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Products | Thermodynamics, Heating and Sanitary Systems | Refrigeration and Air Conditioning | ET 915 | ET 915.01

ET 915.01

Single Chamber Refrigerator 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 via self-locking Schrader valves. The individual components of the unit, in this case temperature control, fans, heater, compressor and solenoid valves, are controlled by the software (included in the scope of supply of the base unit). ET 915.01 is a model of a refrigerator. The refrigerating capacity is generated by an evaporator in an enclosed chamber. A blower is used to help achieve the even distribution of temperatures in the chamber. In addition, a heater can be used to simulate a cooling load. Solenoid valves permit the operation of the unit with a capillary tube or with an expansion valve as the expansion element.

Learning Objectives / Experiments

Familiarisation with a cooling system and its main
components
Familiarisation with various expansion elements:
- Operation with a capillary tube
- Operation with an expansion valve
Effects of a cooling load
Cyclic process on the p-h state diagram
Operating mode of an evaporator
Fault finding and simulation

Features

Instructional program for refrigeration engineering
Simple model of a household refrigerator
Processing measured data in a PC
Control of components via software
Fault simulation via software

Specification

[1] Auxiliary module with a refrigerator model
[2] To be used with ET 915
[3] Closed chamber with transparent cover cooled by an evaporator
[4] Electrical heater to generate a cooling load
[5] 2 expansion elements: expansion valve and capillary tube
[6] Instrumentation: electronic sensors
[7] Operating modes of the unit can be configured via 2 solenoid valves
[8] Solenoid valves, equipment switches and fault simulation activated via software
[9] Linking of modules with Schrader valves

Technical Data

Electric heating element PTC to generate a cooling load: 210W
Lamellar evaporator with fan, axial fan: 18W, max. flow rate: 160mł/h
Capillary tube: length 2m
Measuring range of sensors:
- 3x temperature: -40...150°C
- 1x pressure: -1...9bar

Dimensions and Weight

l x w x h : 800 x 360 x 550 mm
Weight : approx. 30 kg

Scope of Delivery

1 auxiliary module, filled with refrigerant

Order Details

061.91501 ET 915.01 Single Chamber Refrigerator Module