams
Determine superheating and subcooling
Calculate coefficient of performance (COP)
Compare actual cycle performance with inverse Carnot cycle
Evaluate compressor efficiencies
The refrigerantR134a
3. Mechanical Construction
3.1 Training Bench
Movable aluminum profile structure
Dimensions
1200 (L) × 700 (W) × 1600 (H) mm
Mounted on four (4) castors:
Two (2) with brakes
Two (2) without brakes
Front demonstration board:
Silkscreened refrigeration circuit diagram
Clearly labeled components
Color-coded refrigerant piping (red/blue)
4. Electrical Requirements
Power Suppy:220V±10%,Single Phase,50Hz
RatedCurrent: 10A
ResidualCurrentCircuit Breaker (16A)
Key switch (self-locking)
Emergency stop button (self-locking)
Overload protector (5A)
Indicator lights (5pcs)
Power monitoring module
5. Refrigeration System Components
Thesystem indlude,but notbelimited to,thefollowing:
5.1 Compressor
Capacity: 1/8HP
Displacement: approx.4 cm²
Cooling capacity:approx.329W(per EN12900standard)
5.2 Condenser with Water Tank
Spiral copper coil (12-14 turns)
1/4-inch outer diametertubing：
Submerged in water tank
Heat transfer area approx.0.082 m²
5.3 Evaporator with Water Tank
Spiral copper coil (7-9 turns)
1/4-inch outer diametertubing
Submerged in water tank
Heat transfer area approx.0.049 m²
5.4 Circulating Pumps
Voltage: 220V ±10%
Power: 165W
Adjustable (three power settings)
Flow rate: approx.80 L/min
Quantity: 2 pcs

5.5 Expansion Valve
Internal balance thermostatic expansion valve (TEV)
5.6 Filter-Dryer
1/4" service connections
5.7 Service and Manual Valves
Flared thread connection
1/4" pipe diameter
5.8 Sight Glasses
Installed on liquid line,suction line,and evaporator inlet(3 pcs)
6. Instrumentation and Sensors
The system include:
Low-pressure gauge: -30～260 psi
High-pressure gauge:-30550 psi
Pressure transmitters:0-2 MPa (4-20 mA output)-2 pcs：
Temperature transmitters (PT100)-4 pcs
Digital thermometers(40°C to +90°C)-4 pcs
Pointer voltmeter (0-250V)
Pointer ammeter (0-5A)
LCD display for realtime measurement display
Analog input module
Power monitoring module
High/low pressure controller
Pressureand temperature measurable atmultiple pointsthroughouttherefrigerationcircuit.
7. Water Tank and Heat Exchange System
Evaporator and condenser coils submergedin separate watertanks.
Watertanktemperature sensorprovided.
Circulating system allowwater circulation betweentanks during steady-state experiments.
Systemallowdemonstration ofcooling and heatpump cycles.
8. Integrated Data Acquisition System
The system include abuilt-inmulti-functional data acquisition system withthefollowing
specifications:
USB nterface connection to computer
Real-time data acquisition
High-precision measurement capability
Manual and automatic data recording
Configurable sampling intervals (time or interval-based)
Digital and analog instrument display modes
User-friendly graphical interface
Customizable layout and display
AllInecessaryUSB cables supplied.
9. RFID Power Management System (Mandatory)
Theequipmentinclude anintegrated RFID-based power control system with:
Operating frequency: 13.56 MHz (high frequency)
Communication via RS485(Standard)：
OLED display for RFID card information
Audible status prompts
LED indicators
Data verification capability
Parameter configuration via software
ISO-15693 protocol compliance
Support for ModBus_TCP and ModBus_RTU
TheRFID system control poweractivation via card authentication.
10.Additional Equipment
10.1 Branded Desktop Computer
Brand: HP/Dell
Manufacturer reference:
Specifications:
Processor:Intel Corei5 (10thGeneration)
Cache:12MB
Basefrequency: 2.5GHz
RAM:8GB DDR4
Storage: 1TB SATAHDD
Graphics: Integrated
Monitor:21.5-inch
Resolution: 1366× 768
Interfaces:VGA x1,HDMI x1
Keyboard and mouse: USB, same brand
Operatingsystem:Free-DOS
10.2 Uninterruptible Power Supply (UPS)
Type: Offline UPS
Capacity:650VA
Backuptime:10 minutes atfullload
Support: 1 computer +1 monitor
11. Learning Capabilities
The system supportthe following laboratory exercises:
1. Use of pressure-enthalpy charts
2. Determination of superheat and subcooling
3. Refrigeration energy balance
4. Calculation of Coefficient of Performance (COP)
5. Determination of isentropic and volumetric efficiencies
6. Influence of heat source and sink temperatures on COP
7. Comparison between actual cycle and inverse Carnot cycle