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Refrigeration Chamber And Defrosting Methods Didactic Equipment Vocational Education Equipment Refrigeration Training Equipment

Item No.: ET 441
Refrigeration Chamber And Defrosting Methods Didactic Equipment Vocational Education Equipment Refrigeration Training Equipment
Description
ET 441 Refrigeration Chamber And Defrosting Methods Didactic Equipment Vocational Education Equipment Refrigeration Training Equipment

Climatic investigations in cooling and freezing chambers; frosting and defrosting of the evaporator
Features
- combined refrigeration and freezing chamber with temperature and humidity measurement
- evaporators of different sizes
- different defrosting methods
- dynamic recording of the refrigerant mass flow rate
Learning objectives/experiments
- effect of the evaporator size and temperature on the climate in the refrigeration chamber
- frosting and icing under different operating conditions
- difference between latent and sensitive cooling load
- different defrosting methods (electric heater, hot gas)
- configuration of defrost controls such as defrost timer or defrost controller
Specification
[1] refrigeration system to investigate the climate in the refrigeration chamber and different defrosting methods
[2] 2 evaporators, separately switchable via solenoid valves
[3] electric defrost heater
[4] hot gas defrosting
[5] defrost controller and defrost timer
[6] latent and sensitive cooling load
[7] evaporation pressure and temperature adjustable
[8] heat exchanger as superheater and for refrigerant supercooling
[9] digital display for temperature and humidity in the refrigeration chamber
[10] refrigerant mass flow rate calculated in the software from recorded measured values
[11] software with online representation of the h-x diagram
[12] software for data acquisition via USB under Windows 10
[13] refrigerant R513A, GWP: 631


Technical data
Compressor
- power consumption: 565W at 7,2/54,4°C
- refrigeration capacity: 1363W at 7,2/54,4°C
Latent cooling load: 2x 0...250W
Sensitive cooling load: 1x 0...200W, 1x 0...250W
Receiver: 1,3L
Refrigerant
- R513A
- GWP: 631
- filling volume: 1,3kg
- CO2-equivalent: 0,8t
Measuring ranges
- pressure: 2x 0...16bar, 1x 0...25bar
- temperature: 7x -50...150°C;  1x -25...125°C
- rel. humidity: 0...100%
- mass flow rate: refrigerant, calculated 0...39kg/h
230V, 50Hz, 1 phase
230V, 60Hz, 1 phase; 230V, 60Hz, 3 phases
UL/CSA optional
LxWxH: 2000x790x1900mm
Weight: approx. 250kg