Refrigeration System And Freezing Chamber
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Product Description
REFRIGERATION SYSTEM WITH REFRIGERATION AND FREEZING CHAMBER
Refrigeration systems requires comprehensive knowledge This knowledge also includes the design and purpose of the individual components. The components of a refrigeration circuit with refrigeration and freezing chambers are arranged clearly in the trainer. Solenoid valves enable the individual or parallel operation of the evaporators in the two chambers. The circuit is equipped with a combined pressure switch for the delivery and intake side of the compressor. The refrigeration chamber features an evaporation pressure controller. The effect of the evaporation pressure controller on the overall process is being examined. An inner heat exchanger in the inlet of the two evaporators is used for supercooling the refrigerant to increase the efficiency of the process. At the same time the intake gas is superheated.
The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.The unit shall perform the following experiments and investigations:
Learning Objectives / 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
Specification
- Investigation of a refrigeration system with refrigeration and freezing chambers
- Refrigeration circuit with compressor, condenser and 2 evaporators with thermostatic expansion valve and evaporation pressure controller
- Insulated freezing chamber with fan and electric defrost heater
- Insulated refrigeration chamber with evaporation pressure controller
- Heat exchanger for refrigerant supercooling
- Individual or parallel operation of the chambers via solenoid valves
- Simulation of 18 faults
- Software for data acquisition via USB under Windows Vista or Windows 7
- Refrigerant R134a, CFC-free
Technical Data
- Compressor
- Power consumption: 491W at 5/40°C
- Refrigeration capacity: 1104W at 5/40°C
- Condenser with fan
- Volumetric air flow rate: 290m³/h
- Transfer area: 1,5m²
- Refrigeration chamber
- Evaporator transfer area: 1,06m²
- Freezing chamber
- Evaporator transfer area: 2,42m²
- Volumetric air flow rate, fan: 135m³/h
- Electric defrost heater: approx. 150W
- Evaporation pressure controller: 0...5,5bar
Measuring ranges
- Temperature: 12x -50...120°C
- Pressure: 1x -1...15bar, 3x -1...9bar, 3x -1...24bar
- Power: 0...1125W
- Flow rate: 1,5...23,5L/h
Dimensions and Weight
- LxWxH: 2000x670x1900mm
- Weight: approx. 210kg
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