Efficient Tunnel Ventilation Fans for Safe and Clean Air :
When it comes to tunnel ventilation, having the right equipment is essential for ensuring safety and efficiency. That’s why Maya Fan is proud to offer a wide range of tunnel ventilation fans designed to meet the unique needs of tunnels of all types and sizes.
Our tunnel ventilation fans are built with cutting-edge technology and engineering practices to ensure maximum performance and reliability. Whether you need a fan for a small roadway tunnel or a large subway system, we have the expertise and experience to provide a solution that meets your requirements.
We offer a variety of fan types to suit different ventilation needs, including axial fans for simple ventilation and jet fans for high-pressure situations. Our fans can be customized to fit specific tunnel designs, including curved and angled tunnels, and can be installed in vertical or horizontal positions.
At Maya Fan, we understand the importance of energy efficiency and strive to provide fans that are both effective and cost-efficient. Our fans are designed to minimize energy consumption and operating costs while providing reliable and efficient ventilation.
In addition to our high-quality fans, we also offer a range of services to support our clients. These include installation, maintenance, and repair services, as well as technical support and training.
Our team of experts has extensive knowledge and experience in the field of tunnel ventilation, and we are committed to providing exceptional customer service. We work closely with our clients to understand their unique needs and provide tailored solutions that meet their specific requirements.
If you’re in need of a reliable and effective tunnel ventilation fan, look no further than our company. Contact us today to learn more about our products and services, and how we can help with your project.
Installation
Up to 30% power saving
mm wg Static Pressure capacity
Up to Kw Rating
Applications of Tunnel Ventilation Fans
Our tunnel ventilation fans are engineered to protect people and infrastructure wherever confined air becomes a safety concern. Here’s how they’re used across different industries:
Road and Highway Tunnels
In long road tunnels (typically over 300 m), our fans ensure clean, breathable air by removing vehicle exhaust like carbon monoxide, nitrogen oxides, and particulate matter. They meet international safety standards and are essential when traffic exceeds 2,000 vehicles per hour per lane.
Underground Construction and Mining
Our robust ventilation systems supply fresh air to workers underground while extracting dust, gas, and fumes. Built with corrosion-resistant FRP, these systems stand up to harsh conditions and can reduce energy use by up to 35% versus conventional metal fans.
Emergency Smoke Extraction
When fires strike, our reversible ventilation fans switch directions instantly to extract smoke and keep evacuation routes clear. The FRP blades are high-temperature resistant—helping responders access the tunnel safely.
Railway Tunnels
Rail tunnels use fans to:
Clear diesel exhaust (like in the Moffat and Mount Macdonald Tunnels), helping cut downtime between train passages.
Control airflow and pressure (as in the Channel Tunnel), using fans that both inject fresh air or extract smoke and fumes.
Supplement the airflow pushed by trains (the “piston effect”) especially during peak loads or emergencies using jet or axial fans for effective ventilation and smoke control.
Metro, Service, Cable, and Other Tunnels
Our ventilation solutions extend to a variety of tunnels—metro, service, or cable—where they:
Dilute harmful gases
Reduce heat buildup
Keep escape paths safe during emergencies
Systems include options like transverse, longitudinal, or semi-transverse ventilation, depending on tunnel type and design constraints.
Types of Tunnel ventilation fans
Ventilation airflow systems are a critical component of tunnels, helping to keep the air clean, cool, and safe for both workers and travellers. In this article, we’ll explore some of the most common types of ventilation airflow systems in tunnels, and what makes each one unique.
Longitudinal
Longitudinal Ventilation System
How it works: Air is moved along the length of the tunnel using jet or axial fans mounted on the ceiling or walls.
Where it’s used: Common in short to medium-length road tunnels and smaller rail tunnels.
Advantages: Simple design, cost-effective, and easy to maintain.
“Longitudinal systems use high-performance fans to keep air moving straight through the tunnel, pushing out exhaust gases and bringing in fresh air. It’s the most economical and widely adopted solution for road tunnels and short railway projects.”
Transverse
Transverse Ventilation System
How it works: Separate ducts run along the tunnel to supply fresh air and remove exhaust air at multiple points.
Where it’s used: Longer tunnels, high-traffic areas, or projects with strict air quality requirements.
Advantages: Provides uniform air quality throughout the tunnel; ideal for large traffic volumes and longer travel times.
“Transverse systems are more advanced, using ducts to constantly feed fresh air and extract exhaust across the entire tunnel. This ensures even airflow and cleaner conditions, making it the go-to choice for long tunnels and heavy traffic corridors.”
Semi-Transverse
Semi-Transverse Ventilation System
How it works: A hybrid method where either fresh air is supplied through ducts and exhausted longitudinally, or vice versa.
Where it’s used: Medium to long tunnels where better airflow control is needed without the full complexity of a transverse system.
Advantages: Balanced performance and cost; more control over airflow in critical sections.
“Semi-transverse systems combine the best of both worlds. They use ducts for either supply or exhaust while letting the rest of the airflow move naturally along the tunnel. This approach offers more control than a simple longitudinal system but with lower cost and complexity than full transverse designs.”
MAYA FAN STRENGHT
CREATIVE IDEAS
AT Maya Fans we always remain creative to deal with the challenges in the field of tailor-made tunnel fans, so far we have developed fan for up to 500 mm static pressure that to in single-stage fan.
EXCELLENT FEATURES
We are the pioneer to introduce FRP corrosion-resistant fan in this critical application and installed more than 600 fans including all types of underground tunnel ventilation fans.
FULLY RESPONSIVE
AT Maya Fan We never force-fit our standard existing fans, but remain responsive to input design data and develop new products as and when it required.
TUNNEL VENTILATION FAN DEVELOPMENT PROCESS
Every tunnel is different and having requirement of a customised fan so we do not Force customer to compromise with the standard available product and remain open for new development, this customised fans development process steps are as below –
FAN DATA COLLECTION
It is must-have accurate data (Fan duty point) for fan development so we do collect data on the field with our technical expertise and high-tech equipment.
FAN DESIGN
We analyze collected data and conclude for a specific design point as well as keep a range of operations in mind while developing a new fan.
VALIDATION
It is must validate each of the design outcomes to decide for the best solution, and we have full modeling and testing facility in the house.
PRODUCTION
Once the final fan design concluded, it is handed over to the production team for the preparation of tooling. To final launch this product
Tunnel ventilation Fans Key Feature
High Efficient fan impeller.
Low Operating Costs.
Low Operating Noise.
Long Life Construction.
Performance for All Seasons.
Low and cost effective Maintenance.
Zero Downtime with Maya mining fan.
Fast emergency response.
Why choose Maya Tunnel fan?
Low Operating Costs
- Maya High efficient airfoil blade design
- optimization of twist cord and cross-section provide maximum efficiency.
- The involvement of the most advanced composite material reduces turbulence and produces smooth linear airflow.
- Optimum design for the duty point No oversizing of the fan.
Long Life Construction
- Most of the part made of Heavy-duty composite and hot-dip galvanized material which meets the corrosion resistance and equipment life requirements of your most demanding heavy industrial applications while still delivering an outstanding value.
- Lightweight impeller, therefore, increases in the life of all the mechanical components.
- Tunnel Fans are also available with Series 300 stainless steel as an optional upgrade which comes with a 5-year limited warranty.
- Maya tunnel Fans are manufactured in ISO-2015 certified facilities, attesting to our commitment to comprehensive quality processes and systems.
Fast emergency response.
- Ready-made fan available.
- The minimum stock of the fan spare is maintained.
- Low manufacturing time because of zero outsourcing.
- An expert team available for fan installation.
Quiet by Design
- the composite blade has a glossy surface finish that offers smooth airflow.
- low tip speed design (Nose are directly proportioned to tip speed).
- No outsourcing full quality control thus achieves minimum tip clearance.
- Special design available for extra low noise fan which can reduce noise up to 10 dba compares to conventional fans.
Performance for All Seasons
The fan is a constant flow machine and to maintain its performance despite critical variation in weather Maya tunnel ventilation fans are designed for a broad range of operations our fans are having a good amount of reserve margin for both airflow and static pressure fan performance throughout the year in all type of seasons.
Low Maintenance/Less Downtime
- Maya FRP tunnel ventilation fan is made of high-quality material and robust design.
- Maya design fan for low operating tip speed which increases overall system life and also reduces the chance of failure.
- Unlike the painted fan, we do provide a permanent coating of a gel coat which remain an integral part of the fan blade body and does not get separated due to erosion.
Maya tunnel ventilation fan construction
Here is the list of Maya tunnel fan component with a there brief detailing
Fan Blade
Maya tunnel ventilation fan blade is made of latest airfoil similar to that of airplane wing we do choose most advanced airfoil possible for the fan to provide maximum efficiency by this only we have achieved superior performance which is far ahead in the tunnel ventilation fan industries, our blade is very robust in construction and designed for 7-10 times of operating load we also provide superior wear resistance material to maintain surface stability for a long period of time which prevent efficiency deterioration. recently we have developed a special series in tunnel fans in which we are providing state of the art fans in fiber reinforce plastic we are using this superior epoxy material for the blade tip speed of up to 22000 FPM
This FRP material is having some of the very charismatic property it is very much possible to produce any complicated shape with ease thus provide economical solution some of its special features are and listed below –
- High strength at low weight.
- Good impact, fatigue, and Tensile Strength (Ultimate)
- Excellent environmental resistance.
- Excellent chemical and corrosion resistance.
- Good thermal insulation.
- Better life of the entire ventilation fan system due to low assembly weight.
- Low moment of inertia help for the selection of optimum motor and reduce over design due to higher starting torque thus motor operate under a better range of efficiency.
Fan Hub / Boss
Hub used in tunnel ventilation fans are heavy in construction in this we are using heavy thickness mild steel plate, cast iron, or Aluminum clamp and stainless steel hardware to provide long life we are coating all mild steel parts with heavy thickness of zinc.
Note – Optionally we also provide customize hub/Boss on special demand of the customer, like caste hub boss, Spider Type Fabricated hub, etc.
Taper Locking
in most of our tunnel ventilation fan hub, we preferred to have a taper locking arrangement and this is provided with several types of different locking arrangements which are proven in the field these taper lockings are mostly made of Cast iron or stainless steel.
Fairing inlet and outlet
these are inbuilt component in tunnel ventilation fan, as in tunnel fan pressure remain high and air travel at very velocity therefore even small turbulence harness unnecessary energy so it is very must to have smooth airflow throughout the fan system and well design and construed inlet-outlet fairing contribute significantly, we at Maya fan make these fairing in composite material to provide smooth finish which helps to keep laminar uninterrupted flow through the fan system.
Inlet guide van
It is used to guide inlet air in such a way that it will inter in impeller at a particular angle so that it will have minimum losses for changing the direction of air under fan impeller.
Out Let guide van
Outlet guide vane are used to guide exit air in such a way that it will remain linear to the system with minimum turbulence in it. which will prevent eddies generation and minimize friction of air with the fan casing surface.
Silencer in tunnel fan
are used to minimize fan sound to a desired acceptable level. these tunnel ventilation fan silencers are designed to match with the shape of a fan and to have minimum pressure drop in it.
Fabrication of tunnel ventilation fans
Tunnel fan is having a large component of fabrication starting from its main body to diffuser and many other parts these are required to have a good control there for it is manufactured under closed control of ISO system and are maintained as per Section IX, ASME
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