List of Roots blower parameters**
**Deep interpretation from model coding to performance indicators**
**1. General parameter table (taking mainstream models as examples)**
|Parameter Name | RC-80 | 3L22WD | -55|
|----------------|--------------|-------------|-------------|
|Power (kW) | 11 | 15 | 7.5|
|Rated air volume (m3/min) | 12 | 18.5 | 8.2|
|Pressure (kPa) | 58.8 | 78.4 | 49.0|
|Rotational speed (rpm) | 2950 | 2450 | 3550|
|Noise (dB (A)) | 82 | 85 | 78|
|Weight (kg) | 380 | 520 | 260|
**2. Special parameter analysis**
-Specific power (kW/(m3/min) * *: measures energy efficiency, with smaller values indicating greater energy savings (value ≤ 0.15);
-* * Volumetric efficiency * *: the ratio of actual air volume to theoretical air volume, industry standard ≥ 85;
-Vibration intensity: required to be ≤ 4.5 mm/s (GB/T 6075 standard).
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**Article 4: What is the air volume of a 30kw fan**
**The performance boundary of medium power equipment in industrial systems**
**1. Corresponding relationship between air volume and pressure**
|Pressure (kPa) | Calibrated air volume (m3/min) | Shaft power (kW)|
|-------------|---------------------|---------------|
| 39.2 | 42 | 25.3 |
| 58.8 | 33 | 28.7 |
| 78.4 | 24 | 31.2 |
**Note * *: The data in the table is based on the operating conditions of a volumetric efficiency of 88 and a rotational speed of 2450 rpm.
**2. Selection verification example**
A certain chemical plant requires:
-* * Gas medium * *: Chlorine gas (requiring anti-corrosion treatment)
-* * Required air volume * *: 35 m3/min @ 49 kPa
-* * Calculation verification * *:
\[
P = \frac{35 \times 49}{6120 \times 0.85} \times 1.15 ≈ 29.8 \, \text{kW}
\]
The actual choice is a 30kW stainless steel lined fan, with a stable operating current of 56A (92% of full load current).
