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Computer Controlled Vapour-Compression Refrigeration Unit Didactic Equipment Vocational Training Equipment Refrigeration Training Equipment

Item No.: RA1- MKII
Computer Controlled Vapour-Compression Refrigeration Unit Didactic Equipment Vocational Training Equipment Refrigeration Training Equipment
Description
RA1- MKII Computer Controlled Vapour-Compression Refrigeration Unit Didactic Equipment Vocational Training Equipment Refrigeration Training Equipment

DESCRIPTION
The RA1-MKII is a self contained computer controlled vapour-compression refrigeration system with automatic recording of all important process variables using an integral USB interface device.
Compressor speed and power supplied are displayed on the PC. The hermetically sealed refrigerant exiting the compressor passes through a condenser, receiver, filter, variable area flowmeter, expansion valve and evaporator before returning to the inlet side of the compressor.
TECHNICAL SPECIFICATIONS
Refrigeration system: Vapour-compression type
Refrigerant: R134a
Hermetically sealed compressor speed range: 2000 to 4400 RPM
Hermetically sealed compressor supply: 24V DC to speed controller of brush-less 3 phase DC motor
Hermetically sealed compressor rating: 7.11 cm3 (0.434 cu in) for high evaporator temperature with 7.2°C rating point
Condenser: Brazed plate heat exchanger using water as heat transfer medium
Evaporator: Brazed plate heat exchanger using water as heat transfer medium
Water reservoir: Working capacity 400 litres
Temperature sensors: NTC Thermistor
Refrigerant flowmeter: Variable area flowmeter


EXPERIMENTAL CONTENT
Gain an in-depth understanding of the vapour-compression process by changing the operation of different parts of the process and recording the response of the complete system
To operate vapour-compression refrigeration system and understand the relation between the hardware components and the refrigeration cycle
First Law of Thermodynamics – The law of conservation of energy
To investigate the effect on the refrigeration system of the flow of water through the condenser and to determine the optimum flow rate for a given load
To investigate the effect on the refrigeration system of the flow of water through the evaporator and to determine the optimum flow rate for a given system load
To investigate the effect of the flow of refrigerant through the refrigeration system, and whether there is an optimum flow rate
To investigate the effect of closing/opening the expansion valve on a refrigeration system, and to determine the optimum setting for a particular application
Coefficient of Performance (COP)
Thermodynamic system modelling
To perform appropriate energy balances and a detailed analysis of the performance of the refrigeration system