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Products  |  Thermodynamics, Heating and Sanitary Systems  |  Refrigeration and Air Conditioning  |  ET 620
ET 620 Full-Scale Air Conditioning Trainer Show data sheet (pdf file) Print page
Technical Description

The experimental set-up constitutes a real air conditioning system. The performance of the system is sufficient to air condition a laboratory room.
The air conditioning system contains a filter insert, a blower with electronically controlled speed, a direct evaporator, an electric heating coil and a humidification section. The following functions are available: Heating / cooling and humidifying / dehumidifying. For these purposes the components can be controlled either individually in manual mode or by a central PLC climatic controller in automatic mode. The climatic controller allows temperature and humidity to be controlled independently. The timer program allows values to be varied through the day or through the week, as in real life. Pressure loss can be measured in each section of the duct. All popular components such as filters, heaters / coolers, louvered flaps, outlets, examination flaps and fire dampers are fitted and can be explained. A standard connection spigot permits a link to an external ventilation system, so that an existing room can be air-conditioned.
Because of the heat it dissipates, the condenser is not installed in the room to be air-conditioned.

The well-structured instructional material outlines the technological fundamentals and provides a step-by-step guide through the experiments.
 

Learning Objectives / Experiments

- Layout and maintenance of a ventilation and air

  conditioning system
- Principles of air conditioning a room (h-ω diagram)
- Explanation of the components: filter, heater, cooler,

  humidifier, condenser, controller, flaps, outlets
- Function of safety devices
- Measurement of pressure changes and pressure

  losses
- Effect of cooler, heater and humidifier on the air

  condition at the outlet
- Investigation of the control response of an

  automatic air conditioning system, determination of

  limiting factors

Features

* Complete ventilation and air conditioning system for

  laboratory use1
* Highly relevant practical experience thanks to full

  scale and use of commercially-available components1
* Manual or automatic mode using commercially-

  available PLC climatic controller1
* Can be connected to external ventilation systems

Alternative products
ET 600 -- Open Duct Air Conditioning Trainer
ET 611 -- Air Conditioning System with Climate Chamber
HL 720 -- Ventilation System Trainer
Specification

[1] Mobile experimentation stand air conditioner
[2] System with condenser / direct evaporator as cooler, multi-stage heater, variable-speed fan, vapor humidifier and PLC climatic controller
[3] Ventilation duct of galvanized sheet metal with viewing windows and pressure measurement spigot
[4] Duct with typical elements: filter, ceiling outlet, weather protection grille, louvered flap, ventilation grille, fire damper, examination flap, noise muffler link
[5] Duct cross-section: lower: w x h: 630x630mm, upper: w x h: 358x358mm
[6] External standard connection spigot
[7] CFC-free refrigerant R404a
 

Technical Data

Fan
- air quantity: 2500m³/h
- overall gauge pressure: 715Pa
- drive motor power: 1.1kW
Heater, 4-stage: 0-5-10-15-20kW
Cooler - direct evaporator
- overall refrigeration power: 27kW
Cooler
- condenser
- refrigeration power: approx. 16.6kW at 7.2/32°C
- power consumption: approx. 7.4kW at 7.2/32°C
Vapor humidifier
- vapor generation: 10kg/h
- power consumption: 7.5kW
Inclined tube manometer: 0...750Pa
External standard connection spigot: 400x400mm
Ceiling disc valve: DN 125

 

Dimensions and Weight
l x w x h : 4000 x 810 x 1800 mm
Weight : approx. 380 kg
Connections
400V, 50Hz, 3 phase or 230V, CSA, 3 phase
Scope of Delivery
1 experimentation stand
1 condenser
1 vapor humidifier
1 set of hoses + cables
1 user guide for experiments
Order Details
061.62000   ET 620  Full-Scale Air Conditioning 
                     Trainer
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© 2005 G.U.N.T. Gerätebau GmbH