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Cascade Refrigeration System Trainer Manufacturer,Supplier and Exporter in India

Product Code : EL-TWL-13141
Jlab Export is a leading Cascade Refrigeration System Trainer Manufacturer,and suppliers in India

A cascade system links two refrigeration circuits in series. The low stage condenser gives up its heat to the high stage evaporator in a shared heat exchanger. This trainer lets students experiment with and control such a multi stage compressor arrangement. They see how it reaches ultra low temperatures that a single stage system cannot reach economically.

Specifications

System type	Cascade (multi stage) compressor refrigeration
Use	Experimenting with and controlling a cascade compressor application
Application taught	Ultra low temperatures that a single stage system cannot reach economically
Minimum order quantity	1 unit
Dispatch time	Usually 14–18 working days
Manufacturer	JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India

Experiments with the Cascade Trainer

Before the cascade lesson, students find the limit of a single stage on the Refrigeration Test Rig. They pull the evaporator down and note how the pressure ratio and discharge temperature rise as the suction pressure falls. On the cascade trainer they then start the high stage first, wait for the cascade heat exchanger to cool and start the low stage.

With both stages running, students log the pressures of each circuit and the temperatures around the cascade heat exchanger. A Digital Clamp Meter on each compressor supply gives the current, and from it an estimate of the power drawn. The class then works out the overall coefficient of performance: the low stage cooling effect divided by the power taken by both compressors.

Frequently Asked Questions

Why use two circuits instead of one?
One compressor pulling a very low evaporator temperature has to work across a very high pressure ratio. Its efficiency falls and its discharge temperature climbs. Splitting the lift between two circuits keeps each stage at a moderate ratio.

What is the cascade heat exchanger?
It is the high stage evaporator and the low stage condenser in one unit. Low stage refrigerant condenses on one side by giving its heat to high stage refrigerant boiling on the other side. The high stage then carries that heat on to its own condenser.

Why do cascade systems often use two refrigerants?
Each circuit can then use a refrigerant suited to its own temperature band. The low stage needs workable pressures at very low temperatures, while the high stage condenses against room air or water.

Where are cascade systems used?
Wherever temperatures below the economical reach of a single stage are needed, such as ultra low temperature freezers, environmental test chambers and industrial processes. In industry the same principle can reach cryogenic temperatures.

In what order are the stages started?
The high stage starts first. Once it has cooled the cascade heat exchanger, the low stage starts. If the low stage ran first, it would have no cold surface to condense on and its discharge pressure would climb.