Description
This test set has two independently-controlled, motordriven compressors, intercooler and air receiver. It works as a single-stage, two-stage or two-stage compressor with intercooler. All controls and instrumentation are on an easy-to-operate mimic panel. Electric motors and low-maintenance toothed belts drive two twin-cylinder, air-cooled reciprocating compressors. Electronic drive units independently control both motors. Meters show motor electrical power consumption of each motor. A close-coupled load cell on each motor measures torque. A sensor on each motor measures speed, shown by a digital indicator. The product of the torque and speed gives true shaft power. To allow students to study different types of air compressor systems, diverter valves allow air to move in diff erent directions. These include: • From the first stage to the receiver • Directly to the second stage • To the second stage, by means of the integral water cooled intercooler Independent control of the two compressor speeds allows flexibility to match the two compressors under different conditions. Interlocks allow safe changes from one method of operation to another while the equipment works, and prevent misuse. For safety, all pressurised lines have relief valves.
Learning outcomes
Volumetric, mechanical and Isothermal efficiency
Indicated work done
Motor output power (compressor shaft power)
Pressure ratio
Temperature ratio
Inlet dryness calculations
P-V indicator diagram (needs optional pressure indicator)
Effect of inter-stage cooling on compressor total power requirements and eff ect on cycle temperatures
Effect of two-stage compression and inter-stage pressure on power requirements
Specifications
ATICO is committed to a programme of continuous improvement; hence we reserve the right to alter the design and product specification without prior notice.
Nett dimensions and weight:
1200 mm x 660 mm x 1600 mm and 440 kg
Packed Dimensions and Weight:
1380 mm x 810mm x 1910mm and 490 kg
Compressors:
Twin cylinders
Speed range 200-1000 rev.min–1
Maximum delivery pressure 10.3 bar
Operating Conditions
Operating environment:
Laboratory
Storage temprature range :
–25°C to +55°C (when packed for transport)
Operating temprature range :
+5°C to +40°C
Operating relative humidity range :
80% at temperatures < 31°C decreasing linearly to 50% at 40°C
