ASR20273 Refrigeration Components for Advanced Experiments Educational Equipment Refrigeration Training Equipment
Learning Objectives / Experiments
– Set-up of different refrigeration circuits
– Design, operation and adjustment of components
* evaporation pressure, start-up, capacity and
refrigeration controllers
* electric thermostat
* manual valve as expansion element
* post-injection valve
* solenoid valve with coil
* 4/2-way reversing valve
* power and auxiliary contactor
* time relay
* defrost timer
* hot gas defrosting
– Read and understand technical drawings and operating instructions
– Fault finding
Specification
[1] Components for the set-up of complex refrigeration circuits in conjunction
[2] Post-injection valve
[3] Refrigeration controller with PTC sensor
[4] Defrost timer, timing interval 30min
[5] Time relay
[6] 4/2-way reversing valve, solenoid valves
[7] Electric thermostat as temperature controller
[8] Power and auxiliary contactor
Technical Data
Rated controller capacity at t0=-10°C, tc=25°C
– evaporation pressure: 2,8kW at Δp=0,2bar
– start-up: 5,3kW at Δp=0,2bar
– capacity: 4,8 kW at offset=0,7bar
Suction line receiver: 0,3L, max. 28bar
Temperature controller: -5…35°C
Refrigeration controller: -40…110°C
Post-injection valve: -45…35°C
Time relay: response delay: 0,05s…100h
Measuring ranges
– pressure, evaporation: 0…5,5bar
– intake pressure: 0,2…6bar
– pressure, capacity controller: 0,2…6bar
Dimensions and Weight
Plate height: 297mm
Weight: approx. 25kg
