ACS Gas Essentials - Pipe Sizing Pt2 Simple Installation
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- Опубликовано: 31 окт 2021
- This video uses the Viper Book pipe sizing technique. There are others but this is an easy way to arrive at an accurate result. You will be expected to carry out this exercise in both your written and practical examination.
That was starting to become clear with putting the tings in a table. But I'm using a LCL book so it's calculated a different way. Damn! Thank you.
Your a legend. Defo leaving a legacy with these videos
Thanks Raphael. It’s great to hear that I’m helping. I’d you want anything then please let me know and I’ll make a video for you. Cheers 🙏
This is my first time I see pipe sizing taught like that. It is nice to see that there's a way to get the correct pipe size without having to guess and then go to the next size up should it not be big enough. However I was trying to understand how can you say that the 2 elbow are worth 0.5 m each in lenght if you don't know yet what size elbow you need as the equivalent lenght of fitting varies depending on the size of it and there are charts for that. Thank you very much for the explanation advance
Hi Antonio, sorry this is late but been busy with my day job!😀
The 0.5 has been agreed by the scientists who work all this stuff out. Now, there is a very complex mathematical formula for calculating the EXACT resistance and equivalent lengths but it is long, difficult and requires a deep knowledge of fluid dynamics, which itself is one of the most complex mathematical concepts. The 0.5 allows for variances and pipe diameter, internal frictions of the metal used, viscosity of the gas and ambient temperatures among a great many other factors. Pipe sizing doesn’t need to be that exact. There are only a few pipe sizes so not a lot of accuracy is needed. Bottom line is that the experts tell us to use 0.5 so that’s what we do.
I hope that helped. Thanks for the question.
As an aside..it’s really useful to know how to do this. If you are pricing a job and calculate that you can use 15mm in a run where a competitor is simply running 22mm everywhere, your quote will be cheaper and you’ll get the job. It’s worked for me well over the years.
What of the Gas splits. What would the equivalent lenght of pipework of a tee entering or leaving the fitting? How much would you time it for?
Hi Antonio, I don’t understand your question. Could you put it in a simpler way? Cheers
Does a pipe bend equate to a turn?
Hi, thanks for the question. Pipe bends of 90 degrees count as an additional 0.3 meter (instead of the 0.5 for elbows) … I hope that helps.
@@passyourgas legend, thanks mate