Leading Manufacturers of Oxygen, Nitrogen and Other Industrial Gas Plants

Expansion Engine

The Expansion Engine is a vertical single acting reciprocating type engine.

Expansion Engine

SANGHI - ORG Expansion Engine

High Pressure Expansion Engine

SANGHI - ORG High Pressure Expansion Engine


The Electric Motor is used initially to start the machine. Thereafter the engine is moved by the air pressure itself and during which time, the engine motor retains the speed by acting as a brake. Since work is done by air in rotating the Flywheel, it loses its heat content (enthalpy). Thus the air gets cooled. This cooling is more than that of an expansion in an expansion valve.
The Expansion Engine can be considered as three major units:
a. The drive unit.
b. The Cylinder Unit for air expansion and
c. The Hydraulic Systems for operating the Valves.

The High Pressure Expansion Engine is used for liquid Plants.

TECHNICAL DATA SANGHI-ORG 80 SANGHI-ORG 100 SANGHI-ORG 200 SANGHI-ORG 300
Type of Expansion Engine SEM 0.5/1 SEM 0.5/1 SEM 0.5/1 SEM 0.5/1
No. of Cylinders 1 1 2 2
Diameter of Cylinder Bore 70 mm 80 mm 85 mm 90 mm
Piston Stroke 125 mm 125 mm 125 mm 125 mm
Speed 210 RPM 210 RPM 210 RPM 210 RPM
Inlet Air Pressure 60 kgs/cm2 60kgs/cm2 60kgs/cm2 60kgs/cm2
Outlet Air Pressure 5 kgs/cm2 5 kgs/cm2 5 kgs/cm2 5 kgs/cm2
Throughput Volume at 60 kgs/cm2 and 80 C (about) 300 Ncu.m./Hr 400 Ncu.m./Hr 560 Ncu.m./Hr 828 NM3./Hr
Throughput Volume at 50 kgs/cm2 and -750 C (about) 120-390
Ncu.m./Hr
200-400
Ncu.m./Hr
400-560
Ncu.m./Hr
550-830
NM3/hr.
Inlet Valve opening time cam setting position 8 8 8 8
Power required or supplied 7.5 KW 7.5 KW 15 KW 30 KW
Piston Head Clear 1.2 - or + 0.2 mm 1.2 -or + 0.2 mm 1.2 -or + 0.2 mm 1.2 + 0.2 mm
Inlet Valve Pestel Clearance 0.4 to 0.5 mm 0.4 to 0.5 mm 0.4 to 0.5 mm 0.4 to 0.5 mm
Outlet Valve Pestel Clearence 0.3 to 0.4 mm 0.3 to 0.4 mm 0.3 to 0.4 mm 0.3 to 0.4 mm

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