Home           Products           Company           Contact us     
> Fundamentals of Thermodynamics
> Applied Thermodynamics
> Renewable Energies
> Power Engines and Machines
> Internal Combustion Engines
> Refrigeration and Air Conditioning Technology
> Heating and Ventilation in Buildings
> Sanitary Systems
Products  |  Thermal Engineering and HVAC  |  Refrigeration and Air Conditioning Technology  |  ET 915
ET 915 HSI Training System Refrigeration and Air Conditioning Technology, Base Unit Show data sheet (pdf file) Print page
Technical Description

  The base unit ET 915 is, dependent on the objective of the experiment, extended into complete refrigeration circuit with one of the models available as accessories (ET 915.01 refrigerator, ET 915.02 refrigeration system with refrigeration and freezing stage, ET 915.06 simple air conditioning system, ET 915.07 air conditioning).
  The main components of ET 915 are compressor, condenser and receiver plus electrical and communications systems. The models are plugged onto the base unit and connected hydraulically with refrigerant hoses and electrically with cables. Self-sealing couplings reduce the refrigerant loss to a minimum. All components are arranged well visible to allow their operation to be monitored.
  The modern and powerful software is an integral part of the training system in the form of hardware/software integration (HSI). It enables the comfortable execution and analysis of the experiments. The experimental unit is connected to the PC via a USB interface.
  The educational software guides step by step through the experiments. With explanatory texts and illustrations it significantly aids the understanding of the theoretical principles. Temperatures and pressures in the system are recorded by sensors and displayed dynamically in the educational software. The effect of parameter changes can be tracked in log p-h and h-x diagrams. The system is also controlled via the software.

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


Learning Objectives / Experiments

In conjunction with ET 915.01, ET 915.02, ET 915.06 and ET 915.07
- Fundamentals of the refrigeration cycle
- Fundamentals of air conditioning
- Components in a refrigeration system/air

  conditioning system
- System operation
- Fault finding


* Base unit for the set-up of basic experiments in

  refrigeration and air conditioning technology1
* Modern learning environment through hardware/

  software integration (HSI)1
* Four models on refrigeration and air conditioning


Available accessories
ET 915.01 -- Refrigerator Model
ET 915.02 -- Model of a Refrigeration System with Refrigeration and Freezing Stage
ET 915.06 -- Model of a Simple Air Conditioning System
ET 915.07 -- Air Conditioning Model
ET 915 HSI Training System for Refrigeration and Air Conditioning Technology

[1] Basic experiments on the operation of refrigeration and air conditioning systems by combining the base unit and models
[2] GUNT training system with HSI technology
[3] Condensing unit consisting of compressor, condenser and receiver
[4] Connection between condensing unit and model via refrigerant hoses
[5] Model attached securely on ET 915 with fasteners

[6] Manometer for refrigerant with temperature scale
[7] Refrigerant R134a, CFC-free
[8] System control via solenoid valves and software
[9] Functions of the LabVIEW software: educational software, data acquisition, system control
[10] LabVIEW software for data acquisition via USB under Windows XP or Windows Vista


Technical Data
Condensing unit
- refrigeration capacity: 340W at 0/32C
Receiver: 0,9L
Measuring ranges
- temperature: 1x -50...50C, 3x 0...100C
- pressure
  1x intake side: -1...9bar
  2x delivery side: -1...15bar
Dimensions and Weight
l x w x h: 850x630x320mm
Weight: approx. 40kg
Required for Operation
230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase
Scope of Delivery

1 condensing unit, filled with refrigerant

1 LabVIEW software CD + USB cable
1 set of instructional material

Order Details

061.91500  ET 915  HSI Training System

                             Refrigeration and Air Conditioning

                             Technology, Base Unit 

© 2005 G.U.N.T. Gerätebau GmbH