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Calculate your noise reduction and energy savings when installing an air nozzle
Our calculations are based on the following formulas and numbers
The calculations are based on the following table with measured figures for the pipe dimensions and Silvent’s air nozzles. The cost savings in the table are calculated assuming the cost of compressed air is 4,1 pence (GBP) per Nm3 and the blowing time is 4 hours per day.
Open pipe vs Silvent air nozzle
| Open pipe | ||
|---|---|---|
| Pipe interval | Noise Level | Air consumption |
| Ø mm | dB(A) | Nm3/h |
| 2 | 84 | 8 |
| 2.5 | 87 | 12 |
| 3 | 90 | 17 |
| 4 | 95 | 30 |
| 5 | 99 | 47 |
| 6 | 102 | 67 |
| 7 | 105 | 92 |
| 8 | 108 | 118 |
| 10 | 112 | 185 |
| 12 | 116 | 266 |
| 14 | 119 | 363 |
| 16 | 122 | 474 |
| 17 | 123 | 536 |
| 18 | 124 | 599 |
| 20 | 126 | 740 |
| 25 | 131 | 1159 |
| 38 | 139 | 2677 |
| Silvent air nozzle | |||
|---|---|---|---|
| Replace with | Noise reduction | Air savings | Annual savings |
| dB(A) % | Nm3/h % | GBP | |
| MJ4 | 8 43% | 4 50% | 171 |
| MJ5 | 8 43% | 2 17% | 85 |
| MJ6 | 8 43% | 3 18% | 128 |
| X01 | 17 69% | 16 53% | 682 |
| 1011 | 15 65% | 21 45% | 895 |
| 9002W | 22 78% | 37 55% | 1 578 |
| 9003W-S | 23 80% | 39 42% | 1 663 |
| X03 | 19 73% | 65 55% | 2 772 |
| 9005W-S | 25 82% | 109 59% | 4 648 |
| X07 | 20 75% | 146 55% | 6 225 |
| 710 L | 19 73% | 147 40% | 6 268 |
| 712 L | 20 89% | 246 52% | 10 489 |
| 9015W | 29 87% | 308 57% | 13 133 |
| 715 L | 20 75% | 287 48% | 12 238 |
| X20 | 22 78% | 420 57% | 17 909 |
| X30 | 23 80% | 634 55% | 27 034 |
| 795 L | 16 67% | 827 31% | 35 263 |
Example Open pipe Ø 6 mm – Replaced with SILVENT 9002W
In the example below, we assume you have a Ø 6 mm open pipe, the compressed air costs 4,1 pence (GBP) per Nm3, and that you have a blowing time of 4 hours per day.
Blowing time per year:
52 weeks x 5 days x X hours/day
52 weeks x 5 days x 4 hours/day = 1040 hours/year
Saved Nm3 per year:
Air savings Nm3/h x blowing time
37 Nm3/h x 1040 h = 38 480 Nm3/year
Saved GBP per year:
Air savings Nm3/h x compressed air cost x blowing time
37 Nm3/h x 0,041 (GBP) x 1040 h = 1 577,68 ~ 1 578 GBP/ year
Sound level reduction dB(A):
Sound level open pipe – sound level air nozzle
102 dB(A) – 80 dB(A) = 22 dB(A) sound level reduction
Please contact one of our representatives if you want help calculating your sound level reduction and energy savings, when replacing an open pipe. Our representatives have extensive experience and expertise in the subject.