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How To Calculate The Required Louvre Size

Acoustic Louvres are designed and built to reduce noise levels at source and help meet specific noise reduction requirements within and without the building, whilst still providing ventilation.

When looking to either install or have one implemented within a prupose built enclosure, working out the size of the louvre you will need is of great importance. Too small and ventilation suffers, too big a you run the risk of running out of wall space or allowing more noise out than first intended. So, knowing how to accurately calculate the required louvre size is a great first step:

Calculating Louvre Sizing

“How many square metres of Louvre do I need for my building?”

The answer is based on quite a complex formula. 

So, here are some questions you’ll need the answers to:

  • What’s the pressure drop? – the pressure differential from one side of a louvre to the opposite side, often expressed in Pascals (Pa).
  • What air density are we working with? – Quite often we work with 1.225kg/m³ which is at sea level and at 15°C
  • What’s the volumetric flow rate? – the volume of fluid which passes per unit time; usually represented by the symbol Q
  • What discharge loss co-efficient are we working with? – This figure is usually provided by a Louvre manufacturer. Once a model has been chosen, we show the discharge loss co-efficient for our models in the brochure

Once you have all the data requested about, use the formula below to calculate the louvre size you need:

Limited Space?

No matter what size enclosure or container you need for your application Bradgate Containers are certain we can give you exactly what you need. Where space is limited, Bradgate acoustic louvres provide excellent sound attenuation and good protection from the weather, even over shorter lengths.

Never worry about acoustic louvre sizings again, we’ve got it covered!