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Products | Thermodynamics, Heating and Sanitary Systems | Refrigeration and Air Conditioning | ET 412C

ET 412C

Industrial Refrigeration Trainer / PC

Technical Description

The ET 412C Industrial Refrigeration Trainer with PC Data Acquisition is a fully functional model of a refrigeration system including 2 evaporators that represent a refrigeration stage and a deep-freezing stage. The unit comprises typical components from refrigeration engineering so lectures given using this model are relevant in practice. The system contains numerous electronic transducers that measures pressures, temperatures, flow rates and power. The measured values are directly indicated at the trainer and can be further processed with a PC data acquisition system. 18 different faults can be simulated via switches. Additionally, it is possible to simulate faults as blocked up pipes or pipes with reduced cross-section due to sludge via manual valves included in the trainer.

Learning Objectives / Experiments

- Fundamental principles of refrigeration engineering
- Familiarisation with the basic layout of a
refrigeration system for the parallel operation of
2 evaporators (e.g. cooling stage and deep-freezing
stage)
- Components in refrigeration systems
- Familiarisation with cyclic processes
- Illustration of cyclic processes on a p-h state
diagram
- Calculation of cooling capacity and refrigeration
capacity of the cooling stages
- Faultfinding

Features

* Refrigeration trainer with industrial components₁
* Familiarisation with a thermodynamic cyclic process
with normal and deep-freezing stage₁
* Integrated PC data acquisition₁
* Fault simulation

Alternative products

ET 422 -- Commercial Refrigeration Unit with Fault Simulation
ET 426 -- Capacity Control Methods in Refrigeration
ET 915 -- Base Condensing Unit

Specification

[1] Mobile refrigeration system for the parallel operation of 2 evaporators
[2] lxwxh 2000x770x1900mm, approx. 180kg
[3] Refrigeration circuit with compressor, condenser, 2 evaporators, 2 expansion valves and 1 intake pressure regulator
[4] 12 temperature measuring points, 3 pressure meas. points, compressor power measurement
[5] Evaporators mounted in cooling compartments
[6] Pipework on clearly laid out panel
[7] PC data acquisition with LabView software and PCI card, for use with Windows XP
[8] Refrigerant R134a, CFC-free

Technical Data

Hermetic reciprocating compressor
- max. power consumption 266W
- refrigerating capacity: 270W at -10/22°C
Condenser with fan

- airflow: 290m³/h

- condenser surface: 1.5m²
Evaporator surface at cooler: 1.12m²
Evaporator surface at freezer: 2.42m²
Rotameter 1.5...23.5L/h

Dimensions and Weight

l x w x h : 2000 x 770 x 1900 mm
Weight : approx. 180 kg

Connections

230V, 50/60Hz, 1 phase or 120V, 50/60Hz, 1 phase

Scope of Delivery

1 refrigeration system

1 data acquisition card with software

1 instruction manual

Order Details

061.412C0 ET 412C Industrial Refrigeration
Trainer / PC