The Domestic Refrigeration Training Unit PolarX - 564 enables basic refrigeration investigations using a closed circuit with compressor, condenser, capillary tube expansion device, and evaporator. This Domestic Refrigeration Training Unit features an open compressor (approx. 150W), condenser (approx. 750W capacity), and evaporator (250W capacity) with a heater-simulated cooling load in the chamber. Pressure switches protect the compressor, monitored by 5 Type-k temperature sensors and pressure gauges rated -1~25bar (delivery) and -1~16bar (suction). Optional LABVIEW-based DAQ software supports p-h diagram analysis.

Domestic Refrigeration Training Unit PolarX - 564, Technical Specifications
| Component | Type / Detail |
|---|---|
| Refrigeration Circuit | Compressor, condenser, capillary tube as expansion device, evaporator in refrigeration chamber |
| Cooling Load | Simulated via heater in refrigeration chamber |
| Condenser | With fan |
| Evaporator | With fan |
| Pressure Switch | Protects the compressor |
| Displays | Analog displays for pressure, digital display for temperature and power |
| Refrigerant | R134a, CFC-free |
Technical Data
Open Compressor
| Parameter | Value |
|---|---|
| Refrigeration Capacity | approx. 150W |
Condenser
| Parameter | Value |
|---|---|
| Type | Fan Cool, Continuous Tubing and External Finned |
| Transfer Area | 1.5m² |
| Capacity | approx. 750W at 25°C air temperature (ambient), Δt=15°C |
Evaporator
| Parameter | Value |
|---|---|
| Transfer Area | 1.62m² |
| Capacity | 250W at 3°C air temperature (chamber), Δt=13°C |
| Heater Power | 500W |
Pressure Safety Switch
| Side | Value |
|---|---|
| Delivery Side | Not specified |
| Suction Side | Not specified |
Refrigerant Pressure Gauges
| Parameter | Value |
|---|---|
| Suction Side (low pressure gauge) | -1~16bar |
| Delivery Side (high pressure gauge) | -1~25bar |
Digital Multifunctional Power Meter
| Parameter | Value |
|---|---|
| Range of AC Volt | 0~500 volts |
| Range of AC Ampere | 0~40 Ampere |
Filter Drier
| Parameter | Value |
|---|---|
| Maximum Working Pressure | 450psig |
Temperature Sensor
| Parameter | Value |
|---|---|
| Range | -40~400°C |
| Type | Type-k |
| Total | 05 |
Expansion Valve
| Parameter | Value |
|---|---|
| Type | Thermostatic |
Power
| Parameter | Value |
|---|---|
| Rating | 1x 0~500W |
Key Features
Experiments
Construction and Design
The Domestic Refrigeration Training Unit PolarX - 564 uses a closed refrigeration circuit with a compressor, condenser, capillary tube as expansion device, and evaporator in the refrigeration chamber. Cooling load in the chamber is simulated via a heater. Both condenser and evaporator are fitted with a fan. A pressure switch protects the compressor on the delivery and intake sides. Analog displays show pressure, while digital displays show temperature and power. The system operates on R134a refrigerant, which is CFC-free.
Software
PolarX - 564 (optional). A DAQ software package, specially designed in National Instruments LABVIEW environment, measures and calculates the results of the apparatus. The software is optional. When the software is used, a set of electronic sensors is included. The software can be run on any Windows environment.
Scope of Delivery
Q: What does the Domestic Refrigeration Training Unit PolarX - 564 teach?
A: It teaches the fundamentals of refrigeration, including compressor efficiency, system components, and characteristic variables such as coefficient of performance and volumetric efficiency.
Q: How is the cooling load simulated?
A: A heater in the refrigeration chamber simulates the cooling load.
Q: What protects the compressor?
A: A pressure switch on the delivery and intake sides protects the compressor.
Q: How many temperature sensors are included?
A: The unit includes 5 Type-k temperature sensors with a range of -40~400°C.
Q: Is the DAQ software required to operate the unit?
A: No. The PolarX - 564 software is optional, and a set of electronic sensors is included when the software is used.