Shree Budhpuri Kripa Engineers

Jagadhri Road, Ambala, Haryana

The test rig provides the study of a Diesel engine performance. The rig comprises of a four stroke 4 cylinder Diesel engine coupled to a rope brake dynamometer / electrical dynamometer or Eddy Current Dynamometer. In rope brake dynamometer a water-cooled brake drum along with spring ba1ances, comprises rope brake. For Electrical dynamometer rheostat/load bank is used as loading arrangement. With the help of various measurements provided the test ring can determine BHP, IHP mechanical and thermal efficiencies, air fuel ratio, specific, fuel consumption and heat balance sheet at various loads.

Specifications :

• Engine -  Four stroke 4 cylinder petrol engine, Water cooled, variable speed petrol engine of jeepsy, car or equavailent.
• Dynamometer Rope brake - Rope wound around water-cooled brake drum and spring balance.
• Electrical - Suitable capacity Generator and water rheostat/load bank with load measurement.
• Air intake measurement arrangement.
• Fuel intake measurement arrangement.
• Multichannel Digital Temperature Indicator and rpm meter for rpm measurement.
• Water circulated exhaust gas calorimeter.

The whole unit is mounted on a sturdy frame. A technical manual accompanies the unit.

Service Required :

• Water supply about 10 lit/min.
• 230 V, 5A. AC, supply with earthing connection.
• A hand tachometer.

The unit consists of ducting fitted with various air conditioning components. Airflow is generated by an axial flow fan and in the airflow, heaters, cooling coil and steam humidifier connection is provided. Cooling circuit consists of a hermetic compressor; air cooled condenser, thermostatic expansion valve and evaporator (i.e. cooling coil). Measurements of various parameters Torn cooling cycle and heating cycle are provided and students can easily visualize and understand the basic principles of air conditioning.

Following experiments can be conducted on the unit :

• Cooling of atmospheric air.
• Heating of atmospheric air.
• Humidification of atmospheric air.
• Dehumidification and heating of atmospheric air.

(Cooling coil acts as dehumidifier at reduced airflow.)

Services Required :

• 440 V, 15 A, 3 Phase supply with earthing connection.
• Floor space area about 3 m. X 2 m.

The test rig comprises of a two-stage air compressor fitted with an air tank with orifice, pressure gauges and energy meter to measure the input & Temperature indicator measures the temperatures at various points. The compressor is connected with the motor, and is provided with air relief valve and a pressure switch. The unit determines volumetric efficiency and isothermal efficiency at various discharge pressures

Specifications:

• Air compressor - Double cylinder connected with Three - phase motor
• Air tank and orifice with water manometer for air intake measurement.
• Pressure gauges at outlet on both stages.
• Digital temperature indicator and RPM Meter for rpm measurement.
• Energy meter to measure input power.

Services Required:

• Floor space of 2, 5 X 1.5m.
• 440 V, 15A, 3ph. AC supply with neutral and earthing connection.
• A hand tachometer.

The test rig is designed for the study of vapour Compression refrigeration cycle by way of demonstration and experimentation. Cooling circuit consists of a hermetic compressor; air cooled condenser, thermostatic expansion valve and evaporator (i.e. cooling coil). Measurements of various parameters Torn cooling cycle and heating cycle are provided and students can easily visualize and understand the basic principles of air conditioning.

Experimentation :

• To Study the Vapour Compression refrigerator cycle.
• To Calculate Co-efficient of performance and draw P-H Diagram.

Utilities Required:

• Electric supply 5A-220 V AC
• Water supply and drainage
• Floor area : 1.3 m x 1.2m