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Capacity Control In Refrigeration Systems Didactic Equipment Vocational Education Equipment Refrigeration Training Equipment

Item No.: ET 426
Capacity Control In Refrigeration Systems Didactic Equipment Vocational Education Equipment Refrigeration Training Equipment
Description
ET 426 Capacity Control In Refrigeration Systems Didactic Equipment Vocational Education Equipment Refrigeration Training Equipment

Investigation of different capacity control methods
Features
- investigation of different capacity control methods
- open compressor with variable speed
- adjustable cooling load via heater
- controlled defrosting with temperature specification
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 ventilators on and off
Specification
[1] methods for capacity control in refrigeration systems
[2] refrigeration circuit with compressor, condenser and evaporators in insulated refrigeration chambers
[3] each refrigeration chamber with adjustable heater to generate a cooling load, thermostatic expansion valve and 2 ventilators
[4] 1 refrigeration chamber with refrigeration controller for temperature control; solenoid valve, ventilators 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 R513A, GWP: 631


Technical data
Compressor
- refrigeration capacity: approx. 560W at -5/25°C and 1450min-1
- drive motor: 550W
2 heaters: approx. 500W
4 ventilators: max. volumetric air flow rate: approx. 36,5m3/h
1 defrost heater: approx. 75W
Refrigeration controller
- 3 inputs
- 3 outputs
Evaporation pressure controller: 0...5,5bar
Thermostat: -5...20°C
Capacity controller: 0,2...6bar
Refrigerant
- R513A
- GWP: 631
- filling volume: 1kg
- CO2-equivalent: 0,6t
Measuring ranges
- speed: compressor 465...975min-1
- temperature: 3x -60...50°C
- power: heater 2x 0...1000W
- pressure: 3x -1...9bar; 1x -1...24bar
230V, 50Hz, 1 phase
230V, 60Hz, 1 phase; 230V, 60Hz, 3 phases
UL/CSA optional
LxWxH: 1100x750x1900mm
Weight: approx. 150kg