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Products | Thermodynamics, Heating and Sanitary Systems | Refrigeration and Air Conditioning | ET 400

ET 400

Refrigeration Training System

Technical Description

The system is designed for the demonstration of the cyclic process on the p-h state diagram. The experimental set-up is clearly laid out on a metal panel. The use of commercially available components ensures a high degree of relevance to practice. A closed hot water circuit with electrical heater is used as a cooling load for the evaporator. The condenser is air-cooled. Electronic sensors provide measured values that are indicated on digital displays. The measured values are also transmitted to a data acquisition card that enables the data to be processed on a PC, e.g. the display of the cyclic process on a p-h state diagram.

Learning Objectives / Experiments

· Familiarisation with the layout of refrigeration
systems
· Familiarisation with the main components of
refrigeration systems
· Measuring relevant temperatures and pressures
· Cyclic process on a p-h state diagram
· Determination of the efficiency
· Determining the coefficient of performance

Features

Well laid out demonstration model of a refrigeration system
Processing of measured data on a PC
Clear layout on laboratory trolley
Sealed water circuit

Alternative products

ET 102 -- Heat Pump Training System / PC
ET 410 -- Refrigeration Technology Demonstration Panel
ET 411C -- Basic Cycle Refrigeration Trainer / PC
ET 413C -- Domestic Refrigeration Trainer / PC

Specification

[1] Mobile functional model of a refrigeration system
[2] lxwxh 1380x550x1850mm, 90kg
[3] PC data acquisition with LabView software under Windows NT/2000/XP
[4] Hermetic piston compressor
[5] Coaxial evaporator
[6] Closed warm water circuit with tank, heater and circulating pump as cooling load
[7] Condenser with 2 fans, fan 29W each
[8] Digital displays indicating flow, temperature and pressure
[9] Refrigerant R134a, CFC-free
[10] 230V, 50Hz, 1 ph. or 120V, 60Hz, 1 ph.

Technical Data

Piston compressor: power consumption: 97W at -10/32°C, refrigerating capacity: 222W at 5/32°C
Circulating pump, 3 stages, 60W: max. flow rate: 2.9mł/h, max. head: 4m
Coaxial evaproator: capacity: 2kW at 45°C condensing temperature, ΔT=7K
Measuring ranges:
2x pressure: -1...15bar, 1x power: 0...600W,
6x temperature: -40...150°C, 1x flow rate (water): 3...108ltr/h

Dimensions and Weight

l x w x h : 1380 x 550 x 1850 mm
Weight : approx. 90 kg

Connections

230V, 50Hz, 1 ph. or 120V, 60Hz, 1 ph.

Scope of Delivery

1 unit, fully assembled and filled with refrigerant, 1 data acquisition card with software, 1 instruction manual

Order Details

061.40000 ET 400 Refrigeration Training System