Reciprocating Compressor Module — MOE Lab Tender Details

Reciprocating Compressor Module

Allows students to study and perform tests on a reciprocating compressor:
to understand how it works and calculate its performance.
The equipment should connect to a Versatile Data Acquisition System

Experiments
Energy balance for a compressor
Variation of compressor performance with pressure
Variation of compressor performance with speed
Mechanical, volumetric and isothermal efficiencies
Thermodynamics of a compressor

Specifications
Maximum Compressor Speed 1100 rev.min-1
Compressor Oil – Shell Cordena Oil P68
Power: 1.5 kW (from Universal Dynamometer)
Free air delivery: Approximately 200 L.min–1 at 1000 rev.min-1
Number of cylinders: Two
Maximum Working Pressure: 6 to 7 bar (controlled by pressure-relief valve)
Pressure rating of vessel: 10 bar
Speed ratio 2:1 (Dynamometer to Compressor)
Diameter and area at inlet to orifice 27.2 mm and 0.000581 m2
Orifice diameter and area 12.5 mm and 0.000123 m2
Orifice Discharge Coefficient 0.61
Swept volume of the compressor 0.18 L.rev-1

Instruments and measurements:
Temperatures: 4x K Type Thermocouples and digital display
Pressures: Piezoelectric transducers and digital display (plus Bourdon gauge of vessel pressure for reference)
ΔP1: Two input (differential) pressure transducer – 2000 Pa
P2: Single input pressure transducer - 10 bar (gauge)
P3: Single input pressure transducer - 10 bar (gauge)
P4: (Internal) Absolute Atmospheric Pressure
Flow rate: orifice and differential pressure transducer
Torque, speed and power: shown by the digital display of the Universal Dynamometer
Nett dimensions and Weight: 1400 mm wide x 1700 mm high x 750 mm front to back, 175 kg