Capacity Control in Refrigeration Systems Teaching Equipment Fridge Training Equipment

Capacity Control in Refrigeration Systems Teaching Equipment Fridge Training Equipment

SR2042 Capacity Control in Refrigeration Systems Teaching Equipment Fridge Training Equipment for college, vocational training center, university. 

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SR2042 Capacity Control in Refrigeration Systems Teaching Equipment Fridge Training Equipment

Learning Objectives / Experiments

– key devices for changing the refrigeration capacity

* thermostat

* evaporation pressure controller

* refrigeration controller

* capacity controller

* compressor with variable speed

– operation of a refrigeration controller with specification of temperatures for

* controlling the refrigeration capacity

* switching the defrost heater on and off

* switching the fans on and off

Specification

[1] methods for capacity control in refrigeration systems

[2] refrigeration circuit with compressor, condenser and 2 evaporators in insulated refrigeration chambers

[3] each refrigeration chamber with adjustable heater to generate a cooling load, thermostatic expansion valve and fan

[4] 1 refrigeration chamber with refrigeration controller for temperature control; solenoid valve, fan and defrost heater as actuators

[5] 1 refrigeration chamber with thermostat, solenoid valve and evaporation pressure controller for temperature control

[6] compressor with variable speed via frequency converter

[7] capacity controller in the compressor bypass

[8] Refrigerant R134a, CFC-free

Technical Data

Compressor

– refrigeration capacity: approx. 560W at -5/25°C

and 1.450min-1

– drive motor: 550W

2 heaters: approx. 500W

4 fans: max. air flow: approx. 50m³/h

1 defrost heater: approx. 75W

Refrigeration controller

– 7 inputs

– 7 outputs

Evaporation pressure controller: 0…5,5bar

Thermostat: -5…20°C

Capacity controller: 0,2…6bar

Measuring ranges

– motor speed: 1.100…2.700min-1

– temperature: 3x -60…50°C

– heater power: 2x 0…1.000W

– pressure: 3x -1…9bar; 1x -1…24bar

Dimensions and Weight

LxWxH: 1.100x750x1.900mm

Weight: approx. 150kg

Required for Operation

230V, 50/60Hz, 1 phase

 

 

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