Refrigeration System (Refrigeration & Freezing Chamber) | PolarX - 524
Product Overview
The Refrigeration System (Refrigeration & Freezing Chamber) PolarX - 524 is a trainer that arranges the components of a refrigeration circuit with refrigeration and freezing chambers clearly for structured study. It features a compressor, condenser, 2 evaporators, a thermostatic expansion valve, and an evaporation pressure controller, with valves enabling individual or parallel chamber operation. A heat exchanger supercools the refrigerant to increase efficiency, while an electric defrost heater defrosts the freezing chamber. This refrigeration system (refrigeration & freezing chamber) uses R134a, CFC-free refrigerant, and supports optional DAQ data transmission with log p-h diagram visualization.
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Technical Specifications
Refrigeration System (Refrigeration & Freezing Chamber) PolarX - 524, Technical Specifications
| Specification | Detail |
|---|---|
| System Investigation | Investigation of a refrigeration system with refrigeration and freezing chambers |
| Circuit Configuration | Compressor, condenser and 2 evaporators with thermostatic expansion valve and evaporation pressure controller |
| Freezing Chamber | Insulated, with fan and electric defrost heater |
| Refrigeration Chamber | Insulated, with evaporation pressure controller |
| Supercooling | Heat exchanger for refrigerant supercooling |
| Chamber Operation | Individual or parallel operation of the chambers via valves |
| Refrigerant | R134a, CFC-free |
Technical Data
Compressor
| Parameter | Value |
|---|---|
| Power Consumption | Approx. 491W at 5/40°C |
| Refrigeration Capacity | 1104W at 5/40°C |
Measuring Ranges
| Parameter | Value |
|---|---|
| Temperature | 12x -50°C to 120°C |
| Pressure | 1x -1 to 15 bar, 3x -1 to 9 bar, 3x 1 to 24 bar |
| Power | 0 to 1125W |
| Flow Rate | 1.5 to 25 L/h |
Condenser with Fan
| Parameter | Value |
|---|---|
| Volumetric Air Flow Rate | 290 m³/h |
| Transfer Area | 1.5 m² |
Refrigeration Chamber
| Parameter | Value |
|---|---|
| Evaporator Transfer Area | 1.06 m² |
Freezing Chamber
| Parameter | Value |
|---|---|
| Evaporator Transfer Area | 2.42 m² |
| Volumetric Air Flow Rate, Fan | 135 m³/h |
| Electric Defrost Heater | Approx. 150W |
| Evaporation Pressure Controller | 0 to 5.5 bar |
Key Features
Key Features
- Component Layout: Refrigeration and freezing chamber components arranged clearly in trainer
- Chamber Operation: Valves enable individual or parallel operation of two evaporators
- Pressure Switch: Protects delivery and intake side of compressor
- Evaporation Pressure Controller: Fitted to refrigeration chamber, effect on process examined
- Refrigerant Supercooling: Inner heat exchanger at inlet of two evaporators, increases process efficiency
- Intake Gas Superheating: Occurs simultaneously with supercooling
- Defrosting: Electric defrost heater for freezing chamber, approx. 150W
- Process Schematic: Quick overview with signal lamps showing operating state
- Measurement: Sensors record relevant values, readable on digital displays
- Data Transmission: Optional DAQ transmission of measured values to PC
- Pressure Display: Manometers directly at trainer for key pressures
- Software Visualization: Cyclic process represented in log p-h diagram (optional)
- Trainer Application: Refrigeration System (Refrigeration & Freezing Chamber) supports fault finding in refrigeration system components
Experiments
- Design and components of a refrigeration system with 2 evaporators
- Components and their functions:
- Compressor, condenser, evaporator
- Thermostatic expansion valve
- Evaporation pressure controller
- Pressure switch
- Electric defrost heater
- Thermodynamics of the refrigeration cycle:
- Effect of refrigerant supercooling
- Representation of the thermodynamic cycle in the log p-h diagram
- Determination of important characteristic variables
- Coefficient of performance
- Refrigeration capacity
- Compressor work
- Fault finding in refrigeration system components
Construction and Design
The Refrigeration System (Refrigeration & Freezing Chamber) PolarX - 524 is built around a refrigeration circuit with a compressor, condenser, and 2 evaporators, fitted with a thermostatic expansion valve and an evaporation pressure controller. The freezing chamber is insulated and includes a fan and an electric defrost heater. The refrigeration chamber is insulated and includes an evaporation pressure controller. A heat exchanger is fitted for refrigerant supercooling at the inlet of the two evaporators. Valves allow individual or parallel operation of the two chambers. The circuit uses R134a, a CFC-free refrigerant. A pressure switch is fitted on the delivery and intake side of the compressor. The trainer includes a process schematic with signal lamps to indicate the operating state of selected components, along with manometers for direct pressure readings.
Software
Software PolarX - 524 (optional)
DAQ software designed in National Instruments™ LabVIEW™ environment to measure and calculate 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
Optional Accessories
- Software PolarX - 524 (DAQ software, National Instruments™ LabVIEW™ environment, requires electronic sensor set)
- DAQ transmission of measured values directly to PC
- Representation of the cyclic process in the log p-h diagram (software feature)
Standards & Compliance
- Manufactured under ISO 9001:2015 Quality Management System
- CE Marking - European Conformity where applicable
- Supplied with calibration certificate, operation manual, and experiment guide
- 12-month manufacturer's warranty (parts & labour from installation)
Ordering & Delivery
- Incoterms: CIF to destination seaport, FOB Mundra/Nhava Sheva, or Ex-Works Ambala
- Lead time: 3–5 weeks production + sea transit to destination
- Payment: LC (Letter of Credit) or T/T bank transfer against proforma invoice
- Documentation: commercial invoice, packing list, bill of lading, certificate of origin, insurance certificate
Frequently Asked Questions
Q: What does the Refrigeration System (Refrigeration & Freezing Chamber) PolarX - 524 demonstrate?
A: It demonstrates the design, components, and fault finding of a refrigeration system with refrigeration and freezing chambers, including 2 evaporators.
Q: Can the two chambers be operated independently?
A: Yes, valves enable individual or parallel operation of the evaporators in the two chambers.
Q: What refrigerant does the unit use?
A: R134a, which is CFC-free.
Q: How is the freezing chamber defrosted?
A: An electric defrost heater, approx. 150W, is available to defrost the freezing chamber.
Q: Is the PolarX - 524 software required to operate the unit?
A: No, the software is optional. A set of electronic sensors is included when the software is used.