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Products | Thermodynamics, Heating and Sanitary Systems | Refrigeration and Air Conditioning | ET 915 | ET 915.04

ET 915.04

Air Conditioner Module

Technical Description

The experimental set-up is clearly arranged on a metal board which is placed on the base unit ET 915. The pipe connection between base unit and auxiliary module is made by self-sealing Schrader valves. The individual components of the unit, in this case fan, heater, compressor, humidifier and solenoid valves, are controlled by the software (included in the scope of supply of the base unit). ET 915.04 is a model of an air conditioner. The refrigerating capacity is generated by an evaporator. A fan moves the air that is to be cooled through a ventilation duct, in which a humidifying device has been integrated. The air can be warmed with heating elements. Solenoid valves allow to operate the unit with a capillary tube or an expansion valve as the expansion element.

Learning Objectives / Experiments

- Familiarisation with air conditioning
- Experiments on indoor air conditioning
- Heating and cooling on an h-ω diagram
- Humidifying and dehumidifying on an h-ω diagram
- Familiarisation with various expansion elements:
operation with a capillary tube
operation with an expansion valve
- Function of an evaporator
- Fault finding and simulation

Features

* Instructional program for air conditioning₁
* Complete model of an air conditioner₁
* Various operating modes possible₁
* Processing measured data in a PC₁
* Controlling components by software₁
* Fault simulation via software

Specification

[1] Auxiliary module with the model of an air
conditioner
[2] To be used with ET 915 Base Condensing Unit
[3] Ventilation duct 136x136mm with orifice di 25mm, air humidifier and viewing window
[4] 2 expansion elements for lamellar evaporator: expansion valve, capillary tube: 1m
[5] Radial fan
[6] 2 electrical heaters (preheater and reheater)
[7] Measurement of diff. pressure with pitot tube
[8] Instrumentation: electronic sensors
[9] 2 solenoid valves to configure operation mode
[10] Solenoid valves, equipment switches and fault simulation activated via software

Technical Data

2 electrical heaters: 150W each
Humidifier with fan

- electrical heater: 200W

- axial fan for humidifier: 10W,

max. flow rate: 50mł/h

- humidifier fitted with fill level indicator and float type
switch to cut-off heater
Radial fan: 80W

- max. flow rate: 255mł/h

- max. head: 174mmWC

Measuring range of sensors
- 2x temperature: -40...150°C
- 1x differential pressure: 0...10mbar
- 2x combined temperature-humidity: 0...50°C,
5...100% rel. humidity

Dimensions and Weight

l x w x h : 950 x 340 x 600 mm
Weight : approx. 35 kg

Scope of Delivery

1 auxiliary module, filled with refrigerant

Order Details

061.91504 ET 915.04 Air Conditioner Module