Refrigeration Fundamentals
Refrigerator Model Training System
An open-layout refrigeration trainer for component observation, control-circuit construction and operating-condition recording.
Reference rendering only. Final appearance is subject to confirmed specifications.
Product Overview
R-134a1/3 HP0–300 V0–10 A
Key Features
- Unfolded Component Layout: The major functional elements of the refrigeration loop—including compressor, condenser, evaporator, capillary tube, filter, and drier—are fully unfolded on an open panel to facilitate direct observation and thermodynamic analysis.
- Front-Panel Circuit Construction: Standard electrical symbols for all components are clearly mapped on the front panel, enabling students to manually construct and wire active control circuits.
- Integrated Control & Safety: Features system protection fuses, fan status indicators, evaporator door switches, and comprehensive circuit safety devices.
- Precision Embedded Instrumentation: Equipped with steel-cased high/low pressure gauges, AC Voltmeter, AC Ammeter, and digital temperature indicators for real-time monitoring.
Technical Specifications
| Compressor Motor | 1/3 HP, Single Phase, 220V AC, 50Hz |
|---|---|
| System Refrigerant | R-134a |
| Condenser Unit | Natural cooling type; Refrigerant ports: Input 6.4mm (1/4"), Output 6.4mm (1/4") |
| Evaporator Unit | Direct expansion cooling type; Internal Volume: 412 (W) x 310 (D) x 290 (H) mm +/-10% |
| Refrigerant Expansion Control | Precision Capillary Tube |
| Filter & Drier Assembly | Liquid & service ports: 1/4", 1/4" |
| Service Valves | High-pressure service: 1/4"; Low-pressure service: 1/4" |
| Pressure Gauges | Steel-cased Heavy duty gauges; Units: Psi & kg/cm2 |
| AC Voltmeter | 0 ~ 300V AC |
| AC Ammeter | 0 ~ 10A AC |
| Digital Temperature Meter | -40C to +90C with digital display; NTC Type thermocouple |
| Overall Dimensions | 720 (W) x 1000 (D) x 1530 (H) mm +/-10% |
Experiment Capabilities
- Hands-on practice in electrical wiring and power connection for hermetic compressors.
- Construction and verification of custom control circuits for domestic refrigeration systems.
- Operational management and sequence troubleshooting of refrigeration systems.
- Comprehensive analysis of fundamental refrigerator operating characteristics.
- Plotting system operating points on the Mollier (Pressure-Enthalpy) Chart.
- Thermodynamic calculations of cooling capacity, heat rejection, and Coefficient of Performance (CoP).
Standard Accessories
Manifold Gauge Set (Single & Double with charging hoses), Digital Thermal Meter (precision temperature measuring instrument), AC Current Clamp Meter (digital clamp-on meter), Vacuum Pump (heavy-duty HVAC vacuum pump), Tool Box & Materials (tubing tools, fittings, copper tubes), Refrigerant Canisters (R-134a and R-600a) and more.