Double Stage Air Compressor Test Rig for engineering schools

Double Stage Air Compressor Test Rig

The Double Stage Air Compressor Test Rig is a comprehensive laboratory training system designed to study the performance characteristics and operating principles of a two-stage reciprocating air compressor. It enables students to perform practical experiments on air compression, thermodynamic processes, compressor efficiency, and performance evaluation.

The system consists of a double-stage, double-cylinder reciprocating air compressor driven by a 2 HP electric motor through a belt drive. The compressor discharge is connected to a 150-litre air receiver, while the suction side is connected to a separate air tank fitted with a calibrated orifice meter and water manometer for accurate airflow measurement. An adjustable airflow control valve regulates the suction flow to facilitate various operating conditions.

Temperature measurements at different stages of compression are obtained using precision RTD PT-100 sensors, while pressure gauges monitor both intermediate and final delivery pressures. The rig also incorporates an RPM measurement system using a proximity sensor and digital indicator, allowing complete performance analysis during experimentation.

Designed for engineering laboratories and technical training institutes, the test rig provides hands-on experience in compressor operation, efficiency calculations, and thermodynamic analysis.

Experiments

• Determination of volumetric efficiency

• Calculation of isothermal horsepower

• Determination of compression ratio

• Study of two-stage air compression

• Performance characteristics of reciprocating compressors

• Pressure and temperature analysis during compression

• Airflow measurement using an orifice meter

• Compressor efficiency evaluation

Technical Specifications

• Compressor Type: Double Stage, Double Cylinder, Reciprocating

• Maximum Capacity: 6.9 CFM

• Maximum Working Pressure: 7 kg/cm²

• Drive Motor: 2 HP, Single Phase AC Motor

• Motor Supply: 220 V AC, 50 Hz, Single Phase

• Air Receiver Capacity: 150 Litres

• Flow Measurement: Calibrated Orifice Meter with Water Manometer

• Temperature Measurement: Four RTD PT-100 Sensors

• Pressure Measurement: Bourdon Type Pressure Gauges

• Speed Measurement: Digital RPM Indicator with Proximity Sensor

• Spring Balance: 10 kg Dial Type

• Safety Features: Safety Valve, Shut-Off Valve, MCB Overload Protection

Utilities Required

• Electrical Supply: 220 V AC, Single Phase, 2 kW

• Floor Space Required: 2.5 × 1.25 m

Key Features

• Heavy-duty double-stage reciprocating air compressor

• Complete instrumentation for pressure, temperature, flow, and speed measurement

• Transparent experimental setup for educational demonstrations

• Accurate airflow measurement using an orifice meter

• Precision RTD temperature sensors

• Digital RPM measurement system

• Large-capacity air receiver with integrated safety devices

• Belt-driven motor with stable operation

• Compact and laboratory-friendly design

• Ideal for repeated educational and research use

Applications

• Thermodynamics Laboratories

• Fluid Mechanics Laboratories

• Mechanical Engineering Education

• Heat Transfer and Energy Studies

• Compressor Performance Testing

• Technical and Vocational Training

• Research and Development Laboratories

• Industrial Maintenance Training

Industries Served

• Engineering Colleges and Universities

• Technical Training Institutes

• Polytechnic Colleges

• Mechanical Engineering Departments

• Industrial Training Centres

• Research Laboratories

• Manufacturing Industries

• Compressor Maintenance Training Facilities