Refrigeration Cycle and Heat Pump Training System with HMI Educational Equipment Demonstrational Equipment Refrigeration Trainer

AY261014QA04 Refrigeration Cycle and Heat Pump Training System with HMI Educational Equipment Demonstrational Equipment Refrigeration Trainer
1. Scope of Supply:
The Contractor shall supply, deliver, install, test, commission, and hand over complete Refrigeration Cycle and Heat Pump Training System with Human-Machine Interface (HMI), including:
Fully operational refrigeration and reverse-cycle heat pump system
Programmable HMI touchscreen control system
RFID power management system
Complete instrumentation and control panel
Standard accessories, tools, and documentation
The equipment shall be factory assembled, tested, and delivered ready for immediate instructional use.
2. General Description:
The system shall be designed for advanced vocational training in refrigeration and heat pump technology. It shall allow:
Operation in both forward refrigeration mode and reverse heat pump mode
Practical wiring and electrical 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.
All main components shall be mounted visibly on the front panel for direct observation and operation.
Refrigerant shall be R134a or equivalent environmentally acceptable refrigerant.
3. Mechanical Construction:
3.1 Training Bench Structure:
Heavy-duty aluminum profile and sheet-metal construction
Approximate Minimum 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
Copper pipes coated with anti-oxidation and anti-corrosion treatment.
3.2 Component Layout
All major refrigeration components shall be mounted on the front panel, including:
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 piping shall be clearly arranged and accessible for observation.


4. Electrical Requirements:
Power Supply: Single-phase 220V ±10%, 50Hz
Rated Current: 10A (Minimum)
Earth leakage circuit breaker 16A (Minimum)
Key switch (self-locking)
Emergency stop button (self-locking)
Overload protector 10A (Minimum)
Analog voltmeter (0–250V)
Analog ammeter (0–10A)
Indicator lights (minimum 5 pcs)
5. Refrigeration and Heat Pump Components:
The system shall include, at minimum:
5.1 Compressor:
Capacity: 1/2 HP (Minimum)
Voltage: 220V AC, 50Hz
Refrigerant: R134a or equivalent
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
Minimum operating pressure: 2.5 MPa
Min operating pressure: 0.25 MPa
Discharge pipe: 3/8" (Minimum)
Suction/coil pipe: 5/16" (Minimum)
5.5 Expansion Devices:
Pressure expansion valve (R134a or equivalent)
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 (Minimum)
5.8 Heat Pump Filter-Driers:
DN 50
Port: Minimum 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):
The system shall include a programmable touchscreen HMI with the following minimum specifications:
Touchscreen operation
Memory: SRAM 128 KB
Compressor start/stop control
Refrigeration and heat pump cycle switching
Selection of expansion and solenoid valve paths
System cycle diagram display
Real-time high/low pressure numerical display
Selectable pressure units (bar, psi, kPa)
The HMI shall provide intuitive graphical visualization of system operation.
7. Instrumentation and Measurement:
The system shall include:
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
Accuracy: ±2°C
All measuring instruments shall be permanently mounted and clearly labeled.    
8. RFID Power Management System (Mandatory):
The system shall incorporate an RFID-based power management system with:
Operating frequency: 13.56 MHz high frequency
Communication interface: RS485 or Standard
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
The RFID system shall enable secure power activation through card authentication.
9. Standard Accessories:
The following accessories shall be included:
1Dual compound pressure gauge set (R404A, R407C, R134a, R22)
2Digital thermometer
3.Digital anemometer
4.Tool kit including:
2L oxygen cylinder
Fuel gas cylinder
Welding torch
Toolbox
5Vacuum pump (1L)
6.R134a refrigerant or equivalent (1 can)
7.Experimental manual (1 copy)
10. Functional Capabilities:
The system shall support the 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.Comparison of refrigeration and heating energy consumption
9.System performance comparison under different operating modes.