THW Type Roots Air Blower Supplier in Bangladesh
Trundean THW type Roots air blowers from Taiwan for higher-pressure aeration and conveying: pressure up to 10000 mmAq and motors from 15 to 300 HP, with installation and after-sales support from Techno Bangla Creation.
What Is a THW Type Roots Air Blower?
A THW type Roots air blower is a positive-displacement rotary lobe blower from the Trundean range, listed for pressure up to 10000 mmAq and motors from 15 to 300 HP. Two synchronized rotors move a fixed volume of air on every revolution. It supplies air for aeration, aquaculture and pneumatic conveying.
Compared with our TH type Roots blower (0 to 6000 mmAq), the THW lists a higher pressure ceiling and starts at larger motor sizes. See the full Roots air blower range.
- Pressure up to 10000 mmAq (about 98 kPa)
- Motor 15 to 300 HP (about 11 to 224 kW)
- 380 to 440 V, 3 phase, 50 Hz supply
- Installation and after-sales support in Bangladesh
THW Type Specifications
- Type
- THW type Roots (positive-displacement rotary lobe) air blower
- Model range
- TH 80 ~ TH 300 A
- Pressure
- 0 ~ 10000 mmAq (about 0 ~ 98 kPa)
- Motor power
- 15 ~ 300 HP (about 11 ~ 224 kW)
- Power supply
- 380 ~ 440 V AC, 3 phase, 50 Hz
- Application
- ETP, WTP, Aquaculture (Fisheries, Biofloc), Flour, Paper and Cement industry
- Brand
- Trundean
- Origin
- Taiwan
Airflow depends on the model and the pressure you run at. Send us your duty point and our engineers will confirm the right THW model and motor.
How a High-Pressure Roots Blower Works
- Air IntakeAir is drawn in through the intake filter and silencer.
- Rotors Trap AirTwo synchronized rotors turn in opposite directions and trap a fixed volume of air.
- Air Is CarriedThe trapped pockets of air travel around the casing to the outlet.
- Pressure Builds at DischargeAir is compressed when each pocket opens to the higher-pressure outlet line.
- Safe DeliveryA relief valve and silencer protect the system. Piping carries air to diffusers or a conveying line.
Key Benefits
- Pressure up to 10000 mmAq (about 98 kPa) for deep tanks and long pipelines
- Larger motor sizes, 15 to 300 HP, for big air demand
- Steady airflow that stays almost constant as back pressure changes
- Oil-free air path, typical of rotary lobe designs
- Simple, proven design in use for over 150 years
- Runs on Bangladesh grid power, 380 to 440 V, 3 phase, 50 Hz, with local support
Where THW Type Roots Blowers Are Used
Effluent Treatment Plant
Supplies air to deep biological tanks where the diffusers sit under several metres of water.
Water Treatment Plant
Provides air for aeration and air scouring in water treatment and filtration stages.
Aquaculture and Biofloc
Keeps dissolved oxygen up in deep ponds and biofloc tanks with a continuous air supply.
Flour Industry
Roots blowers are a common air source for pneumatic conveying of powders and grains.
Paper Industry
Delivers process air and conveying duty where a steady, oil-free air supply is needed.
Cement Industry
Used for conveying and aeration of bulk cement and fine materials in silos and lines.
Is a THW Type Roots Blower Right for You?
Choose the THW Type When
- Your total system pressure is above what the TH type can cover
- Diffusers sit under deep water or the pipeline is long
- You run pneumatic conveying at higher pressure
- You need a large motor, 15 HP or more
- Flow and back pressure change during the day
Look at Other Options When
- Pressure is modest, so the TH type may be enough
- Aeration runs continuously and power cost is high: compare a turbo blower
- Very high pressure with long running hours: ask us about a screw blower
How to Choose the Right THW Model
Share these details with our engineers and we will recommend a suitable model and motor.
- Airflow and pressure. Add about 1000 mmAq per metre of water above the diffusers, plus pipe and diffuser losses. Keep a margin below the 10000 mmAq rating.
- Site air temperature. Hotter inlet air lowers the allowable temperature rise and the output. Ventilate the blower room and ask for performance at your real inlet temperature.
- Safety. Fit a pressure relief valve near the discharge so the blower cannot exceed its rated differential pressure.
- Noise. A Roots blower pulses with every pocket of air. Specify silencers and an acoustic enclosure if people work nearby.
- Power and control. 380 to 440 V, 3 phase, 50 Hz. Add a VFD if airflow must follow a changing load.
Frequently Asked Questions
What is a Trundean THW roots blower, and what makes it different?
It is the water-cooled series in Trundean’s Roots range. Water surrounds the air chamber, which helps the blower tolerate more heat at high pressure, and it is listed up to 10000 mmAq and 300 HP.
What is the difference between the TH type and the THW type?
On our listings, the TH type covers 0 to 6000 mmAq with 1 to 300 HP motors, while the THW type covers 0 to 10000 mmAq with 15 to 300 HP motors. The THW is therefore the higher-pressure, larger-motor option. Both use 380 to 440 V, 3 phase, 50 Hz power.
What pressure, power and supply does the THW type need?
The THW type is listed for 0 to 10000 mmAq (about 98 kPa) of pressure and 15 to 300 HP (about 11 to 224 kW) of motor power. It runs on 380 to 440 V AC, 3 phase, 50 Hz supply. Airflow depends on the model and pressure, so we confirm it from your duty point.
When do I need a high-pressure Roots blower?
You need higher pressure when the air must overcome deep water, long pipelines or dense conveying loads. As a rule of thumb, every metre of water above the diffusers needs about 1000 mmAq, plus pipe and diffuser losses. If your total stays well below 6000 mmAq, the TH type may be enough.
Does higher pressure reduce blower efficiency?
Yes. In a Roots blower, more air leaks back from outlet to inlet as discharge pressure rises, and the discharge air gets hotter. This raises power use and limits the maximum differential pressure. Correct sizing and a blower rated with margin for your duty keep both within safe limits.
Is a THW blower suitable for hot climates like Bangladesh?
It can be, if sized for site conditions. Manufacturers reduce the allowable temperature rise when inlet air is hotter than normal, so a warm blower room lowers the safe working range. Ventilate the room, fit a pressure relief valve and ask us to check performance at your real inlet temperature.
Can a THW blower be used for aquaculture or pneumatic conveying?
Yes. The THW type is listed for aquaculture, including fisheries and biofloc, and for flour, paper and cement industries. Deep tanks and conveying lines need higher pressure, which is where this range helps. Share your tank depth or line length so we can size it.
How can I get a quotation and after-sales support?
Send your required airflow, pressure and application to our engineers by phone or email. We reply with a free quotation, and Techno Bangla Creation provides installation, commissioning and after-sales support for treatment plant equipment across Bangladesh.
