Ventilation Design

The Air is Clean

Grydale has extensive experience in tunnel ventilation design. Our engineering team are able to prepare a comprehensive design to control air quality in accordance with regulations and site requirements.

Air flow, control of dust and diesel particulates contamination, power consumption and noise abatement are all key areas that are taken into consideration along with being able to make recommendations for in-tunnel environmental monitoring systems.

  • Prepare a high-level comparison of ventilation options, providing advantages and disadvantages of each approach.
  • Recommend and present the most favourable ventilation option.
  • Collect data to prepare a systems level specification and concept design.
  • Undertake detailed design for each phase of construction, prepare and present a design documentation pack.

We use a range of numerical simulation tools to prepare the design, including:

– Ventsimâ„¢ DESIGN 5 for ventilation design and simulation.
– Autodesk CFD for three-dimensional ventilation design and simulation
– Autodesk Inventor for mechanical/structural design, if required.
– Verification by model review, structural simulation, or hand calculations as appropriate.

For the duration of the works, Grydale are able to provide project management and engineering support for the ventilation works and provide updated plans if site conditions or requirements change.

Grydale manufacture a range of mobile dust collectors with air volumes from 10m3/s to 60m3/s.

The Grydale JMS M-Series of Dust Collectors are developing a reputation for being the most efficient dust collection units in the world. Transforming traditional approaches to dust extraction by providing collection at source and also providing an effective general ventilation solution.

Grydale focuses on adding value through a total service offering, supported by our in-house engineering team to ensure the right solution is provided to meet workplace health and safety regulations and application needs.

JMS 10 M-Series Dust Collector

JMS 10 M-Series

A complete dust collection system, featuring a 37kW Centrifugal Exhaust Fan mounted on a single compact base to create 10m3/s @-3kPa.

Mobility Options: Drag Skid
Power Options: Diesel or 415V /1000V Electric

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JMS 20 M-Series Dust Collectors

JMS 20 M-Series

A complete dust collection system, featuring a 90kW Centrifugal Exhaust Fan mounted on a single compact base to create 20m3/s @-3kPa.

Mobility Options: Tracks / Drag Skid
Power Options: Diesel or 415V /1000V Electric

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JMS 30 M-Series Mobile Dust Collector

JMS 30 M-Series

A complete dust collection system, featuring a 120kW Centrifugal Exhaust Fan mounted on a single compact base to create 30m3s@-3kPa.

Mobility Options: Tracks / Drag Skid
Power Options: Diesel or 415V /1000V Electric

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JMS 40 M-Series Mobile Dust Collector

JMS 40 M-Series

A complete dust collection system, featuring a 250kW Centrifugal Exhaust Fan mounted on a single compact base to create 40m3/s @-4kPa.

Mobility Options: Tracks / Hydraulic Stepping System / Drag Skid
Power Options: Diesel or 415V /1000V Electric

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JMS 50 MDT Mobile Diesel Track Dust Collector

JMS 50 M-Series

A complete dust collection system, featuring a 250kW Centrifugal Exhaust Fan mounted on a single compact base to create 50m3/s @-3.5kPa.

Mobility Options: Tracks / Hydraulic Stepping System / Drag Skid
Power Options: Diesel or 415V /1000V Electric

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JMS 60 Dust Collector

JMS 60 M-Series

A complete dust collection system, featuring a 315kW / 400kW Centrifugal Exhaust Fan mounted on a single compact base to create 60m3/s @-3.5kPa / -5kPa.

Mobility Options: Drag Skid
Power Options: 415V /1000V Electric

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Key Features of Grydale JMS M-Series Mobile Dust Collectors

Dust Collector Key Components

Illustration shows JMS-50-MHT – Mobile Hybrid Dust Collector

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How do Grydale Mobile Dust Collectors Work?

Airflow diagram for the JMS- M-Series mobile dust collector range.
  1. Air is pulled through the dirty air intake by the Centrifugal Fan.

  2. Larger dust particles drop through the Drop Out Box and are separated from the air stream.

  3. Dust and fumes are trapped on the filters forming a cake on the surface as air passes through the filter house.

  4. Reverse pulse filter cleaning system cleans the filters.

  5. Dust particles are discharged from the machine via the augers and rotary valves.

  6. The velocity probe monitors air speed and then turns the centrifugal fan up / down to maintain air volume.

  7. Clean air exhausts from the machine with a filtration efficiency of 99.99% at 0.067 micron.

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