Fan Shroud Air Intake Filter Screen Stops Dust Blowing

Fan Shroud Air Filter Stops Dust Blowing

The Challenge - Recirculating Dust with Cooling Fan

Processing plant items manufactured with heat require high velocity air cooling from recirculating fans blowing directly onto the product before it can be packaged.  

Unfortunately the mobile and pedestal style air circulator fan components become covered in airborne debris as the equipment draws in the local air, picking up the particles which are then spread throughout the motor, blades and fan guards. 

These contaminants can, potentially, be blown back into the cooling area and onto the finished product.

 

The Solution - Fan Shroud Air Filter

Custom sized to fit securely on the backside of a fan guard, the filter wraps around the motor encasement and is held securely in place with an elastic edge and hook/loop attachment.  

Available in a washable woven electrostatic polypropylene media or disposable nonwoven polyester, the fan shroud attracts and holds the particles before they can enter the equipment. 

Easily removed, the washable filters can be changed out with a second set of filters as needed, rinsed and reused.  

The disposable polyester fan shrouds can be removed and disposed of depending on which model best meets the factory needs.  

Both the equipment and the product stay clean.

Inspection guidelines will include that Dust Collection & Filtering Devices be put in place to prevent possible contamination to food products from threads, lint and fibres.  

In GENERAL RULES FOR ALL FOOD PREMISES & FOODSTUFFS - the layout, design, construction, siting and size of food premises are to:

1. Permit adequate maintenance, cleaning and/or disinfection, avoid or minimise air borne contamination, and provide adequate working space to allow for the hygienic performance of all operations.
2. Be such as to protect against the accumulation of dirt, contact with toxic materials, the shedding of particles into food and the formation of condensation or undesirable mould on surfaces.

PreVent® Equipment Protection bonnet filters are one positive solution to this problem. For details please see Bonnet Filters

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Air intake filter screens can be easily fitted to GeoClima chillers and will massively reduce coil fin clogging. For more information see www.airintakescreen.co.uk  or email richard@rabse.com

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 Supplying air intake filter screens for the Uk and Europe. Look out for thePreVent logo.

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It pays to screen - protecting cooling towers

Air Intake Screens: An air intake screen solution

Air Intake Screens: An air intake screen solution: An air intake filter screen is a simple solution to PreVent® airborne debris contaminating HVAC equipment. A specification by one of the RAB...

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News of air intake filter screens

Fresh air supply to London’s Heathrow Airport

Fresh air intake supply to London’s Heathrow Airport

London’s Heathrow Airport started out life as a small 150 acre plot purchased from the Vicar of Harmondsworth.

“Heathrow Before World War II Map”. Licensed under Creative Commons Attribution-Share Alike 2.5 via Wikimedia Commons –

It now employs 76,000 people within its boundary (equivalent to the population of Guildford) and is sat on 1,227 hectares.

That is 20 times its original size with five terminal buildings covering the land previously occupied by the hamlet of Heathrow, Heathrow House and various farms, orchards and market gardens. It is still defined by its 1950’s hexagram shape and now operates as one of the busiest airports in the world.
The terminal buildings cover 686,064m² and process more than 191,000 passengers on an average of 1,200 flights per day.
In a recent article written by Cordis the author states that up to 50% of the total energy in a typical airport will be spent on HVAC to maintain a suitable environment for passengers and staff.

CASCADE: REDUCING ENERGY USE BY AIRPORTS
Airports are big energy consumers – and that’s before a plane takes off or lands. The daily electricity and thermal energy used by a large airport compares to that of a city of 100,000 people.
This article goes on to quote
“A pilot scheme has been undertaken by two Italian airports, Fiumicino in Rome and Malpensa in Milan, used by 55 million people a year.
The project engineers concentrated on the large air conditioning units, chiller plants and cooling towers at the airports. They found equipment running when it was not needed, incorrect heating and cooling settings, poor positioning of sensors and poor maintenance”.

Heathrow Airport consumes a massive 701GWh per annum which is almost 4 x the annual production of the Glendoe Hydro Scheme. However, HAL do generate a lot of their own energy through various renewable schemes and are continuing to advance that technology in the new Terminal 2.

Terminal 5 is the largest free-standing structure in the UK and the roof area is the size of five football pitches.  It requires a massive 2,500,000m³/hr of air to serve its energy-efficient displacement air-conditioning system.

The air is filtered through three 11m² banks which contain a total of 726 filters.

Even at a highly efficient 15 watts per m³ that will be costing over £4,000.00 per hour or £30 million per year (figures are an estimate only) for this air supply only.

That is why efficient air movement is so critical because face loading on filtration systems will increase the energy demand exponentially.

Although the airport itself contains almost no flora and fauna it is surrounded by open spaces and gardens which create the leaf, seed and pollen debris that is blown across its 1,227 hectares. Add to that tyre rubber from 1,200 flights per day, dust kicked up from the runways and local roads and you can see that the filters have a hard job to do.

New Permatron PreVent® air intake screens are to be installed to protect the existing filter bank and the coil fins on the frontline frost coil.

The added benefit (currently under test) is that the changeover periods for the existing filter bank will be extended by a new washable filter with only a minimal effect on airflow.
Notes:

• CORDIS is the Community Research and Development Information Service
• Click here for the full article by CORDIS
• For more information regarding air intake screens go to www.airintakescreen.co.uk
• Richard Betts is the Managing Director of RAB Specialist Engineers who are the sole UK and European distributor of Permatron Air Intake Filter Screens.

Cottonwood seed and air intake filter screens

 

  Telephone 01635 248633 or email sales@rabse.com

Cottonwood seed and air intake filter screens

Energy loss versus energy efficiency

In the USA the term Cottonwood Tree is commonly known and most people have had some experience of the windblown seeds creating a summer snow. 

What is less well known, is that the poplar species spawns its seed from catkins. This creates a "snowstorm" of fluffy white seedlings which can completely carpet the local area. For images of this seemingly delightful natural occurrence please check see http://goo.gl/7zh3TD .

Like all snows, this seed is great when it first arrives, until you realise just how much it is interfering with your life.

It gets everywhere! 

Because it is windblown, it has no respect for boundaries and can be found on the street, the roof and even in the basement. It is not that difficult to get rid of and can be easily removed with a hose. brush or vacuum.

Unless it gets sucked into your air intake plant.  

• Once it hits the cooling coils it will begin to reduce energy efficiency by forming a thermal blanket over the coil face.
• In cooling towers it enters the fill, decays and creates a biological sludge to feed bacteria.
• And finally, it is sucked into all AHU filters to reduce airflow and changeover times.

Cottonwood seed is one of nature’s marvels and looks great in the right place. Not so good when it is costing you time, energy and money.  

There is a simple and innovative solution.

Instead of drawing all of the cottonwood seed into your air movement plant, allow it to be captured by a Permatron PreVent® air intake filter screen supplied by RAB Specialist Engineers Limited. 

This unique product can be fitted to any size or shape of air intake and provides an external, electrostatic filter with minimal effect on airflow.   

Now, when you want to clean your coils, you just use a hose, brush or vacuum

It will extend filter life by up to 60% and reduce maintenance time on your cooling towers.  

For more information contact on 01635 248633 or drop an email to sales@rabse.com