Refrigeration Cycle and Heat Pump Training System with HMI Didactic Equipment School Equipment Training Air Conditioner Trainer

1. Scope of Supply
RefrigerationCycle and Heat PumpTraining System with HMl, including:
Fully operational refrigeration and reverse-cydle heat pump system
Programmable HMI touchscreen control system
RFID power management system
Complete instrumentation and control panel
Standard accessories,tools, and documentation
Theequipment factoryassembled,tested,and delivered ready forimmediate instructional use.
2. General Description
Thesystemdesignedforadvanced vocational training in refrigerationandheatpumptechnology
It allow:
Operation in both forward refrigeration mode and reverse heat pump mode
Practicalwiring andelectrical control circuit training
Observation of refrigeration components and system states
Performance analysis and comparison of cooling and heating cycles
Calculation of COP (Coefficient of Performance) and EER (Energy Efficiency Ratio)
Mollier diagram plotting and thermodynamic analysis
Al main componentsmounted visiblyon thefrontpanel for directobservation and operation.
Refrigerant R134a
3. Mechanical Construction
3.1 Training Bench Structure
Heavy-duty aluminum profile and sheet-metal construction
Approximate dimensions:
1600 (W) × 700 (D) × 1850 (H) mm
Mounted on four (4) casters:
Two (2) with brakes
Two (2) without brakes
Fully piped and electrically wired
Copperpipescoatedwith anti-oxidation andanti-corosiontreatment
3.2 Component Layout
Al majorrefrigeration componentsmounted onthe frontpanel,indluding:
Compressor
Condenser (with fan)
Evaporator (with fan)
Expansion devices
Receiver and accumulator
Four-way reversing valve
Solenoid valves
Pressure gauges
Manual valves
Sight glasses
Refrigeration pipingclearly arrangedand accessiblefor observation.
4. Electrical Requirements
Power Supply: Single-phase 220V ±10%,50Hz
Rated Current: 10A
Earthleakage circuitbreaker 16A
Key switch (self-locking)
Emergency stop button (self-locking)
Overload protector 10A
Analog voltmeter (0-250V)
Analog ammeter (0-10A)
Indicator lights (5 pcs)

5. Refrigeration and Heat Pump Components
Thesystem include,at
5.1 Compressor
Capacity: 1/2HP
Voltage: 220V AC,50Hz
Refrigerant: R134a
5.2 Condenser (with Fan)
Single-phase 220V ±10%
Mounted for full visibility
5.3 Evaporator (with Fan)
Single-phase 220V ±10%
5.4 Four-Way Reversing Valve
220VAC electronic type
Operating pressure:2.5MPa
Operating pressure:0.25 MPa
Discharge pipe: 3/8"
Suction/coil pipe:5/16"
5.5 Expansion Devices
Pressure expansion valve (R134a)
Thermostatic Expansion Valve (TEV):
Operating range:-40°C to +10°C
Ambient temperature: -40°C to +90°C
5.6 Liquid Receiver
Capacity: 1 liter
5.7 Solenoid Valves
Quantity: 9 pcs
Voltage: 220V ±10%
Welded connection,Φ6 mm
5.8 Heat Pump Filter-Driers
DN 50
Port:1/4" (2 pcs)
5.9 Pressure Controllers
High-pressure switch: 110-430 psi
Low-pressure switch: 0-80 psi
5.10 Sight Glasses
Welded type (6 pcs)
6. Human-Machine Interface (HMI)
Thesystem include a programmabletouchscreen HMI with the followingspecifications:
Touchscreen operation
Memory: SRAM 128 KB
Compressor start/stop control
Refrigeration and heat pump cycle switching
Selectionofexpansionandsolenoidvavepaths
System cycle diagram display
Real-time highMow pressure numerical display
Selectable pressure units (bar, psi,kPa)
TheHMl provide intuitive graphical visualization ofsystem operation.
7. Instrumentation and Measurement
Thesystem including:
Low-pressure gauge(30～260 psi/-0.1~1.8 MPa)
High-pressure gauge(-30～550 psi/-0.1～3.8 MPa)
Temperature controller with sensor
Digital thermometer
Digital anemometer:
Wind speed: 0.3～45 m/s
Resolution: 0.001 m/s
Air temperature: 0.0～45°C
o Accuracy: ±2°C
All measuringinstruments permanentlymounted and clearly labeled.
8.RFID Power Management System (Mandatory)
Thesystem incorporate anRFID-based power managementsystem with:
Operating frequency: 13.56 MHz high frequency
Communicationinterface:RS485
OLED display for RFID card information and error codes
Customizable display via software
Audible status prompts
LED indicators
Data verification:
OLED comparison method
Command-based verification
Parameter configuration and function testing software
Compliance with ISO-15693
Support for ModBus_TCP and ModBus_RTU
TheRFID system enable secure power activation through card authentication.
9. Standard Accessories
Thefollowing accessories included:
1. Dual compound pressure gauge set (R404A,R407C,R134a,R22)
2. Digital thermometer
3. Digital anemometer
4. Tool kit indluding:
2L oxygen cylinder
Fuel gas cylinderWelding torch
Toolbox
5. Vacuum pump (1L)
6.R134arefrigerant(1 can)
7. Experimental manual (1 copy)
10. Functional Capabilities
Thesystem supportthe following training activities:
1. Operation of refrigeration cycle systems
2. Commissioning of refrigeration cycle systems
3. Performance analysis of refrigeration systems
4.Operation of reverse-cycle heat pump systems
5. Performance analysis of heat pump systems
6. Mollier diagram plotting
7. COP and EER calculation
8.Comparisonof refrigeration and heating energyconsumption
9. System performance comparison under different operating modes