Success Story & Application

Success Story & Application

SCFM’S CUSTOM SOLUTION CREATED FUEL COST SAVINGS OF $829,572 PER YEAR

The Challenge

We were approached about gas compression for a gathering system compression location where our customer was considering an oil flooded twin screw.  

The Solution    

Original Design:

Oil-flooded screw compressor package with a single 1000 HP (4000V) electric motor driven twin screw (direct driven – no gear)

1. Capacity (design):         8.0 MMSCFD @ 15 PSI inlet and 75 PSI discharge pressures, requiring 752 BHP.  
2. Delivery:                       Approximately 30 weeks ARO.  

SCFM Design:

Oil-flooded screw compressor package with a two 400 HP (480V) electric motors, each driving single screws (direct driven – no gear)

Capacity (design):          8.0 MMSCFD @ 15 PSI inlet and 75 PSI discharge pressures, requiring 625 BHP (total for both screws).  

Delivery:            

Approximately 24 weeks ARO.  

The single screws are more efficient fully loaded than any twin screw and even more efficient partly loaded than any twin screw.  The single screws are also lower maintenance $ in both labor and parts than any twin screw.  

The Results

Hp/MM was lowered from 94 to 78 a reduction of 17%.  Fuel cost savings at $0.05 per kwh total $829,572 per year.  Consideration needs to be given to the additional costs associated with two single screw compressor units compared to one twin screw unit but these are nowhere near the fuel savings for one year.  This comparison has also not taken into account the earlier delivery schedule allowing operations to start sooner.