ISO 15502 Refrigerator Freezer Energy Efficiency Performance Test Chamber provides a stable and reliable environment for refrigerator type testing and development. The system can simultaneously accommodate 2 refrigerators for comprehensive testing under various standard operating conditions and simulated usage scenarios.

Compliance Standards: IEC 62552:2015

Test Capabilities:

• Refrigeration rate testing
• Storage temperature analysis
• Working coefficient measurement
• Power consumption monitoring
• Freezing capacity assessment
• Load recovery testing
• Ice-making capacity evaluation
• Condensation testing

Laboratory Structure:

• B1-grade 100mm thick polyurethane foam insulation panels
• Top-supply and dual-side return air system
• 0.6mm thick steel plate interior/exterior surfaces
• Aluminium perforated panel ceiling
• External dimensions: 4000mm W * 4000mm D * 3200mm H
• Single-leaf door with electrically heated frame and observation window
• 2 wooden test benches (2300mm W * 1200mm D * 2300mm H)

Performance Parameters:

• Temperature range: 0°C to +50°C ±0.3°C
• Humidity range: 35%RH to 93%RH ±3.0%RH (controlled between 10°C and 45°C)
• Wind speed: less than 0.25 m/s
• Heating/cooling rate: -10°C to 50°C transition in less than 90 minutes
• Vertical temperature gradient: less than 0.88°C/m

Temperature & Humidity Control:

• Temperature controller: SR93
• Control range: 0°C to 50°C
• Control accuracy: ±0.3°C
• Humidity control range: 35% to 95% RH
• Humidity control accuracy: ±3% RH

Temperature Measurement:

• Thermocouples: 2 * 0.254 mm (Ø), Omega, 20 points per station
• Measurement accuracy: ±0.3°C (-5°C to 80°C)
• Isothermal terminals: American Omega SMP-MF dedicated sockets
• Temperature parameter acquisition: Yokogawa GM10, 40 channels

Computer System:

• Intel i7 processor
• 8GB RAM
• 1TB hard drive
• 27-inch LCD monitor
• Windows-based test software with English interface

Air Conditioning Unit:

• Water-cooled compression condensing unit with stepless control
• 3HP+3HP Copeland/Danfoss compressors
• Copper heat exchanger and coil
• Stainless steel electric heater with solid-state relay control
• Ultrasonic humidifier with automatic water supply
• Centrifugal fan system
• All stainless steel air conditioning cabinet (1.0mm)

Control System:

• Temperature and humidity controller: SR93
• Programmable logic controller: Mitsubishi PLC
• Touch screen: Mitsubishi 10-inch
• Solid-state relays: Ximaden or equivalent reputable brands
• Circuit breakers and contactors: Schneider brand
• Comprehensive alarm and protection functions

Construction & Materials:

• Stainless steel air handling cabinet (≥1.0mm thickness)
• Isothermal terminal boxes constructed of 1.2mm thick stainless steel
• Control cabinet with 1.2mm thick steel plates
• All instruments and components are new, high-quality with valid warranties
• Professional cable management with dedicated labeling

Safety Features:

• Combustible gas alarm system (0-1000 ppm or 0-100% LEL range)
• Protective devices for abnormal temperature, pressure, water level, voltage, and current
• Electrical safety design compliant with national standards
• Reliable grounding with 2.5mm² copper-core wire
• 72-hour continuous operation capability without defrosting

The laboratory testing software provides comprehensive functionality for refrigerator performance evaluation:

• Latest standard testing software compliant with IEC 62552
• Adjustable data collection rate (3 to 30 seconds)
• Comprehensive testing functions including:
  • Power consumption analysis
  • Storage temperature monitoring
  • Freezing capacity assessment
  • Cooling rate measurement
  • Temperature recovery testing
  • Ice production capacity evaluation
  • Voltage fluctuation analysis
• Excellent stability and reliability