Hurricane® Plus natural ventilation

Introduction

Using the latest in Wind Tunnel technology along with sophisticated CFD computer modelling, the Hurricane® Plus ventilator is a radical departure from traditional wind ventilators. Whilst Hurricane® Plus is stationary with no moving parts, it is more efficient and effective than any rotating ventilator. With no moving parts Hurricane® Plus needs virtually no maintenance and will last a lifetime.

The regular wind patterns of the Arabian Gulf, means that the Hurricane® Plus induced ventilator effectively removes heat, humidity and fumes from a single storey building structures, such as warehouses, factories, workshops and logistics facilities throughout the long hot summer.

Hurricane® Plus boosts the performance of the natural ventilation of industrial buildings. Unlike the improbably named 'turbovent' roof ventilators, Hurricane® Plus has a patented geometry that reduces static pressure resistance whilst the large cylindrical shape increases the wind induction effect.

With no blades or bearings, Hurricane® Plus does not suffer from the failures of so called 'turbovents' or other rotary head roof ventilators.

Client List 

See our installations

Hurricane Plus in use on a Dubai project

Hurricane Plus in use on a Dubai project

Some of the suitable industries:

Mills: Paper : Steel : Aluminium : Copper
Plants: Galvanizing : Bottling : Food Processing : Packaging : Petrochemical
Workshops: Fabrication : Machine
Manufacturers: Pipes & Fittings : Cartons : Paint : Garments
Facilities: Vehicle Storage : Vehicle Maintenance
Warehouses: Chemical Storage: Logistics

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Why Ventilate?

To further evaluate the performance of the wind driven ventilators, four small light weight impellers (flow indicators) were fitted at ninety degrees around the periphery of the exhaust neck.

The flow indicators were monitored continuously during the day for a period of a week. Two major observations were made:-

  1. The wind indicators showed that the flow was not continuous but periodic
  2. That the flow was more intermittent and the stationary periods were longer with the rotating head unit, despite the fact that the head continued to rotate regardless.

From these observations we were able to deduce that the Bernoulli Effect was more powerful on the static unit than on the rotating head unit and the rotation of the head did not influence the flow through the exhaust. Plainly as the wind veered the smooth or laminar flow was detached and needed the wind to settled down before it reattached.

The wind flow attached more quickly on the smooth surface than on the rotating surface. By timing the periods of flow it was determined that the static unit created more flow by a 30 percentage more of that than the rotating head. Clearly the rotating head is not a smooth surface.

This is shown by the videos taken at the time. So why is a rotating head fitted to a ventilator if it does not contribute to the flow, creates more turbulence and uses some of the wind energy to turn the head (wasted). One obvious explanation is that it keeps the rain, dust and stray birds from entering the exhaust neck.

Over time smart and clever marketing professionals called these rotating heads “ turbovents” a word that does not exist and a physical property that is impossible to achieve.

Hurricane® Plus brings the facts to the market. By ingenious patent pending design a roof ventilator has been invented that accomplishes these desired properties without rotating by using the laws of Physics.

By excluding bearings and not having concerns over weight Hurricane® Plus can be manufactured in stronger and more thick special Aluminium alloy material for a much longer life.

Main Benefits

1. Brand new design using latest computerized technology; removing heat, humidity, dust/sand and fumes better than ANY other ventilation product.

2. Increases productivity by 15%+. Reduce absenteeism, staff turnover.

3. Reduces maintenance, lubrication and breakdowns of machinery.

4. Needs no maintenance, repair or replacement (20 year warranty).

5. Works 24/7, removing heat and humidity from buildings at night.

6. ROI: 2-4 years. Less than 1 year,If replacing/instead of electrical exhaust fans.

Comparison Table

Showing the relative costs of types of ventilation products that provide the SAME level of ventilation (air velocity) in an enclosed space in Middle East conditions (over 3-8 year period).

Product

    Number Required

    Need Maintenance

    Need Repair

    Need Replaced

    Running Costs

    Roof Need Reinforcing

Hurricane® Plus Ventilator

                1

               No

          No

            No

            No

                  No

Roof Extractor Fan

                1

              Yes

      Probably

           Yes

           Yes

              Probably

Rotating Ventilator

               3-8

              Yes

      Possibly

           Yes

            No

                  No

Flap Ventilator

               2-3

              Yes

      Possibly

        Possibly

            No

              Possibly

Design & Testing

The simplicity of the Hurricane® Plus overcomes the hazards and complications affecting the old rotating wind ventilators, and eliminates the bearing systems that are prone to failure.

The Hurricane® Plus has undergone extensive testing at the University of Adelaide Wind Tunnel at Theborton. These tests were performed in accordance with AS 4740-2000, the world’s only standard for “natural ventilation”. This standard was created by Standards Australia to ensure that the best performance was achieved from Australian natural ventilation products. The Hurricane® Plus unit exceeds all the requirements of this standard. 

It is also standard ISO 9001 Certified.

Hurricane Plus Natural Ventilator CFD Flow diagram

Hurricane Plus Natural Ventilator CFD Flow diagram

Premium Quality Engineering

With thousands of older versions of wind driven ventilators installed throughout the Gulf region, Hurricane® Plus offers greater ventilation flow rates that will save you money and significantly improve productivity. Designed in Australia and manufactured exclusively under license in the UAE to the highest tolerances, Hurricane® Plus comes with a 20 year warranty.

Manufactured from marine-grade aluminium in Dubai, Hurricane® Plus is robust, efficient and of the highest quality. Built to withstand the Middle East’s rigorous climate.

Hurricane® Plus is stationery and virtually cyclone-proof but is light and needs no additional roof reinforcement. There is no dynamic loading. It is also guaranteed 100% waterproof, no matter what weather conditions.

Hurricane® Plus requires no electricity or maintenance and will ventilate day and night, year after year.

Properties

Even at low wind speeds, the Hurricane® Plus patented configuration allows hot air to rise and be exhausted out of the roof space.

Cleverly designed to allow air to flow out, Hurricane® Plus prevents rain from entering – even in cyclonic conditions.

Ventilation RatesRecommended air changes
Light Industry 5 air changes
Heavy Industry 7.5 air changes
Heat producing areas 7.5 air changes
Harsh environments  
(acid, noxious, high heat and humidity)
10 – 25 air changes
Hurricane® Plus nominal flow rates
Wind speed 8 kph 12 kph 18 kph
Model: 1200

3470 m3/hr

4620 m3/hr

4788 m3/hr

 Based on a stack flow of 15 metres height and 15oC temperature difference.

Humidity

As well as removing heat, fumes and dust, Hurricane® Plus is excellent at lowering humidity in your premises. During the day, moisten laden air enters and accumulates in the hot stratified roof space of a building that is sealed and waterproof, and cannot let the moisture out. As it cools in the evening the temperature drops, lowering the vapour pressure and elevating the dew point. Consequently, and particularly during high humidity, water condenses on the building structure. This can mean a continuous build up of humidity during the summer months, that can cause serious damage, and is very uncomfortable to work in.

Natural ventilation works 24 hours, so as well as removing humidity in the daytime, at night Hurricane® Plus will be removing any residual humidity from during the day. At night there is usually little or no wind, and unlike rotating ventilators, the Hurricane® Plus design means it is still ventilating without the wind, and is at least 200% more efficient at removing the humidity.

Wall Inlet Louvers

It is essential that for a natural ventilation system to work properly, and continuously over the 24 hours, low level wall inlet louvers are fitted in the building. This ensures the required air changes to reduce the heat and humidity are achieved. We can manufacture, supply and install quality sand trap louvers that will let the air in, but not the sand.

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Sand trap louvers work with Hurricane Plus to ventilate effectively in sandy conditions

Sand trap louvers work with Hurricane Plus to ventilate effectively in sandy conditions