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Energy efficiency measures - Industrial - Compressed air

Template assignment

Base case
  • Rotary screw compressor
  • 200 cfm system, 75 hp motor, 100 psig
  • Usage: 100 cfm
  • Leakage: 20 cfm
  • Capacity control with inlet throttling
  • System is never turned off
Proposed case
  • Variable speed control
  • Reduce usage by 20%
  • Fix 75% of leaks
  • Automatic shutdown of system outside working hours (60 hours per week)
  • Estimate cost for efficiency measures $70,000
  • Reduction in service costs: $500 (O&M)
Other opportunities
  • Upgrade to premium efficiency motor: $5,000
  • Modify the air intake location: $10,000
Solution

The worked-out solution is the data file selected from within the RETScreen Project Database. The user automatically downloads the Project Database file while downloading the RETScreen software.