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Products  |  Thermodynamics, Heating and Sanitary Systems  |  Refrigeration and Air Conditioning  |  ET 352
ET 352 Steam Jet Refrigeration System Show data sheet (pdf file) Print page
Technical Description
This interesting benchtop unit has a steam jet thermocompressor instead of a mechanical compressor, with the advantage that any heat source can be used to produce the steam that drives the process. The unit has a refrigerant circuit and a vapour circuit that are connected via a condenser and steam ejector. Both the evaporator and the steam generator are heated electrically. The evaporator and condenser are transparent so that the processes can be clearly observed. The steam generator can be operated with an external source of hot water instead of electrical heating. A special refrigerant is used at low pressure.
A water supply is required.  
Learning Objectives / Experiments
- Application of Rankine cycle in refrigeration
  technology
- Cyclic process on the p-h state diagram
- Determination of the energies used and converted
- Calculation of the system-specific data
- Behaviour of the system under load
Features
* Refrigeration system with vapour jet pump1
* Clear layout of the components1
* Condenser and evaporator transparent
Alternative products
ET 350 -- Vapour Compression Refrigeration Cycle
ET 411C -- Basic Cycle Refrigeration Trainer / PC
Specification

[1] Demo model of a refrigeration system with a steam jet thermocompressor to generate low pressures
[2] Steam generator: water tank with heater, level indicator and refrigerant pressure vessel
[3] Condenser: glass vessel with coil
[4] Evaporator: glass vessel with heater and float-type expansion valve
[5] Pressostats and safety valve
[6] Voltage, current and pressure displays
[7] Temperature sensors with display and measuring point switch
[8] CFC free refrigerant Solkatherm SES36

[9] l x w x h 1250x450x1200 mm, 60kg
[10] 230V, 50Hz, 1 phase; cooling water

 
Technical Data

Steam generator

- heater: 2kW
- with low water cut-out
Evaporator heater: 4x125W
Diaphragm pump
- max. flow rate: 26.2L/h at 10bar back pressure
 

Measuring ranges
- current: 2.5A
- voltage: 230VAC
- temperature: 9x -20...200°C
- pressure: 2x 0...10bar / 2x -1...1.5bar
- flow rate (water): 6...75g/s

 
Dimensions and Weight
l x w x h : 1250 x 450 x 1200 mm
Weight : approx. 60 kg
Connections
230V, 50Hz, 1 phase
Water supply
Scope of Delivery
1 complete unit
1 instruction manual
Order Details
061.35200  ET 352  Steam Jet Refrigeration
                    System
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© 2005 G.U.N.T. Gerätebau GmbH