ET 352 Vapour jet compressor in refrigeration
ET 352 Vapour jet compressor in refrigeration
GUNT ET 352 experimental system provides a detailed study of the refrigeration cycle using a vapor jet compressor. It simulates cooling and energy transfer processes under real-world conditions, making it ideal for teaching thermodynamics and refrigeration systems. Students can analyze the relationship between pressure, temperature, and system performance while understanding how the ejector effect improves cooling efficiency.
More about the productGUNT ET 352
System demonstrates the operation of a vapour jet compressor in a refrigeration cycle.
It consists of a refrigeration circuit with a condenser, evaporator, and vapour jet compressor for the refrigerant, as well as a vapour circuit with a pump and vapour generator to drive the compressor.
The system features a transparent tank with a water-cooled pipe coil as a condenser and another transparent tank with an adjustable heater as an evaporator.
Water supply can be connected via a laboratory network or an external chiller (WL 110.20) to maintain a maximum water temperature of 14°C.
The flooded evaporator is equipped with a float valve as the expansion element.
The vapour generator has a heated water jacket, which can be powered electrically or by solar thermal energy using ET 352.01 or HL 313. The system uses refrigerant R1233zd, which has a low global warming potential (GWP: 4).
A PLC-controlled system with a touchscreen interface enables system operation, and data is recorded via USB storage.
Stored measurements can be accessed via WLAN/LAN or a direct LAN connection.
Technical Data & Specifications
- PLC: Weintek cMT3162X
- Vapour Jet Compressor:
- Minimum convergent-divergent nozzle diameter: ~1.7mm
- Minimum mixing jet diameter: ~7mm
- Condenser (Tank):
- Volume: ~3.5L
- Pipe Coil Area: ~0.17m²
- Evaporator (Tank):
- Volume: ~3.5L
- Heater Power: 3x 175W
- Vapour Generator:
- Refrigerant Tank: ~0.75L
- Water Jacket: ~9L
- Heater Power: 2kW
- Pump:
- Maximum Flow Rate: ~1.7L/min
- Maximum Head: ~70mWS
- Refrigerant:
- Type: R1233zd
- GWP: 4
- Filling Volume: 2kg
- CO₂ Equivalent: 0t
- Measuring Ranges:
- Temperature: 12x -20…100°C
- Pressure: 2x 0…10bar, 2x -1…9bar
- Flow Rate: 2x 0…1.5L/min, 1x 30…320L/h
- Power: 1x 0…750W, 1x 0…3kW
Power Supply
- 230V, 50Hz, 1 phase
- 230V, 60Hz, 1 phase
- 230V, 60Hz, 3 phases
- UL/CSA optional
Dimensions & Weight
- LxWxH: 1708x790x1524mm
- Weight: ~225kg
Required for Operation
- Water connection (minimum 320L/h, max. 14°C)
- Drain or WL 110.20 chiller
- PC with Windows recommended
- Quantitative unit
- ks
ET 352 Vapour jet compressor in refrigeration
