Blowdown Time

2. Reduced  Blowdown  Time

ReduceBlowdownTimeUnstable networks  ( systems ) frequently switch between load and idle [no-load]

Sample Calculation:

Energy losses due to blowdown

  • 60 kw Compressor
  • Discharge time approximately 1 minute
  • 15 load – idle cycle per hour
  • Receiver tank volume 2000 l
  • 4000 hours in operation per year
  • Energy cost RM0.25 per kwh

4000 hours per year   X   15 load – idle cycle per hour

60,000 load – idle cycles per year   X   1 minute

60,000 minutes blowdown =1000 hours blowdown time

Therefore;

Energy Loss = 1000 hours blowdown time   X   45/2 kw [ consumption when idling on blowdown]

22,500 kwh   X   25 cents

RM 5, 625.00 per year

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