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 college textbooks, and say “about .02!” [Which normally isn’t off by more than a factor…
Categorised:LEV Design, P602 Training Material
Tagged:Calculation, duct, Friction Factor, LEV, LEV Design, Moody
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 for us these days but you have to know this for your exam. Happy practising!…
Categorised:P601 Training Material, P602 Training Material, Training/Presentation
Tagged:BOHS, Calculation, manual, P602
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 the particle in question. Air cleaner – A device also known as filtration unit which removes…
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
This is a ‘cheat sheet’ with the basic LEV Mathematical terms found in LEV. This references both imperial and metric terms. LEV Mathematical Terms
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 they do give you a clear picture of what will happen, for example, to the…
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 dimensions and calculate Aspect Ration (small dimension divided by large) Mark Aspect Ration on right…