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Products  |  Thermal Engineering and HVAC  |  Refrigeration and Air Conditioning Technology  |  ET 611
ET 611 Air Conditioning System with Chamber Show data sheet (pdf file) Print page
Technical Description

Comfort is of great importance in the air conditioning of rooms and buildings. The comfort depends on the temperature, the relative humidity and the flow velocity of the air. According to DIN 13779 a so-called "comfort zone" has been defined which specifies the values an air conditioning system should achieve.
  ET 611 is a full air conditioning system with comprehensive test options. The effect of the air humidity and temperature on the comfort is examined. The system has a climatic chamber designed for test persons to be inside. This allows the trainee to study the effect of different system operating states on his own well-being. The components used, such as radial fan, electric air heater, steam humidifier and water chiller are all used in commercial air conditioning and ventilation technology. A PLC air conditioning controller monitors and controls all functions. In addition to the automatic operation it also enables the manual operation of the system.
  The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.

Learning Objectives / Experiments

- Design, operation and operating behaviour of a

  real air conditioning system
- Recirculating and outer air operation
- Changes of state in the h-x diagram for humid air:

  heating, cooling, humidifying or dehumidifying,

- Application of the mixing line
- Comfort studies, limit of comfortable humidity
- Energy balance in the Sankey diagram
- PLC air conditioning controller
  * humidity control
  * temperature control
  * manual or automatic operation


* Real air conditioning system with water chiller and

  climatic chamber1
* Chamber for comfort investigations, suitable for

  test persons to be inside1
* Air conditioning controller with integrated PLC1
* Data acquisition by software

Alternative products
ET 600 -- Conditioning of Room Air
ET 605 -- Air Conditioning System Model
ET 620 -- Air Conditioning and Ventilation System
HL 720 -- Ventilation System
ET 611 Air Conditioning System with Chamber for Comfort Investigations

[1] Air conditioning system with chamber for conditioning and air technology investigations

[2] Chamber suitable for test persons to be inside

[3] PLC air conditioning controller, manual and automatic operation

[4] Industrial components: fans, air-cooled water chiller, air cooler, air heater, steam humidifier
[5] Digital displays for air temperature, air humidity, air velocity, temperature of the cold water, power
[6] Refrigerant R407C, CFC-free

[7] LabVIEW software for data acquisition via USB under Windows XP or Windows Vista

Technical Data

PLC air conditioning controller
- 17 universal inputs, 4 analogue outputs,

  10 switching outputs
Radial fan
- power consumption: 0.75kW
- max. flow rate: 39m/min
- pressure difference: 450Pa
Air heater: 6x 250W each
Steam humidifier
- steam capacity: 6kg/h
- power consumption: 4.5kW
Water chiller
- power consumption: 2.1kW
- refrigeration capacity: 6.2kW at 32C, ΔT=5K
- fan, air flow: 3500m/h
- compressor, power consumption: 2kW
- pump, power consumption: 550W
Air cooler, capacity: 4.84kW

Measuring ranges
- flow rate (cold water): 0...1600L/h
- temperature: 8x 0...50C
- humidity: 6x 0...100%
- flow velocity: 2x 0...20m/s
- power: 4x 0...5kW

Dimensions and Weight
l x w x h: 2700 x 1480 x 1900 mm (system)
l x w x h: 1170 x 1170 x 2100 mm (chamber)
Weight: approx. 350 kg (system); approx. 200 kg (chamber)
Required for Operation
400V, 50/60Hz, 3 phases
Scope of Delivery

1 air conditioning system, filled with refrigerant

1 LabVIEW software CD + USB cable

1 set of instructional material

Order Details
061.61100  ET 611  Air Conditioning System with 
© 2005 G.U.N.T. Gerätebau GmbH