Capacity Control And Faults In Refrigeration Systems Educational Equipment Refrigerator Training Equipment

Capacity Control And Faults In Refrigeration Systems Educational Equipment Refrigerator Training Equipment

SR2021 Capacity Control And Faults In Refrigeration Systems Educational Equipment Refrigerator Training Equipment for college, vocational training center, university. 

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SR2021 Capacity Control And Faults In Refrigeration Systems Educational Equipment Refrigerator Training Equipment

 

 

Learning Objectives / Experiments

– familiarisation with the key devices for changing the refrigeration capacity

* thermostat

* capacity controller

* start-up controller

* evaporation pressure controller

* condensation pressure controller

– fault finding in refrigeration system components

– effect of refrigerant supercooling

– familiarisation with defrosting methods

* electric defrost heater

* hot gas defrosting

– representation of the thermodynamic cycle in the log p-h diagram

Specification

[1] investigation of a refrigeration system with refrigeration and freezing chambers

[2] refrigeration circuit with compressor, condenser, capacity controller, start-up controller, combined pressure switch and 2 evaporators in insulated chambers

[3] each chamber with solenoid valve, thermostat, thermostatic expansion valve, fan and heat exchanger for refrigerant supercooling

[4] refrigeration chamber with evaporation pressure controller

[5] freezing chamber with electric defrost heater and hot gas defrosting

[6] separate or parallel operation of the chambers via solenoid valves

[7] simulation of 12 faults

[8] touch panel PC for fault activation, data acquisition, evaluation and representation in the log p-h diagram

[9] refrigerant R404a

Technical Data

Compressor

– refrigeration capacity: 2440W at -10/30°C

Condenser with fan

– volumetric air flow rate: 570m³/h

Evaporator transfer areas

– refrigeration chamber: 1,12m²

– freezing chamber: 1,88m²

Electric defrost heater: approx. 125W

Capacity controller: 0,2…6bar

Start-up controller: 0,2…6bar

Thermostat: 2x -25…15°C

Evaporation pressure controller: 0…5,5bar

Measuring ranges

– temperature: 6x -50…50°C; 5x 0…100°C

– pressure: 3x -1…12,5bar; 2x -1…24bar

– flow rate: 2x 1.5…22,5L/h

– compressor power consumption: 0…5kW

Dimensions and Weight

LxWxH: 2420x780x1900mm

Weight: approx. 280kg

Required for Operation

400V, 50Hz, 3 phases or 230V, 60Hz/CSA, 3 phases

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