2. Reduced Blowdown Time
Unstable 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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