LW-9185-1500 Air Flow Rate and Pressure Measurement Apparatus
LW-9185-1500 wind tunnel is a tool for fan performance rating. This machine is applicable to resistance and thermal test of systems, modules and components. Providing high-efficiency and user-friendly interface to help engineers develop and research better designs, manufactures and QC quality.
Experimental Items:
FANS & BLOWERS
- P-Q Curve
- Operation Point (OP)
- RPM and PWM Control
SERVER SYSTEMS
- SRC
- Pressure Drop
- Thermal Design Validation
COOLER MODULES & CIRCUIT BOARDS
- Thermal Resistance & Air Flow
- SRC
- Thermal Design Validation
Apparatus Features
- Automatic system control and data acquisition by PC
- Nozzle’s flow rate report prior to delivery is issued by Long Win and can be traced to an accredited lab for long-term traceability.
Compliant with following Standards:
- ISO 5801-2007
- AMCA 210-07
- ASHRAE 51-2007
- IEC 61591-2005
- GB/T 1236-2000
Principle
This apparatus is designed based on AMCA210-16 standard structures. The airflow rate and pressure measurement methodology:
- Fan Static Pressure Measurement:
- In Fig. 12 structure, the fan static pressure is the differential pressure between static pressure in PL7 and barometric pressure.
- In Fig. 15 structure, the fan static pressure is the differential pressure between total pressure in PL8 and barometric pressure.
- Flow Rate Measurement:
- By Bernoulli equation, the velocity in nozzle is calculated from the air density and differential pressure between PL5 and PL6.
Nozzles and Airflow Rate Range
| Mode | Nozzle Diameter mm | Minimum Airflow Rate CFM | Maximum Airflow Rate CFM |
|---|---|---|---|
| 1 | 10 | 4.0 | 7.4 |
| 2 | 16 | 5.8 | 18.9 |
| 3 | 26 | 15.4 | 49.8 |
| 4 | 42 | 40.1 | 130 |
| 5 | 66 | 99 | 321 |
| 6 | 2*66 | 198 | 642 |
| 7 | All Nozzle | 560 | 1500 |
Finding Airflow Rate (Q):
Specifications
The wind tunnel has 2-in-1 AMCA 210-07 structures including:
- 6 sets of stainless steel settling devices
- 9 nozzles made of aluminum alloy
- 2 auxiliary axial blowers for supplying airflow
Flow Rate Range: 4 CFM ~ 1500 CFM,
INFS: Indicated Nozzle Full Scale
The maximum airflow rate (1500 CFM) can reach 0 mmAq.
Accuracy
| 10 mm nozzle | 4.7 ~ 7.4 CFM | 3.5% INFS |
| 16 mm nozzle | 5.8 ~ 18.9 CFM | 3% INFS |
| 26 mm nozzle | 15.4 ~ 49.8CFM | 2.5% INFS |
| 42 mm nozzle | 40.1 ~130 CFM | 2% INFS |
| 66 mm nozzle | 99 ~ 321 CFM | 2% INFS |
| 2 x 66 mm nozzle | 198 ~ 642 CFM | 2% INFS |
| All nozzles | 560 ~ 1500 CFM | 2% INFS |
Static Pressure: 0 ~ 150 mmAq
Measurement Meters: with SGS Calibration Reports
- Temperature: 0°C ~ 50°C; Accuracy ±0.5°C; Reading 0.1 °C
- Pressure Transducers’ Accuracy: ±0.25%
- The pipes for static pressure measurement are made of stainless steel
- 4 Sets of Different Pressure Transducers:
- Static Pressure Fan P1: Range 0 ~ 12.7 mmAq
- Static Pressure Fan P2: Range 0 ~ 63.5 mmAq
- Static Pressure Fan P3: Range 0 ~ 254 mmAq
- Differential pressure of two sides of nozzles P56 (Dp): Range 0 ~ 127 mmAq
- Atmosphere Pressure: one set of atmosphere pressure transducer, Range 450 ~ 825 mm Hg. Accuracy ±0.25%
- DC Fan Voltage, Current, RPM Measurement:
- Voltage: Accuracy ±0.5%, Range 0 ~ 100 V with 1 set digit display and RS485 interface
- Current: Accuracy ±0.5%, Range 0 ~ 10 A with 1 digit display and RS485 interface
- RPM: Accuracy ±1%, Range 100 ~ 99999 rpm, with a set of laser tachometer and digit display with RS-485 interface and can be switched with FG signal
- Environment:
- Ambient Temperature 4 ~ 40°C
- Relative Humidity: <65% RH
- Room Temperature: Avoid Direct Sunlight
- Noise Reduction:
- Max. noise is around 110 Db without a noise reduction device
- Max. noise is around 85 dB with noise reduction device on both sides of the auxiliary fan
- Total length increases by 3 m and width increases by 2 m with noise reduction devices
- Overall Dimension:
- Overall Dimension: 1.8 (W) x 5.6 (L) x 1.9 (H) m (Ref.)
- Chamber Cross Dimension: 0.96 (W) x 0.96 (H) m
- Main Structure: 1.8 (W) x 3.0 (L) x 1.9 (H) m (Ref.)
- Minimum Operation Space Required: 2.8 (W) x 9 (L) x 2.2 (H) m
- Net Weight: 1300 kg (Ref.)
- Movable Platform, 2 Sets: 1.2 (W) x 1.0 (L) x 0.73 (H) m
Cylinders that control sealing covers for nozzles. Sealing covers are made of silicone rubber, which is good for sealing for longer periods.