Basic Refrigeration Trainer Bench & Accessories Model RAC 076


Sci-tech Basic Refrigeration Trainer Bench Model RAC 076 practical experiments relating to the operation of a refrigeration system can be implemented by dealing with differently configured compression refrigeration circuits. The components used are common in refrigeration and therefore closely related to practice.


* Set-up of the most varied refrigeration circuits using modular component kits

* Clear arrangement of components

Item Description

The base unit RAC 076 includes the main components of a refrigeration circuit: a condensing unit with compressor, condenser and receiver and a refrigeration chamber with integrated evaporator, fan for forced ventilation and an electric defrost heater. A pressure switch protects the compressor against excessive pressure. The refrigerant flow can be modified via shut-off valves. Together with the components from e.g. heat exchanger, flow meter or manometer, simple refrigeration circuits are realised. For continued experiments additional refrigeration components are used, e.g. post-injection valve, capacity controller or defrost timer. All components of the training system have ball valves at the connections. Using the required accessory kit, the components are connected into a complete refrigeration system. For the complete experimental set-up, laboratory workplace with frame for mounting the components and power supply, is required. The CFC-free refrigerant R134a serves as working medium. With the service set additional exercises for the filling and evacuation of refrigeration systems are carried out.

Technical Specifications

[1] base unit for the refrigeration training system
[2] extension with components for basic experiments using simple refrigeration circuits
[3] extension with components for advanced experiments in refrigeration systems
[4] condensing unit, consisting of hermetic compressor, condenser, receiver, pressure switches and shut-off valves
[5] insulated refrigeration chamber with integrated evaporator, electric defrost heater and condensate drip tray
[6] refrigeration chamber, condensing unit and power supply equipped with shock-proof lab jacks
[7] refrigerant R134a, CFC-free

Technical Specifications
Air-cooled condensing unit
– power consumption: 367W at -10/32°C
– refrigeration capacity: 731W at -10/32°C
– max. volumetric air flow rate: 850m³/h
– receiver: 1,4L
Evaporator with fan
– capacity: 190W at t=2°C, ΔT=8K
– cooling surface: 1,81m²
– max. volumetric air flow rate: 140m³/h
– electric defrost heater: 50W/m