ASR20331 Model of a Refrigeration System with Refrigeration and Freezing Stage Teaching Equipment Refrigeration Lab Equipment
Learning Objectives / Experiments
– design and operation of a refrigeration system with two evaporators
– series and parallel connection of two evaporators
– familiarisation with the different expansion elements
* operation with capillary tube
* operation with expansion valve
– operating behaviour under load
– refrigeration cycle in the log p-h diagram
– effect of the evaporation pressure
– fault simulation
Specification
[1] model of a refrigeration system to plug onto the base unit
[2] training system with HSI technology
[3] each refrigeration chamber includes: evaporator with fan (to recirculate the air) and heater to generate the cooling load
[4] refrigeration chambers with transparent front
[5] adjustable evaporation pressure controller
[6] selectable expansion elements: expansion valve or capillary tube
[7] operating modes of the system configurable via 5 solenoid valves
[8] sensors to record temperature and pressure
[9] operation of solenoid valves, fan, heater and fault simulation via software
[10] software: educational software, data acquisition, system operation
[11] software for data acquisition via USB under Windows Vista or Windows 7
Technical Data
Refrigeration chamber: LxWxH: 270x270x220mm
Electric PTC heater as cooling load: 210W
Capillary tube: length 2m
Evaporation pressure controller: 0…5,5bar
Measuring ranges
– temperature: 6x -50…50°C
– pressure: 2x -1…9bar
Dimensions and Weight
LxWxH: 850x380x750mm
Weight: approx. 45kg
