| Summary specifications for the APOLLO range of CNG compressors is as below: |
| |
|
| Make and Model |
UNIGAS APOLLO VR-550 |
| Compressor configuration |
Vee-90 |
| Number of Cylinders |
4 |
| Number of stages |
4 |
| Compressor design |
Pressurised crankcase, trunk piston |
| Gas inlet pressure (min-max) |
0.345-1.035 barg (~5 - 15 psig) |
| Gas discharge pressure |
250 barg (~3,600 psig) |
| |
|
| Gas discharge capacity @ 15 psig |
400 Nm3/hr, 110 kW motor, 697 rpm |
| Gas discharge capacity @ 15 psig |
340 Nm3/hr, 90 kW motor, 581 rpm |
| Gas discharge capacity @ 8 psig |
300 Nm3/hr, 90 kW motor, 697 rpm |
| [at an ambient temperature of 15 deg C and sea level altitude; tolerances on discharge capacity +/- 5%] |
| |
|
| Compressor speed |
697 rpm (max.) |
| Compressor pulley outside diameter |
650 mm |
| Piston stroke |
174 mm |
| Piston speed |
4 m/sec (max.) @ 697 rpm |
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|
| Cylinder bores - |
|
| 1st stage |
210 mm |
| 2nd stage |
127 mm |
| 3rd stage |
65 mm |
| 4th stage |
35 mm |
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|
| Cylinder jacket cooling |
water |
| Inter-stage gas cooling |
water |
| Gas after-cooler |
water |
| Cooling system |
Cooling Tower (70 RT min.) |
| Water circulating pumps |
Electric motor driven centrifugal pumps, 2 nos; |
| |
250 litres/min @ 10m head |
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|
| Electric Motor size options |
110kW (150hp) for 400 Nm3/hr @ 15 psig inlet |
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90 kW (120hp) for 340 Nm3/hr @ 15 psig inlet |
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90 kW (120hp) for 300 Nm3/hr @ 8 psig inlet |
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|
| Lubrication |
pressurised full flow oil filter with internal relief and oil |
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cooler. Pressure fed big-end bearings, splash lubricated |
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main bearings, small-end bearings and pistons |
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|
| Crankcase oil capacity |
22 litres |
| Direction of rotation |
Anti-Clockwise viewed from drive end |
| Ambient temperature range |
0 - 50 deg C |
| |
|
| Overall Dimensions & Weight |
2.4 m Wide x 1.8 m Deep x 2.0 m High approx. |
| |
3,500 kgs (without oil & water) approx. |
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|
.JPG)
