ASR2038 Secondary Controllers in Refrigeration Systems Vocational Training Equipment Refrigeration Training Equipment
Learning Objectives / Experiments
– properties and application options of different secondary controllers
* evaporation pressure controller (KVP)
* start-up controller (compressor intake control;
KVL)
* capacity controller (control of the compressor delivery capacity; KVC)
* condensation pressure controller (WVFX, KVR)
* receiver pressure controller (KVD with NRD)
– adjustment of optimum operating points
– fault finding in secondary controllers
Specification
[1] trainer from the practical series for the training of mechatronics engineers for refrigeration
[2] refrigeration system with different secondary controllers: evaporation pressure controller KVP, capacity controller KVC, condensation pressure controller KVR, pressure-controlled water valve WVFX as condensation pressure controller, receiver pressure controller KVD, start-up controller KVL
[3] 2 refrigeration chambers: refrigeration and freezing stage
[4] evaporator selectable via solenoid valves
[5] adjustable electric heater in the refrigeration chambers as cooling load
[6] water-cooled coaxial condenser
[7] pressure measurement at all relevant points in the system
[8] refrigerant AR134a, CFC-free
Technical Data
Compressor according to CECOMAF
– refrigeration capacity: 990W at -5/55°C
– power consumption: 685W
Cooling load: 0…500W
Receiver: 1,3L
Measuring ranges
– pressure: 5x -1…9bar / 3x -1…24bar
– flow rate water: 20…250L/h
– flow rate refrigerant: 1x 1…11,5L/h; 1x 2…27L/h
– temperature: -50…300°C
Dimensions and Weight
LxWxH: 2.500x790x1.900mm
Weight: approx. 280kg
Connections
230V, 50Hz, 1 phase
Water connection
