Minimising noise is an important part of LEV design. The easiest way to achieve minimal noise, is by designing to encourage laminar flow. i.e. No bends directly before and after a fanset, no sharp tapers and use angled branch joints …
Radigan Engineering have a free to download excel spreadsheet. Taken from their website: When in the course of human events it becomes necessary to calculate the Darcy-Weisbach friction factor… engineer’s often throw up their hands, go back to their old …
Glutton for punishment? Then you will enjoy our Manual calculation sheet! This is for calculating pressure losses for the P602 course and comes with notes to aid the practice of these calculations. We all rely on programs to calculate losses …
This is a glossary of basic LEV terms: ACoP – Approved code of practice. This carries greater legal weight in Great Britain courts than guidance. Aerodynamic diameter – The diameter of a unit-density sphere that has the same settling velocity in air as …
This document has several basic formulas and exercises for you to try out if you want to brush up on your maths skills for LEV. May also help those who are looking to pursue P601 & P602. BASIC MATHS HOMEWORK
If you have worked through Module 1 – then this one is just a little bit more challenging. This Module looks at the Fan Laws. these are empirical, in that they are best considered ‘approximations’ to the real world but …
For Captor Hoods – Fletcher’s Nomogram chart for manual calculations of Hood Entry Velocity required to achieve a nominated minimum Captor Velocity at a chosen distance out from the hood (Captor Distance). All units must be in metric Select hood …
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