Model of a Refrigeration System with Refrigeration and Freezing Stage Teaching Equipment Refrigeration Lab Equipment

SR20331 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