Domestic Refrigeration Training Unit | PolarX – 564
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.
The Domestic Refrigeration Training Unit PolarX – 564 enables basic investigations in the field of refrigeration. This Domestic Refrigeration Training Unit includes an evaporator, a capillary type expansion device, a condenser with fan, a closed refrigeration circuit with compressor, and a door for the refrigerated chamber.
Product Overview A fan in the refrigeration chamber of this Domestic Refrigeration Training Unit enables an even distribution of temperature. The refrigeration chamber’s heater simulates a cooling load. For the compressor’s delivery and intake sides, the circuit has a pressure switch.
Gauges and sensors measure all relevant values, which are displayed on digital displays. The user can record measured values in a data recording software (optional), allowing for easy analysis and representation of the process in the p-h diagram. The software also shows important process data, such as the refrigeration capacity and the performance coefficient (optional).
Well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.
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
- Application: Domestic Refrigeration Training Unit for basic refrigeration investigations
- Refrigeration Circuit: Compressor, condenser, capillary tube expansion device, evaporator
- Cooling Load Simulation: Heater in refrigeration chamber
- Compressor Type: Open compressor, approx. 150W refrigeration capacity
- Condenser Capacity: approx. 750W at 25°C ambient, Δt=15°C
- Evaporator Capacity: 250W at 3°C chamber temperature, Δt=13°C
- Chamber Fan: Ensures even temperature distribution
- Pressure Switch: Protects compressor on delivery and intake sides
- Temperature Sensors: 5 x Type-k, range -40~400°C
- Refrigerant: R134a, CFC-free
Experiments
- Fundamentals of refrigeration
- Determination of the compressor efficiency
- Design and components of a refrigeration system: compressor, condenser, evaporator, capillary tube expansion device, pressure switch
- Thermodynamic cycle in the p-h diagram
- Determination of important characteristic variables: coefficient of performance, compressor capacity, refrigeration capacity, compression ratio, volumetric efficiency
- Effect of the compressor flow rate on the refrigeration circuit
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
- 1 experimental module
- 1 instruction manual
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.
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