Refrigeration Components for Advanced Experiments Vocational Training Equipment Fridge Trainer

SR2048 Refrigeration Components for Advanced Experiments Vocational Training Equipment Fridge Trainer

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