Capacity control in refrigeration systems
Applications
The efficient control of the capacity and temperature in refrigeration systems is an important topic in refrigeration engineering. With ET 426 different methods of capacity control can be investigated. For this purpose a refrigeration circuit with two refrigeration chambers is available in which a cooling load is generated using an adjustable heater. Ventilators in both refrigeration chambers ensure an even temperature distribution.
Technical Specifications
- methods for capacity control in refrigeration systems
- refrigeration circuit with compressor, condenser and evaporators in insulated refrigeration chambers
- each refrigeration chamber with adjustable heater to generate a cooling load, thermostatic expansion valve and 2 ventilators
- 1 refrigeration chamber with refrigeration controller for temperature control; solenoid valve, ventilators and defrost heater as actuators
- 1 refrigeration chamber with thermostat, solenoid valve and evaporation pressure controller for temperature control
- compressor with variable speed via frequency converter
- capacity controller in the compressor bypass
- refrigerant R513A, GWP: 631
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