Full analysis of model parameters for 55kw Roots blower: a must-have guide for selection engineers**
**Key words: Interpretation of parameters for high-power models**
**1、 Comparison Table of Mainstream Models for 55kw Models**
|Manufacturer Model | Airflow (m3/min) | Pressure (kPa) | Speed (rpm) | Noise (dB)|
|----------------|--------------|-----------|-----------|----------|
|Changsheng CSR-250 | 45-80 | 58.8 | 1450 | 82 ± 3|
|Changsheng CSR-200 | 38-75 | 98 | 980 | 85 ± 2|
|Changsheng CSR-180 | 50-95 | 49 | 1750 | 79 ± 1|
**Special design differences * *:
-The model adopts dual oil tank lubrication (increasing bearing life by 30)
-Houghton models come standard with variable frequency motors (energy-saving 15-25)
**2、 The Golden Rule of Selection**
1. * * Airflow Calculation * *:
```math
Q = \frac{V \times N}{1000}
```
V=effective volume (L/rev), N=rotational speed (rpm)
*Example *: -200 At 980rpm, V=38.7L/rev → Q ≈ 38m3/min
2. * * Power verification * *:
```math
P = \frac{Q \times \Delta P}{6120 \times \eta}
```
η=mechanical efficiency (0.85 for the three leaf type)
**3、 Application scenario matching**
-* * Cement transportation * *: Choose high-pressure type (≥ 78.4kPa) such as -200
-Wastewater treatment: Choose high flow type (≥ 60m3/min) such as -250
---
**2. Encyclopedia of Roots blower specifications and parameters: in-depth interpretation from labels to performance curves**
**Keyword core: parameter systematization cognition**
**1、 Parameter classification and correlation**
1. * * Core Four Elements * *:
-Airflow: determines the system's processing capacity
-Pressure: affects pipeline design
-Power: directly related to electricity consumption cost
-Speed: strongly related to noise/lifespan
2. * * Hidden Parameters * *:
-Volume efficiency: High quality models>85
-Vibration value: should be less than 4.5mm/s (GB/T 1236 standard)
**2、 Performance curve analysis**
! [Roots blower PQ curve]（ https://via.placeholder.com/400x200text=PQ +Curve+Example)
-Flat characteristic: When the pressure is between 49-98kPa, the fluctuation of air volume is less than 5
-* * Forbidden area * *: Avoid running on the right side of pressure points (prone to overload)
**3、 Standard comparison**
|Parameter Items | China GB | DIN | US AMCA|
|--------------|-------------|-------------|-------------|
|Airflow Test | GB/T 1236 | DIN 24163 | AMCA 210|
|Noise limit | ≤ 90dB (A) | ≤ 85dB (A) | ≤ 88dB (A)|
